Okay. Your first question’s answer is D. causing the host to produce new viruses and your second question’s answer is A. prepare the immune system to recognize and destroy pathogens.
*sorry for saying C before. I haven’t done biology in a little bit.
Answer: D. causing the host cell to produce new viruses.
Explanation:
Viruses are microscopic parasitic organisms which uses the host cell to proliferate and produce their viral progeny. They are capable of infecting all types of living organisms such as plants, animals and humans. They are capable of linking the host cell machinery linked with their own genetic material along with the use of the viral enzymes and proteins which causes the lyses of host cell membrane to liberate numerous viral progenies.
Describe a plant organism who went through asexual reproduction (with spores) and how it grows up. Make sure it is in 1st person PoV
Reproduction in plants can be by vegetative propagation, through the vegetative propagules like the rhizomes or tubers, asexual reproduction by the production of spores and sexual reproduction by the formation of the male and female gametes.
Spores are the agents of asexual reproduction in plants. They are formed in the non-seed-bearing plants like the liverworts, hornworts, mosses and ferns. The ferns are the group of vascular plants that reproduce by spores. The leaves of the ferns (fronds) contain numerous sporangia which produce tiny spores. When the sporangia breaks open, the spores are released and dispersed by the wind. On encountering favourable conditions of the environment, these spores grow into tiny plants called the gametophytes.
Bardzo proszê o pomoc! Biologia,, puls ¿ycia 7." Zeszyt æwiczeñ od strony 35 do 37 pilnie! Proszê o szybk¹ odpowiedŸ.
Częstotliwość tętna to liczba uderzeń serca na minutę. Częstotliwość tętna spoczynkowego dla przeciętnego dorosłego wynosi od 60 do 80 uderzeń na minutę.
Frank has Klinefelter syndrome (47, XXY). His mother has normal skin, but his father has anhidrotic ectodermal dysplasia, an X-inked condition where the skin does not contain sweat glands. Frank has patches of normal skin and patches of skin without sweat glands. Complete the sentences. Some answers may be used more than once or not at all. Frank received the mutant chromosome from his. Nondisjunction occurred in his during the meiotic division. first, mother, father, second
Frank father has skin without sweat glands. where his mother has normal skin.So his father is also affected with a disorder and supposed to be mutant. Frank would have received the mutant chromosome from his father.
Nondisjunction would have occurred at meiosis I. Because, the chromosomes separate(and not chromatids) at that stage.while separation, both XY chromosomes would have gone into a single cell.So during meiosis II when sperm with XY chromosome fuses with Egg with X chromosome the daughter cell would have an XXY genotype which is klinefelter syndrome.
Answer:
Frank recieved the mutant chromosome from his Father
Nondisjunction occured in his Father during the first meiotic division.
Explanation:
As we can see in the question above, Frank's father has anhydrotic ectodermal dysplasia. Which is a hereditary genetic mutation that causes abnormalities in the skin, nails, hair and even teeth.
Frank has an anomaly in his skin which is the presence of spots that do not have sweat glands. As this mutation is passed from father to son, we can see that Frank inherited the mutant gene, for this anomaly, from his father.
Frank inherited this gene during the cell division process, in his father's organism. This cell division occurred during the formation of gametes (meiosis), precisely during meiosis I, where there is a reduction in the number of chromosomes to form the gametes.
If a pea plant that is herterozygous for rounds, yellow peas is crossed with a pea plant that is homozygous for round peas but heterozygous for yellow peas, how many different phenotypes are their offspring expected to show?
Final answer:
When crossing a heterozygous round, yellow pea plant with a homozygous round but heterozygous yellow pea plant, we would expect two different phenotypes: round yellow and round green peas.
Explanation:
The student asked to determine the phenotypes of offspring when a pea plant heterozygous for round, yellow peas is crossed with a pea plant homozygous for round peas but heterozygous for yellow peas. The genotypes for round peas are given as R (dominant) and r (recessive), and for yellow peas as Y (dominant) and y (recessive). Therefore, the parental genotypes will be RrYy (heterozygous for both traits) and RrYY (homozygous for round and heterozygous for yellow).
