What do theories hypothesize about the conditions of Earth's early atmosphere?
Answer:
I think it is that organic molecules like carbon combined together using the power for lightning to make inorganic molecules, and amino acids, etc. this can be seen in the Miller-Urey experiment
Explanation:
Answer:
The conditions present on early earth were like: High temperature, reducing atmosphere containing methane, ammonia, etc. and volcanic eruptions.
Explanation:
The gaseous atmosphere which we see today was not present on the early earth. Due to volcanic eruptions, the molten mass was released and moved slowly over the surface of earth. From this molten mass several gases were release into the surroundings such as carbon dioxide, methane, ammonia and water vapor. The ultra violet radiation from sunlight caused the breakdown of water molecules into hydrogen and oxygen. Hydrogen being lighter escaped into the surroundings and oxygen readily combined with other gases to form again H2O, CO2 and many other gases. So we can say that there was no free oxygen available in the early atmosphere and it was reducing in nature. Oxygen also participated in the formation of ozone i.e O3 molecule under the influence of UV rays. These ozone molecules resulted in the formation of ozone layer which acts as a shield to save present atmosphere from harmful UV rays.
In an experiment, the hypothesis is If the wavelength of the light shining on a plant is shortened, the rate of photosynthesis is slowed down. If this experiment is performed, the dependent variable _____.
will be the wavelength of the light
will be the plant on which the light is shining
will be the rate of photosynthesis
cannot be determined
Answer:
will be the rate of photosynthesis
Explanation:
A dependent variable in an experiment is the process or factor that is altered or affected by a related factor called the independent variable. In the given experiment, effect of wavelength of light is observed on the rate of photosynthesis in plants.
Here, the rate of photosynthesis is supposed to be changed when the experimental plant is exposed to various wavelengths of light. This makes the "rate of photosynthesis" dependent variable for the experiment as it is affected by the "wavelengths of the light" to which it is exposed.
Which statement describes the reaction for cellular respiration?
The equation is carbon dioxide + water → glucose + oxygen + water and energy is required in the form of light
The equation is glucose + oxygen → carbon dioxide + water and energy is produced in the form of ATP.
The equation is carbon dioxide + water → glucose + oxygen + water and energy is produced in the form of ATP.
The equation is glucose + Exygen carbon dioxide + water and energy is required in the form of light.
Answer:
The equation is glucose + oxygen → carbon dioxide + water and energy is produced in the form of ATP.
Explanation:
The cellular respiration process is the opposite of photosynthesis, so it starts with glucose and O2.
Answer:
The equation is glucose + oxygen → carbon dioxide + water and energy is produced in the form of ATP.
Explanation:
Cellular respiration is a phenomenon that basically consists of the process of extracting chemical energy accumulated in the molecules of diverse organic substances, such as carbohydrates and lipids.
In this process, the oxidation of organic compounds of high energy content, producing carbon dioxide and water, and the release of energy, is used to allow the various forms of cellular work to occur.
The cytoplasmic organelle responsible for this breathing mechanism is the mitochondria, acting as a true power plant.
The equation of cellular respiration is:
glucose + oxygen → carbon dioxide + water and energy is produced in the form of ATP.
By this equation it is possible to verify that the glucose molecule (C6H12O6) is degraded to give relatively simpler substances (CO2 and H2O).
If blood is in short supply which blood type would be the most Beneficial to have on hand if someone needed a blood transfusion?
the human stomach need to maintain a pH level between 1 and 2 in order to properly digest food. what is true regarding the environment of the human stomach
The environment of human stomach is Acidic.
