Answer:
Viperfish hunt by attracting prey to their glowing bellies. This adaptation is most useful for the open-ocean ecosystem.
Explanation:
In the open ocean ecosystem, not much diversity of organisms is present. In order to survive in the open ocean, an organism must have certain adaptations which will allow it to get the basic resources needed for survival. If adaptations are not provided, organisms will nor be able to survive in the open ocean ecosystem.
The adaptation of glowing bellies in the viperfish allows it to attract its preys due to which it is able to get food and survive in the open ocean ecosystem.
What is a scientific theory?
A.
a reasonable guess based on instinct
B. an imaginative idea explaining natural phenomena
C. a broad, evidence-based explanation for a phenomenon
OD.
a tentative statement with little or no predictive power
Answer:
C. a broad, evidence-based explanation for a phenomenon
Question 10 of 10
2 Points
What does polymerase chain reaction (PCR) do?
O
A. Cuts a DNA sample into fragments
O
B. Separates DNA fragments by size
O
c. Provides an overall picture of a person's chromosomes
O D. Makes more copies of a sample of DNA
Option D
polymerase chain reaction (PCR) do Makes more copies of a sample of DNA
Explanation:
A procedure to create several portraits of a distinct DNA section is termed as Polymerase chain reaction. In other words, it is a lab routine handled to compose various representations of a portion of DNA. PCR is extremely explicit and can be utilized to increase, or model, a particular DNA destination from a hybrid of DNA particles.
In PCR, the effect is regularly cycled within a range of temperature variations, which deduct countless models of the destination range to be exhibited. PCR intends to obtain sufficient of the objective DNA region that it can be examined or applied in some other way.
3. Which of the following reflect reasons for America's interest in the Panama Canal?
to protect the Americans who were in the Panama Canal zone
to protect its new holdings in the Pacific
to shorten the sailing time between the east and west coasts
to create a quick passage way to Japan so the Japanese could immigrate
to facilitate the faster movement of naval ships from the Atlantic to the Pacific
"To facilitate the faster movement of naval ships from the Atlantic to the Pacific" reflect one of the reasons for America's interest in the Panama Canal.
Answer: Option E
Explanation:
Panama Canal is an artificial or man-made waterway of 82 km located in transcontinental country in Central America and South America named as "Panama". France was the very first nation to start work on the canal in 1881 but after some engineering issues they eliminated themselves from the project.
In 1901 the United States leaded the project which finally resulted into inaugural ceremony of the panama canal on 15th August, 1914.The bypass, one of the largest and most complex engineering projects ever undertaken, significantly reduced the time for ships to pass between the Atlantic and Pacific oceans. Therefore it allowed them to avoid the long, risky Cape Horn path around the southernmost tip of South America via the Drake Passage or Magellan Strait.
Final answer:
America's interest in the Panama Canal was due to strategic military needs for rapid naval deployment, economic benefits provided by a quicker route between oceans during the Gold Rush, and the enhanced global power projection that it enabled. So, the correct statement is "to facilitate the faster movement of naval ships from the Atlantic to the Pacific"
Explanation:
The reasons for America's interest in the Panama Canal were multifaceted. From a strategic military standpoint, the U.S. needed a faster way to move its naval fleet between the Atlantic and Pacific oceans, especially after experiencing the prolonged sailing time during the Spanish-American War. The Gold Rush and the expansion of U.S. holdings in the Pacific following the war showed the economic importance of a shortcut between the two coasts. Lastly, the canal would facilitate the faster movement of naval ships, strengthening America's defense and ability to project power globally.
When the carbon atoms of the glucose molecule are broken apart in glycosis and the Rebs cycle, what is the result.
Answer:
the correct answer is CO2 and ATP
Which of these structures a
mese structures are found in plant cells but not in animal cells?
Answer: Cell wall and chloroplasts
Explanation:
There are many factors that influence the number of different kinds of plants in a biome. Why is elevation, or height, a factor that influences what kinds of plants can live in any certain biome on Earth?
Answer:
A: The elevation helps to determine the temperature of the biome.
Explanation:
Which geological feature is most common at oceanic-continental convergent boundaries?
Faults
Trenches
Rift Valleys
Volcanic Mountain Ranges
Trenches are geological feature is most common at oceanic-continental convergent boundaries.
Explanation:
Usually, the oceanic plate, because it is denser, becomes subducted underneath the continental plate. The enormous stress of the two colliding plates causes the plates to warp abit downwards along the boundary causing a trench to form that stretches the boundary.
As the oceanic plate gets subducted and ‘dives’ into the mantle, it begins to melt into magma. Usually, due to the enormous stress along the boundary, fissures develop on teh continental plate along teh boundary. The magma rises through these fissures and erupts at the surface. Several mountains form long the boundary forming another signature geological feature of convergent boundary which is volcanic arc mountains.