To find the number of different phenotypes, you would conduct a Punnett square analysis. The possible combinations of these alleles would show the expected offspring's genotypes. Genotypically, we expect to see 1/2 of the offspring being R-Y- (either RrYy or RRYy, both resulting in round yellow peas since the R and Y alleles are dominant) and the other 1/2 being RrYY. This cross would therefore produce two different phenotypes: round yellow peas and round green peas if any recessive alleles come into play.
"The offspring of this cross are expected to show two different phenotypes.
To determine the number of different phenotypes expected in the offspring, we need to consider the genotypes of the parent plants and use the principles of Mendelian genetics.
The first parent plant is heterozygous for both round peas (Rr) and yellow peas (Yy). The second parent plant is homozygous for round peas (RR) but heterozygous for yellow peas (Yy).
The cross can be represented as follows:
RrYy (first parent) x RRYy (second parent)
When we perform a dihybrid cross, we can look at each trait separately:
For the shape trait (round vs. wrinkled):
- The first parent contributes either R or r with equal probability.
- The second parent contributes R (since it is homozygous RR).
For the color trait (yellow vs. green):
- The first parent contributes either Y or y with equal probability.
- The second parent contributes either Y or y with equal probability (since it is heterozygous Yy).
Now, let's look at the possible gametes for each trait:
- Shape: R and r (from the first parent), R (from the second parent).
- Color: Y and y (from both parents).
The possible combinations of gametes for the offspring are:
- RY, Ry, rY, ry
Since the second parent is homozygous for the round trait (RR), all offspring will inherit the R allele for round shape from this parent. Therefore, the shape of the peas in the offspring will be round regardless of the allele received from the first parent.
For the color trait, since both parents can contribute either Y or y, the offspring can have the following genotypes: YY, Yy, or yy. However, because the yellow color (Y) is dominant over green (y), the YY and Yy genotypes will result in yellow peas, while only the yy genotypes will result in green peas.
Therefore, the offspring will show two different phenotypes:
1. Round, yellow peas (from R_Y_ or R_Yy genotypes)
2. Round, green peas (from R_yy genotypes)
In summary, the offspring will exhibit two phenotypes: round, yellow peas and round, green peas."
The evaporation of perspiration from the skin helps to ______ the body.
A. cool down
B. warm up
When kristi, a vegetarian, combines foods such as beans and rice to consume the right amino acids, she is practicing enzyme reduction. weight management. protein matching. mutual supplementation?
The action of combining foods such as beans and rice to consume the right amino acids is called mutual supplementation. It involves combining two or more incomplete protein sources to create a complete protein source. It is crucial for vegetarians who typically lack one or more essential amino acids in their diet.
Explanation:When Kristi, a vegetarian, combines foods such as beans and rice to consume the right amino acids, she is practicing mutual supplementation. This strategy entails combining two or more incomplete protein sources to form a complete protein source. For vegetarians like Kristi, it's essential because most plant-based foods don't contain all nine essential amino acids that the human body needs but can't produce on its own. By eating a combination like beans and rice, Kristi can get all the necessary amino acids in her diet.
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Kristi is practicing mutual supplementation, which entails combining two or more incomplete protein sources to provide all the necessary amino acids. Proteins are the primary building blocks of the body, made up of amino acids linked by peptide bonds. This practice of mutual supplementation has no negative impact on health or athletic performance.
Explanation:When Kristi, a vegetarian, combines food options like beans and rice to consume the right balance of amino acids, she is practicing mutual supplementation. This term refers to the approach of combining two or more incomplete protein sources to create a meal that provides all of the essential amino acids your body needs. It's a common practice among vegetarians and vegans.
Proteins are polymers made up of amino acids linked by peptide bonds. They are the primary building blocks of the body. The protein making process utilizes the breakdown products of carbohydrates and lipids originated from metabolic processes. As such, these energy-yielding nutrients are also critical even though they might seem optional if you miss a single meal.
The practice of mutual supplementation does not have any negative impact on health or athletic performance. In fact, research by Lynch Heidi et al. looked into the impact of plant-based diets on exercise performance and found that they didn't suffer from disadvantages when compared to omnivorous meal plans.