This environment is perfect for the activation of enzymes that facilitate the breakdown of proteins into smaller protein fragments, which is the first step in digesting food.What is an enzymes?Enzymes are proteins that help speed up metabolism or the chemical reactions in bodies. They build some substances and break others down. All living things have enzymes. Our bodies naturally produce enzymes. But enzymes are also in manufactured products and food.What is a protein?A protein is a naturally occurring, extremely complex substance that consists of amino acid residues joined by peptide bonds. Proteins are present in all living organisms and include many essential biological compounds such as enzymes, hormones and antibodies.To know more about antibodies here
https://brainly.com/question/13981216
#SPJ2
Which of the following is the best definition of a Eukaryota?
A. a one-celled organism that does not have a membrane-bound nucleus
B. a one-celled organism that does not have a cell wall
C. an organism whose cells each contain a membrane-bound nucleus
D. an organism whose cells each have a cell wall
Answer:
C. an organism whose cells each contain a membrane-bound nucleus
Explanation:
Please mark brainliest and have a great day!
Which of the following is the earliest era of Earth's geologic time scale? Cenozoic
Mesozoic
Precambrian
Paleozoic
what happens inside muscles when they contract
Answer:
They move their heads protruding out in all directions forming a thick myosin filament.
Explanation:
Please mark brainliest and have a great day!
Answer:
Myosin heads attach to and move along actin-binding sites
Explanation:
I just took the test, and I got 100%!!!
Explain how natural selection works
Answer:
Natural selection. Is based on the theory. Given by Charles Darwin
Explanation:
Natural selection states that "Sirvival of the Fittest "meaning to say that if you are able to make food , compete with the world and cope up with the various environment factor then u can survive else you might get extinct .
Final answer:
Natural selection is a process by which organisms develop traits that help them survive and reproduce. Giraffes evolving longer necks is an example of this process.
Explanation:
Natural selection is a process by which organisms in a population develop traits that help them survive and reproduce. Traits that offer an advantage are more likely to be passed on to offspring, increasing the chances of survival for individuals with those traits.
An example of natural selection at work is the evolution of giraffes. Over time, giraffes with longer necks were better able to reach food sources in tall trees, leading to the survival and reproduction of individuals with longer necks and the increase in the overall population's average neck length.
Explain how adaptive traits ]are important in our constantly-changing the world.
Answer:
The history of life shows that organism evolves with time as a result of changes in their surrounding environment.
The organism evolves to best fit in their changing environment with the mechanism called adaptation. These adaptation takes place due to mutation in their genes and is passed on to their offspring to become established in the population.
The adaptation is the driving force of natural selection which helps in the survival of the fittest organism to their niche. For example, the crocodile is reptile which still exists on this earth from the time of their origin in age of reptiles or Mesozoic era.
Thus, the adaption helps in the survival of the organism.
Reduction of the number of sets of chromosomes occurs during:
Answer:
meiosis I
Explanation:
Reduction of the number of sets of chromosomes occurs during meiosis I.
During Meiosis I crossing over of genetic material occurs between chromosome pairs
Which of the following describes how binary fission and mitosis are similar?
A)they are both used for growth or repair
B)they both break down membrane-bound nuclei
C)both invoke the replication of a single stand of DNA
D)Both replicate genetic material
Final answer:
Binary fission and mitosis are similar because both processes replicate genetic material to produce genetically identical daughter cells from the parent cell.
Explanation:
Binary fission and mitosis are similar in that D) Both replicate genetic material. Binary fission is known as cellular cloning in bacterial cells, involving the replication of their single, circular DNA, whereas mitosis involves the replication of multiple chromosomes in eukaryotic cells. Regardless of the complexity or organism type, both processes ensure the production of daughter cells that are genetically identical to the parent cell. This is crucial for asexual reproduction as well as for growth, development, and repair in multicellular organisms.
Being able to roll the tongue is dominant over not being able to roll the tongue.
R R
r Rr Rr
r Rr Rr
What is the probability that the offspring will be unable to roll the tongue?
0
2
3
4
According to the Punnett Square and the information given above, the probability of offspring that will be unable to roll the tongue is 0%. Thus, option A is correct.
What is Probability?Probability may be defined as something that is likely to happen at random. It is the likelihood of any event.