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Answer:
Explanation:
i think its volcanos
Most grasses of the prairies
are bunchgrasses
grow in clumps
grow in tufts
are sod-forming grasses
Answer:
are bunchgrasses
Explanation:
Laboratory Re
3. MEIOTIC DIVISION
a. Considering meiosis in humans, indicate the:
1. number of chromosomes in the parent cell
2. number of chromatids in daughter cells formed by first division
3. number of chromosomes in daughter cells formed by first division
4. number of chromosomes in daughter cells of second division
5. number of haploid cells formed by meiotic division of parent cell
1. Number of chromosomes in the parent cell is 46
2. Number of chromatids in daughter cells formed by first division is 46
3. Number of chromosomes in daughter cells formed by first division is 23
4. Number of chromosomes in daughter cells of second division 23
5. Number of haploid cells formed by meiotic division of parent cell is 4
continues.
Part B
The pressurized plants and fungi mentioned in the video have some surprising similarities. What differences would you
expect them to have?
Answer:
Plants are autotrophic organisms which means they have the ability to produce their own food by using light energy from the sun. The cell wall of plants is made up of cellulose.
Fungi have heterotrophic mode of nutrition. They cannot make their own food and take in food as a source of energy. The cell wall of fungi is made up of chitin, not cellulose.
Answer:
The green plant would be able to photosynthesize, but the fungi wouldn’t. The plants would have cellulose in their cell walls, while the fungi would have chitin.
Explanation:
An organic compound is a compound that contains Question 12 options: carbon. hydrogen. oxygen. sodium.
Answer: carbon
Explanation: a compound that contains carbon in its structure and made long chains and complex structures due to the presence of a carbon atom. An example is methane CH4.
Answer:
Carbon
Explanation:
An organic compound is a compound that contains carbon.
Carbon has the ability to form chains with other carbon atoms.
That ability is also known as catenation. So, carbon has the ability to catenate millions of organic compounds.
All known organs are made based on carbon. Without carbon there will not be life as we know it.
a solution of ph6 contains __________ h+ than the same amount of a solution of ph8
Answer:
A solution at pH 6 contains 100 times more H+ than the same amount of solution at pH 8.
Explanation:
pH of a substance determines the hydrogen ion concentration of a solution. Acidic solution tend to have a higher concentration of H+ ions as compared to that of water. They have a concentration greater than 1 × 10^{-7} M. Basic solutions have lesser concentration of H+ ions as compared to that of water. They have a concentration lesser than 1 × 10^{-7} M. A solution from pH range 1 to 6 will be acidic. A solution from pH rage 8-10 will be basic.
What molecule is used to cut out a section of DNA?
Answer: restriction endonuclease.
Explanation: restriction endonuclease recognize a specific site at a DNA molecule called restriction site and attach to it and cleave DNA into pieces by the cleavage of phosphodiester bond. Restriction site are few nucleotides in length found in the middle of the polynucleotide chain.
Why is fresh water a limited resource?
Groundwater is too difficult to access
Most water covering Earth is salt water.
The supply of water on Earth decreases over time.
Too much water is wasted on irrigation
Answer:
The supply decreases over time
Fresh water is a limited resource because too much water is wasted on irrigation.
What is irrigation?Irrigation is defined as the artificial means of watering plants in agriculture which includes canals from underground water.
This process in some areas are the only source of water for farming and this leads to wasting of excess fresh water on irrigation.
Therefore, fresh water is a limited resource because too much water is wasted on irrigation.
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true or false?? it’s in the picture. i hope it’s easy to read
The statement that All organism that are internal fertilizers develop theri offerings internally is true
What organisms fertilize internally?
When a female organism undergoes internal fertilization, the procedure takes place inside her body. Mammals, reptiles, birds, and certain fish species all exhibit this frequently. The male gametes, or sperm, are placed inside the female reproductive canal during internal fertilization, where they join the female gametes, or eggs, to complete the fertilization process.
Internal fertilization occurs in species like humans, where the embryo grows inside the body of the female until it is ready to be birthed. In contrast, fertilization happens outside the body when using external nutrients, usually in water for aquatic organisms.
Most bony fish, numerous reptiles, some cartilaginous fish, the majority of amphibians, two mammals, and all birds exhibit this. Insects and reptiles lay leathery eggs, whereas birds and turtles lay eggs with
what is the general name for a liquid that is used to make cell structures under a microscope easier to see
Is it a stain???? Cause I don’t know
Please hellppp!!! Quick! X
Answer:
Cytoplasm is the answer.
Explanation:
Amino acid is to protein as
A. fat is to lipid.
B. DNA is to RNA.
C. sugar is to fat.
D. simple sugar is to starch.
Disorder treated by restricting milk
Galactosemia is a disorder that is treated by restricting milk.
Explanation:
The lactose sugar present in the milk is made up of simpler subunit galactose and glucose. In some individuals, the enzyme galactase-1-phosphate uridyl transferase is not present or not working properly. This enzyme is required to convert galactose into glucose. As a result of this dysfunctional enzyme large amount of galactose is present in the blood. In such cases, milk is avoided.