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Which of the following represents the correct order of the parts of neurons that are involved in the flow of information, beginning with the presynaptic cell and ending where a synapse is made with a postsynaptic cell?
a. Dendrites, cell body, axon hillock, axon, axon terminals
b. Cell body, axon terminals, axon hillock, axon, dendrites
c. Axon, cell body, dendrites
d. Axon terminals, axon hillock, cell body, dendrites
e. Synapse, axon, cell body, dendrites
The correct answer is option a, that is, dendrites, cell body, axon hillock, axon, and axon terminals.
The nerve cells or the neurons exhibit three parts, which conduct the activities of integration and communication, which are dendrites, axons, and axon terminals. The dendrites refer to the sections of the neuron, which attain stimulation in order to activate the cell. They transfer electrical messages to the cell body of the neuron for the functioning of the cell.
From there the impulse is transmitted to the axon hillock, which is a unique component of the cell body that associates with the axon. Here the summation of the synaptic inputs is done before getting transmitted to the axon. Finally, the impulse reaches the axon terminals present at the end of the axons that make the association with other neurons.
The correct order of the parts of neurons involved in the flow of information is axon terminals, axon hillock, axon, cell body, dendrites.
Explanation:The correct order of the parts of neurons involved in the flow of information, beginning with the presynaptic cell and ending where a synapse is made with a postsynaptic cell, is:
Axon terminals - The axon terminals are responsible for transmitting signals to other neurons or effector cells.Axon hillock - The axon hillock is the site where the action potential starts.Axon - The axon is a long, slender projection that transmits the electrical impulse.Cell body - The cell body contains the nucleus and other organelles.Dendrites - The dendrites receive signals from other neurons and transmit them to the cell body.Learn more about Order of Neuron Parts here:https://brainly.com/question/30159234
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Briefly explain why cutting a flatworm into pieces would not kill it
Cleaving a flatworm into pieces would not kill the flatworm as each piece would turn into a new flatworm. The mechanism is known as fragmentation. In multicellular species, fragmentation refers to a kind of asexual reproduction in which a species gets cleaved into fragments.
Each of these fragments forms into completely developed, mature individuals, which are similar to their parents. Fragmentation is also called splitting, it is a mode of reproduction witnessed in various species like molds, filamentous cyanobacteria, lichens, various plants, and animals like flatworms, sponges, sea stars, and some annelids.
A flatworm wouldn't die when cut into pieces due to their ability for regeneration where they can grow back severed parts, a simple body structure that lacks major internal organs, and physiological processes that rely on diffusion and cell-to-cell junctions for nutrient and gas exchange.
Explanation:Cutting a flatworm into pieces would not kill it because of its remarkable ability for regeneration. This means that if an individual is severed, it can regrow its head or tail, or even several heads if the planaria is cut lengthwise. Additionally, flatworms are capable of asexual reproduction where an entire organism can be regenerated from just part of it.
Another reason as to why a flatworm wouldn't die when cut into pieces is its physiological processes. Flatworms have an incomplete digestive system with an opening, known as the 'mouth', that is also used to expel digestive waste. This means they do not dependent on major internal organs to process their food. Furthermore, they do not have circulatory or respiratory systems, with gas and nutrient exchange dependent on diffusion and cell-to-cell junctions.
Lastly, flatworms have a simple body structure that doesn't contain any internal body cavities. Their bodies consist of three layers that give rise to various tissues, and the materials needed by the flatworm can easily diffuse through their bodies. So, no major organ would be lost if the flatworm is cut, and each piece can eventually grow into a new flatworm.
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uwu please helpppppp I dont know the answer v.v
What is forming in the diagram?
-a front
-a hurricane
-a thunderstorm
-a tornado
Answer:
Option B, Hurricane
Explanation:
Formation of hurricane involves the following steps –
a) Rise in the temperature of ocean up to 80 degree Fahrenheit.
b) Formation of more clouds and humid air by the warm ocean
c) Warm air then being lighter in weight rises above thereby reducing the center pressure, while doing so they force the surrounding waves to also move upward.
d) After reaching a certain height, the warm wind flow outward thereby allowing the air below the storm to rise further
e) Humid air then forms the cloud from the storm
f) The hurricane is further strengthened by the steering light winds.