For determining the ability to roll the tongue, only one dominant allele is required but to possess an inability to roll the tongue both the recessive alleles of a trait are required for the expression.
Therefore, it is well described above.
To learn more about Dominant and recessive traits, refer to the link;
https://brainly.com/question/848027
#SPJ2
The densest water in the ocean is found ?
Answer:
yes
Explanation:
Surface water is enriched in salt from sea ice formation. Due to its increased density, it flows down the Antarctic continental margin and continues north along the bottom. It is the densest water in the free ocean, and underlies other bottom and intermediate waters throughout most of the southern hemisphere.
Answer:
In the ocean's deepest parts. Just took the test.
What must be done to breed dogs for a particular trait?
Mate any dogs and see what variations occur.
Place dogs in places where they can acquire the trait.
Mate two dogs that have the desired trait.
Protect dogs with the trait from natural selection.
Answer:
Mate two dogs that have the desired trait
Explanation:
In order to breed dogs for a particular trait one ought to mate two dogs that have the desired trait. This process is referred to as artificial selection or selective breeding.
Selective breeding refers to a process by which new organisms with desirable characteristics or traits are developed. Breeders select two parents having the desired phenotypic trait to reproduce thus yielding offspring with the desired trait.
Answer: Mate two dogs that have the desired trait
Explanation:
BRAINLIEST !PLEASE PLEASE PLEASE ANSWER THIS! I'M CRYING SO BAD RN. You might need to flip the pic
Answer:
You could “design” a home that uses solar energy instead of fossil fuels.
Solar energy is a great replacement to fossil fuels because it is abundant everywhere in the world, does not run out, does not release pollutants/contribute to global warming, and is always available.
You did not use wind or water energy because they are not as widely accessible or as easy to utilize as solar energy. Both require large instillations of intricate machines/systems in specific areas with water sources or high winds.
People will probably have solar energy in their homes in the future because it is efficient, accessible, and abundant.
Which of the following is the best definition of aerobic respiration?
O
A. The cellular process that releases energy by breaking down
glucose
O
B. Physical activity that involves the repeated motion of large muscle
groups
O
C. Physical activity that increases heart rate and breathing rate
O
D. The cellular process that converts solar energy to chemical energy
The best definition of aerobic respiration is cellular process that releases energy by breaking down glucose.
CELLULAR RESPIRATION:
Cellular respiration is the process by which living organisms obtain energy (ATP) by breaking down food molecules in their cells.Cellular respiration is a metabolic process undergone by every living cell. It occurs aerobically in the presence of oxygen, which is used to breakdown glucose molecules. Therefore, the best definition of aerobic respiration is cellular process that releases energy by breaking down glucose.Learn more at: https://brainly.com/question/13721588?referrer=searchResults
Which structure may be used to store food?
-taproot
-root hair
-root cap
-fibrous root
Answer: Taproot
Explanation:
Because....
a taproot is a main root is used to store food. So therefor, the correct answer would be Taproot.
* Hopefully this helps:) Mark me the brainliest:)!!!
Which statements summarize absolute and relative age? Check all that apply.
Relative age involves a comparison.
Actual age is in relation to the age of something else.
“I am 35 years old” is a statement of absolute age.
Rocks can be dated using both absolute age and relative age.
Geologists use both absolute dating and relative dating.
Answer:A,C,D,E
Explanation:
Absolute age is the actual age of something, while relative age involves comparison. Geologists use both absolute and relative dating methods to study Earth's history.
Explanation:Absolute age is the actual age of something, measured in years. An example of a statement of absolute age is 'I am 35 years old.' On the other hand, relative age involves comparing the age of one object or event to another.
Geologists use both absolute dating, which uses radioactive isotopes to determine the numerical age of rocks, and relative dating, which helps them establish the sequence of events in Earth's history. Both methods have advantages and limitations, and they are used together to create a more complete understanding of geological time.