All these steps are shown in this image and hence, it is an hurricane
Huntington's disease is caused by an autosomal dominant allele. It is a lethal
disease, but it persists in the human population. Which of the following statements best describes why?
a. Huntington's disease is sex-linked and every human has at least one ; chromosome; thus, the chances are extremely high for this allele to be maintained in the human population.
b. Huntington's disease presents symptoms that resemble cases reflecting a lack of dominance in some individuals; in those cases, the allele is passed on to the offspring.
c. While lethal to a parent, Huntington's disease will not be lethal to the offspring since it can skip a generation.
d. Huntington's disease presents symptoms in humans after many have already reproduced; therefore, they are unaware that they passed on Huntington's disease.
e. Huntington's disease can be treated in humans that are heterozygous for the condition, but individuals who are homozygous cannot receive treatments; thus, they pass on the alleles to their offspring.
The answer would be D. Huntington's disease presents symptoms in humans after many have already reproduced; therefore, they are unaware that they passed on Huntington's disease.
What is the name for a group individuals of the same species living together in the same area at the same time
Population, is the same species living together in the same area
Answer
population is the correct answer for
Explanation:
10) What might be one way of slowing down global warming? A) Create more open space by taking down all factories and plant trees there. B) Stop using cars and close down all factories to prevent any further pollution. C) Make sure that factories and cars control the amount of pollutants they release. D) Make sure that harmful gases in the atmosphere are replaced with greenhouse gases.
(PLEASE ANSWER WORTH 20 POINTS) Viruses are exceptions to the cell theory, but they have some characteristics of living things. Which of the following choices describes one of these characteristics?
A- They are made up of many specialized cells
B-They contain genetic material
C-They reproduce by mitosis
D-They contain chlorophyll
The answer is B I believe, They contain genetic material.
Hope this helped :)
What are the two types of organisms whose cells do not have a nucleus? A.Prokaryotes and euakaryotes B.Plants and animals C.Bacteria and archea D.Single celled and multicellular organisms
Final answer:
The two organisms whose cells do not have a nucleus are prokaryotes, specifically Bacteria and Archaea. This represents option C. In contrast, eukaryotic cells have a nucleus and are found in animals, plants, fungi, and protists.
Explanation:
The two types of organisms whose cells do not have a nucleus are prokaryotes. The correct answer to the question is Bacteria and Archaea, which makes option C the correct choice. Prokaryotic cells are characterized by the absence of a membrane-bound nucleus and the presence of free-floating DNA within the cell. Prokaryotes include all bacteria and archaea, which are predominantly single-celled organisms. On the other hand, eukaryotic cells, found in animals, plants, fungi, and protists, do have a nucleus and other membrane-bound organelles.
Read the passage from Animal Farm.
"You have heard then, comrades," he said, "that we pigs now sleep in the beds of the farmhouse? And why not? You did not suppose, surely, that there was ever a ruling against beds? A bed merely means a place to sleep in. A pile of straw in a stall is a bed, properly regarded. The rule was against sheets, which are a human invention. We have removed the sheets from the farmhouse beds, and sleep between blankets. And very comfortable beds they are too! But not more comfortable than we need, I can tell you, comrades, with all the brainwork we have to do nowadays. You would not rob us of our repose, would you, comrades? You would not have us too tired to carry out our duties? Surely none of you wishes to see Jones back?"
Which statement best describes how propaganda reinforces one of the themes of Animal Farm in this passage?
It demonstrates that loyalty is rewarded in totalitarian governments.
It demonstrates that corruption is at the center of totalitarian governments.
It demonstrates that revolution is a constant threat to totalitarian governments.
It demonstrates that written law is the best way to protect against totalitarian governments
It demonstrates that corruption is at the center of totalitarian governments.
Option B seems to be the most fitting for the selected passage.