Match the descriptions to the processes. Ice cream starts dripping down the sides of an ice cream cone. Fog is created by using dry ice. Frost forms on trees on a very cold day. The mirror gets fogged up when you breathe on it. Your wet hair dries after a few minutes. Liquid glass cools and hardens.
Which of the following is true of clouds at medium altitudes?
A. They are the result of occluded fronts.
B. They do not bring precipitation.
C. They are composed mostly of liquid water.
D. They are the cause of fog.
(Apex)
Answer:
C. They are composed mostly of liquid water.
Explanation:
Medium altitude clouds form between 2000 to 6000 meters. They are majorly composed of liquid water or water droplets. When temperature is cold enough they can be composed of ice crystals too, specially in polar regions.
They are usually of altocumulus and altostratus type. Altocumulus occurs in several layers and can appear as white or grey.It can be in form of sheets, patches or rolls. Altostratus is greyish or bluish and generally indicates the arrival of rain. It partly or totally covers the sky.
the answer is
they are composed mostly of liquid water.
i hope it's helpful.
Some protists can reproduce both sexually and asexually. What's a major advantage of each
Answer:
Sexual reproduction responsible for genetic diversity, and asexual reproduction is fast and rapid.
Explanation:
Sexual reproduction is a type of reproduction, that involves producing new organisms by recombination of the genetic information from 2 organism s of opposite sexes. Genetic diversity is major advantage, the new organism is formed by recombination of the genetic material of both the parents.
Asexual reproduction involves producing new organisms from a one of a parent having exact similar genetic makeup like the parent cell. It produces higher number of offspring in a rapid manner.
When wind creates a sand dune, the sheltered side of the dune _____.
is less steeply sloped than the windward side
has the same incline as the windward side
is more steeply sloped than the windward side
Answer:
is more steeply sloped than the windward side
Explanation:
The wind is the primary agent that moves the sediments and creates sand dunes in the deserts. When the wind starts to slow down it loses its power to carry the sediments so it starts to deposit them. As it does, a hill of sand is starting to form, called a sand dune. The wind will constantly be bringing new sediments, and the windward side is the one that gets them, while the leeward side doesn't. This results in the windward side to be much larger, but also to have much lower angle of fall, while the leeward side is having a very steep slope as it is constantly building on the top, but not the rest of it.
Answer:
C]is more steeply sloped than the windward side
Explanation:
if the strand of DNA with the sequence TTA mutated to TTG, would this be a silent or missense mutation
Answer:
Missense mutation
Explanation:
Sort the examples by the type of diversity that they exhibit
A park has 80 species of trees
Red, yellow, and orange
bell peppers are all members
of the same species
Individuals of the same
lizard species have
different mating strategies.
Five different bird species are
at a bird feeder.
Genetic Diversity
Species Diversity
Explanation:
Red and yellow bell........... - genetic diversity
A park has....... - species diversity
Five different bird..... - species diversity.
Answer:
Red, yellow, and orange bell peppers are all members of the same species = Genetic Diversity.Individuals of the same lizard species have different mating strategies. = Species Diversity Five different bird species are at a bird feeder. = Species DiversityExplanation:
Genetic diversity refers to any inherited biological variation accumulated during the evolutionary process, generated, fundamentally, by mutation in the nucleotide sequence during DNA replication. In summary, through genetic diversity we can see a biological difference between individuals of the same species. An example of this is: "Red, yellow, and orange bell peppers are all members of the same species ".
Species diversity is the term used to describe the existence of different species of the same animal in an environment. For example, there are different species of ladybug in a garden, even though it is the same animal, each species of ladybug has genetic and morphological differences. Other examples of species diversity are:
Individuals of the same lizard species have different mating strategies. Five different bird species are at a bird feederwhich characteristics are typical of a human population in the postindustrial stage?
The correct answer is emerging adulthood.