- "It demonstrates that corruption is at the center of totalitarian governments."
Napoleon (or Snowball) tries to negotiate the fact that they have to sleep in the beds for the betterment of the community, as they wouldn't be able to do so without proper beds.
They then try to reinforce guilt if one were to think otherwise.
Ichthyology is an area of study that examines the physical and behavioral characteristics of fish by using experimentation. How would Ichthyology best be characterized?
Pseudoscience
Cryptozoology
Mythology
Science
Ichthyology would be best characterized under science. Thus, the correct option for this question is D.
What is Ichthyology?Ichthyology may be defined as the branch of zoology that significantly deals with fishes. It is an area of study that examines the physical and behavioral characteristics of fish by using experimentation.
According to the context of this question, the scientific study of fishes, including, as is usual with a science that is concerned with a large group of organisms, a number of specialized subdisciplines: e.g., taxonomy, anatomy (or morphology), behavioral science (ethology), ecology, and physiology must be deal in this respective branch of science.
Therefore, ichthyology would be best characterized under science. Thus, the correct option for this question is D.
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Ichthyology is a field of biology that focuses on the study of fish, including their physical and behavioral characteristics. It is a legitimate science that uses experiments and observations to gather data and analyze it to better understand fish anatomy, physiology, behavior, and ecology.
Explanation:Ichthyology is the scientific study of fish. It is a field of biology that focuses on the physical and behavioral characteristics of fish. Ichthyologists use experiments and observations to gather data and analyze it to better understand fish anatomy, physiology, behavior, and ecology.
For example, an ichthyologist may conduct experiments to study the effects of temperature on fish behavior or examine the anatomical adaptations of fish for different habitats. They may also observe fish in their natural environments and analyze their feeding habits, reproductive strategies, and social behavior.
Ichthyology is a legitimate science and is widely recognized as a specialized branch of biology. Through ichthyology, scientists gain valuable insights into the diversity and ecological roles of fish in aquatic ecosystems.
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Which type of map best shows the three dimensions of Earth’s surface?
political map
tectonic map
topographic map
road map
A topographic map I believe would do great.
Answer:
I topographic map would accurately show the three dimensions of earth's surface
Explanation:
Which of the following generally speed up a reaction?
Check all that apply.
A. Increasing the activation energy
B. Removing any catalysts
C. Adding more heat
D. Shaking the container holding the reaction
Answer:
C and D
Explanation:
A. When you increase the activation energy, the reaction will be slowed down.
The energies that a certain number of molecules have to be equal to or greater than the activation energy so that a chemical reaction can occur. If we increase the activation energy, it is harder for the reaction to occur.
B. Catalysts play a role in lowering activation energy for a reaction to occur more easily. Hence, removing catalysts is not a way to speed up a reaction.
C. Adding more heat or D. Shaking the container holding the reaction are two options that can help the molecules contact one another more frequently, thereby facilitating the occurrence of reactions.
Answer:C & D
Explanation:
Most organisms contain the same codons. true false
Answer:
True
Explanation:
All living organisms store their genetic information using the same molecules (DNA and RNA). The information encoded by these molecules needs to be decoded through gene expression and the way in which it is done is through the GENETIC CODE, which comprises of all the codons that encodes an amino acid.
There are only 20 common amino acids in proteins. These amino acids are specified by a group of three nucleotides in the DNA/RNA molecule, called CODONS. Each of these codons specifies an amino acid, although more than one codon can encode a particular amino acid, since there are 64 possible codons that can encode these 20 amino acids (more than enough).
One of the characteristics of the genetic code is its universality i.e. The same genetic code is employed by every known living organism with little or no exceptions.
The same codon specifies the same amino acid in most known living organisms. A codon does not code for a different amino acid in another organism. It is universal that codon AUG codes for Methionine in most living organisms.
This same coding in all organisms is a convincing evidence that all organisms share a common evolutionary history.
It is true that most organisms contain the same codons, as the genetic code is nearly universal. This implies that the same codons code for the same amino acids in most species, underscoring the idea of a single common ancestor for all life.
Explanation:The statement that most organisms contain the same codons is true. In molecular biology, a codon is a series of three nucleotide bases in DNA or RNA that provides the code for a specific amino acid. Importantly, this genetic code is nearly universal among all organisms, meaning the same codons direct the formation of the same amino acids in most species. This is foundational to how genetic information is transmitted and interpreted across life forms. For instance, the codon 'AUG' always codes for the amino acid Methionine in all organisms. This universality reinforces the idea of a single, common ancestor for all life.
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PLEASE HELP, BIOLOGY!!!!
Describe the process of DNA replication. Name the enzymes involved and state their functions.
Final answer:
DNA replication is the process by which a cell makes an exact copy of its DNA. It involves enzymes such as DNA Helicase, DNA Polymerase, and DNA Ligase.
Explanation:
DNA replication is the process by which a cell makes an exact copy of its DNA. It is called a 'semi-conservative' process because each newly synthesized DNA strand contains one original strand and one newly synthesized strand.
The enzymes involved in DNA replication are:
DNA Helicase: This enzyme unwinds the DNA helix by breaking the hydrogen bonds between the base pairs.DNA Polymerase: This enzyme adds new nucleotides to the growing DNA strand, using the original DNA strand as a template.DNA Ligase: This enzyme seals the gaps between the Okazaki fragments on the lagging strand.During which phase of meiosis does crossing over occur?
(A)metaphase I
(B)metaphase II
(C)prophase I
(D)prophase II
Answer: C: Prophase 1
Crossing over occurs in the first division of meiosis. Crossing over of chromatid pair occurs in PACHYTENE stage of PROPHASE I.
The crossing over is the exchange of genetic material. The crossing over takes place due to exchnage od DNA segments between non sister chromatids of homologous chromosomes. This results in new allelic combinations in daughter cells.
Crossing over occurs during prophase I of meiosis and is the first stage of meiosis, where the homologous chromosomes pair up and exchange genetic material.
The answer is (C)
Why is the process essential?The process is essential for creating genetic diversity in offspring.
The other phases of meiosis are:
Metaphase I: The homologous chromosomes line up along the equator of the cell.
Anaphase I: The homologous chromosomes separate and move to opposite poles of the cell.
Telophase I: The chromosomes arrive at the poles of the cell and the nuclear membrane reforms.
Prophase II: The chromosomes condense and the spindle apparatus forms.
Metaphase II: The chromosomes line up along the equator of the cell.
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At least half of the world’s species of land organisms live in a..
a) tropical rain forest.
b) temperate savanna.
c) temperate forest.
d) tropical desert.
A) Tropical rain forest.
This is one of the myriad reasons that it is vital that we protect and preserve our rain forests.
Answer:
(A)- Tropical moist forests
Explanation:
Rainforests have high biodiversity because they are abundant in nutrients, energy and a favourable climate. Tropical rainforests have warm temperatures and lots of precipitation. The high-intensity sunlight provides energy for producers in the rainforest and supports a wide variety of plant growth.
Since there is a lot of sunlight, there is a lot of energy in the rainforest. This energy is stored in plant vegetation, which is eaten by animals. The abundance of energy supports an abundance of plant and animal species.
I hope this helps :)
Erosion in this area is most likely caused by
A) wind.
B) water.
C) gravity.
D) action of animals.
Answer:
b) Water
Explanation:
Water is the most likely cause of soil erosion in most of the areas, where there are less trees. Hence, the option (b) is the correct answer.
Describe the different ways that the carbon cycle interacts with earth’s living organisms.(Name at least 2 ways.)
Coal is a very clean source of energy. True or False
False
Coal is a good source of energy but not very clean
Which resource is considered renewable?
a.oil
b.natural gas
c.wind
d.coal
The answer is C wind
How are temperature and salinity related in a thermohaline circulation pattern?
A. Temperature and salinity are even throughout the ocean.
B. Temperature increases with depth, causing salinity to increase also.
C. Warm water near the equator sinks, pushing higher salinity water towards the poles.
D. Cold water from the poles sinks, leaving behind higher salinity water.
Answer:
The correct answer is option D.