Answer:
Post-Industrial stage:During the post-industrial stage, the human population experienced a high birth rate, as there were more secure procedures and there were more medical facilities for the patients.
Explanation:
High Birth rate:Research work was performed in doing safe new born deliver, along with that more advance instruments were developed creating it more easy for any doctor or nurse to apply the procedures easily. As, before there was lack of procedures and there were less advance instruments in order to carry out the whole process of delivery.
Innovation of new and effective medicines:As there were research works carried out by medical personnel to improve the effectiveness of medicines, which eventually resulted in cure for more diseases. As there were less number of deaths caused due to illness or any disorder inside the human body.
Increase rate of literacy:There was increase in the literacy rate in the different regions around the globe. As now there were many institution and schools that was offering quality education to the masses.
More places to live safe and with convenience:There were more places for the people around the globe to live, as there were strong structures been built in the shape of buildings and then after that it went on to increase the level of convenience for people to live safely.
How is radar used to forecast weather
Radar is used in weather forecasting by emitting radio waves and detecting if they bounce back after hitting precipitation particles. This data helps construct a detailed map of precipitation intensity and motion, aiding in the projection of future weather conditions.
Explanation:Radar, an acronym for 'Radio Detection and Ranging', is instrumental in weather forecasting. Meteorologists use radar technology to monitor the movement and intensity of precipitation. Radar works by emitting a pulse of radio waves and listening for any of that pulse that is reflected back.
When these waves encounter a precipitation particle in the atmosphere (like rain, snow or hail), they bounce back to the radar antenna. By analyzing these return signals, radar systems can construct a detailed map of the precipitation intensity and motion.
This information is then used to track storms, determine their structure, and predict their future movement and intensity. This knowledge helps meteorologists make accurate weather forecasts and issue timely warnings for severe weather conditions.
Learn more about Radar in Weather Forecasting here:https://brainly.com/question/33444969
#SPJ6
Which of the following contributes most to climate change
Can you comment on this answer and leave me the options ...? thank you
What are three processes that contribute to genetic variation during sexual reproduction
Genetic variation during sexual reproduction comes from Crossing Over, Independent Assortment, and Random Fertilization. These processes mix up genes to create new combinations, contributing to genetic diversity.
Explanation:Three processes that contribute to genetic variation during sexual reproduction are Crossing Over, Independent Assortment, and Random Fertilization.
Crossing Over occurs during Prophase I of meiosis when homologous chromosomes exchange genetic material. This results in new combinations of genes on each chromosome and contributes greatly to genetic variation.
Independent Assortment happens during Metaphase I of meiosis when tetrads line up at the equator of the cell randomly with respect to each other. This randomness results in each of the four daughter cells created in meiosis having a different set of chromosomes, and thereby different genetic information.
Random Fertilization is the process wherein from millions of possible sperms and eggs, only a single sperm gets to fertilize an egg. This randomness also contributes to the enormous genetic variation seen in sexually reproducing organisms.
Learn more about Genetic Variation here:https://brainly.com/question/32072667
#SPJ6
what is gene flow? Apex
A: selection for average traits
B: when a population splits in two
C: a mutation becoming more common
D: genes moving between two populations
Answer:
gene flow is the transfer of genetic variation from one population to another.
option D
Gene flow is genes moving between two populations.
Gene flow refers to all the mechanisms that generate movement of genes from one population to another.
The populations of a species can exchange genes to a greater or lesser degree, either by nuclear genes or uniparental genomes, as well as by extinction and recolonization events of entire populations.
Gene flow conceives migrant populations that carry different alleles (or different frequencies of the same alleles), which can change the gene and genotypic frequencies of the recipient population.
The study of gene flow is vital in evolutionary biology, since it is an important component in the structure of populations, being a determining factor in the generation of biological diversity of populations.
Therefore, we can conclude that gene flow is genes moving between two populations.
Learn more here: https://brainly.com/question/22899597