Explanation:
Thermohaline circulation is the circulation of currents in the deep ocean due to the density of the water which is controlled by heat and salinity. Water in the ocean posses layers or defined boundaries based on the density which provides driving force to the deep ocean currents.
Formation of these layers is due to the sinking of the cold water in the basin which and ice formation which leaves the salt in the seawater ,therefore, increasing salinity. This increased salinity increases its density and the surface water is replaced by the sinking water causing deep ocean currents.
Thus, option D is the correct answer.
Answer:
the answer would be d
Explanation:
i know this because i just took the test, hope this helps!!
The cell theory eventually replaced the concept of spontaneous generation as a result of what experimental evidence?
A) evidence that microorganisms can be filtered out with contaminated particles
B) evidence that microorganisms cannot grow in boiled broth if all the air is removed from a container
C) evidence that microorganisms cannot grow in boiled broth when new organisms were not allowed to enter
D) evidence that microorganisms can be killed when boiled out of broth
Louis Pasteur's swan-neck flask experiment provided evidence that microorganisms cannot grow in sterilized broth unless contamination occurs from new organisms entering, refuting the concept of spontaneous generation. So the correcct option is C.
Explanation:The cell theory eventually replaced the concept of spontaneous generation as a result of experimental evidence provided by Louis Pasteur. The correct answer to the question is C) evidence that microorganisms cannot grow in boiled broth when new organisms are not allowed to enter. Pasteur's swan-neck flask experiment was crucial to this discovery. He boiled broth within a flask with a swan-neck bend that allowed air to pass but prevented microorganisms from entering due to the curves. The broth remained sterile until the neck was broken, at which point contamination occurred. This demonstrated that microorganisms from the air, not a spontaneous generation, were responsible for microbial growth.
Pasteur, by using a unique design in his experiment, was able to show that when the broth is sterilized and no new microorganisms are allowed to enter, no microbial life develops. This conclusively refuted the idea of spontaneous generation and supported the germ theory of disease, suggesting that life only comes from pre-existing life. Pasteur's control group, with the flasks' necks intact, confirmed that without external contamination, the sterilized broth remained clear.
Drag each label to the correct location on the Punnett square. The Punnett square illustrates a cross for flower position in the pea plant. The phenotypes and genotypes of the parents have been given. The allele for axial position is dominant and represented by A. The allele for terminal flower position is recessive and represented by a. What is the genotype of the offspring? Heterozygous homozygous recessive homozygous dominant
Hello :3 :3
Your question is related to genetics.
Taking a look at your question, A is dominant and axial, while a is recessive and terminal.
If you cross-breed these two pea plants, and you drew the Punnett square, you would end up with Aa (100%) heterozygous on the F1 generation.
Now, on the F2 generation, you would end up with AA (25%) - Aa (50%) - aa (25%). AA is homozygous dominant, Aa is heterozygous, and aa is homozygous recessive.
Answer: Based on the phenotypes and genotypes of these offspring, it is clear that the purple flower color allele is DOMINANT and the parents are HOMOZYGOUS RECESSIVE.
Explanation:
Match the following definitions to their correct terms. 1. any chemical compound that contains carbon 2. a liquid that acts to dissolve or suspend substances 3. a chemical compound that doesn't contain carbon 4. a substance that is dissolved in a liquid inorganic solvent solute organic
Answer: 1. Any chemical compound that contains carbon - organic.
2. a liquid that acts to dissolve or suspend substances - solvent
3. a chemical compound that doesn't contain carbon - inorganic
4. a substance that is dissolved in a liquid - solute.
Explanation: Organic compounds are compounds that contain carbon, and mostly contain hydrogen.
Inorganic compounds are compounds that do not contain carbon.
A solute is a substance which is present in smaller proportions and dissolves or suspends in a liquid called solvent, which is present in larger proportions. The solute and the solvent together form a solution.
Answer:
1. Any chemical compound that contains carbon - organic.
2. a liquid that acts to dissolve or suspend substances - solvent
3. a chemical compound that doesn't contain carbon - inorganic
4. a substance that is dissolved in a liquid - solute.