Why is it important that cardiac muscle tissue does not tire
It is important that cardiac muscle tissue does not tire so that a continuous supply of Oxygen to the tissues is maintained.Otherwise, the metabolic activities of the body will cease.
Explanation:
Cardiac muscles are the muscles of the heart.
The pumping mechanism of the heart is due to the contraction and relaxation of cardiac muscles.
The blood that carries oxygen is transported to the different tissues of the body through the blood vessels and provides the oxygen to the tissues for metabolic functions.
If cardiac muscles tire, then the heart will stop pumping and oxygenated blood will not reach the cells. Deficiency of oxygen will result in reduced ATP production and soon the activities of tissues will cease and multiple organ failure will occur.
This will lead to the death of the individual.
Water is made of two hydrogen atoms and one oxygen atom bonded together. Julia is describing how water undergoes a
physical change when it boils. She says that the particles shift to be farther apart and that the oxygen and hydrogen
separate. She also says that the total mass of the steam is the same as the initial water, and that heat energy was required
to cause the change. She finishes her description by saying that the steam can be turned back into water if it is cooled.
Which is the mistake in her description?
A>The total mass remains the same in physical changes.
B>The arrangement of particles may change in physical changes.
C>Atoms remain bonded to each other in physical changes.
D>Energy changes may occur in physical changes.
B
Julia made a mistake in her description that the arrangement of particles may change in physical changes.The arrangement of particles may change in physical changes.
Explanation:
Change of phases in a substance is a physical change. The chemical elements of the substance do not change, only their arrangement or form.
Therefore when water changes phase from liquid to water vapor, the water molecules chemical structure do not change. This can only occur by chemical changes, not physical changes. The water molecules merely get farther apart from each other due to the increased kinetic energy they acquired from the heating.
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The mistake in Julia's description is her statement that the hydrogen and oxygen atoms separate during boiling. In fact, atoms in a molecule stay bonded together in physical changes. The correct option is C.
Explanation:The mistake in Julia's description of water undergoing a physical change when it boils is her claim that the oxygen and hydrogen atoms separate. This statement is incorrect as the atoms within a molecule do not break apart during a physical change, such as the change from liquid water to steam.
In a physical change, the particles of a substance may move further apart, and the substance may absorb or release energy, but the molecules themselves do not break up. Therefore, the hydrogen and oxygen atoms in a water molecule stay bonded together whether the water is in liquid, solid, or gaseous state. This is reflective of choice C: Atoms remain bonded to each other in physical changes.
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Meiosis results in _____.
4 haploid daughter cells
2 haploid daughter cells
4 diploid daughter cells
2 diploid daughter cells
Meiosis results in 4 haploid cells.
Explanation:
Meiosis undergoes two cycles namely: meiosis 1 and meiosis 2
Meiosis occurs in germ or sex cells in which four haploid daughter cells are formed each having one of a chromosome pair that exists in diploid cells.
Meiosis results in 4 haploid daughter cells.
Meiosis results in 4 haploid daughter cells. During meiosis, a diploid cell undergoes two rounds of cell division to produce four haploid cells, each with half the number of chromosomes as the parent cell.
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What is included in the nervous system?
a) Heart
b) Skin
c) Brain
d) Lungs
Lungs and skin
Answer:
The answer is C) Brain. The brain processes the signals that are sent to it from the nerves in your body.
Answer:c) Brain
Explanation:
Nervous system is the seat of coordination of all actions and sensory information through sending of signals to all body part. It is divided into two; the central nervous system(CNS) and the pheripheral nervous system (PNS). The CNS comprise of the Brain and spinal cord.
The Brain is what is what is included in Nervous system
The cell theory applies to___________
1
multicellular organisms.
2
all answers are correct.
3
bacteria.
4
plants and animals.
The cell theory applies to multicellular organisms, bacteria and plants and animals.
The cell theory:Cell theory is a theory that says all living organisms are made up of cells, cell is the basic structural,functional unit of all living organisms and every cell come from pre-existing cell. The cell is basic unit of reproduction also.
Viruses are not true cells. They lack the some important part of the cell i.e the protoplasm and hence the cell theory is only not applicable to viruses.
therefore, The cell theory applies to all answer are correct (option 2) is the correct answer.
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The cell theory applies to multicellular organisms, bacteria, plants and animals.
What is cell theory?Cell theory is a scientific theory first formulated in the mid-nineteenth century, that living organisms are made up of cells, that they are the basic structural/organizational unit of all organisms, and that all cells come from pre-existing cells.
Matthias Schleiden, a German botanist, and Theodor Schwann, a British Zoologist formulated the cell theory in the mid-nineteenth century.
Knowing that all living things are made up of cells allows us to understand how organisms are created, grow, and die.
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Structures that are similar in structure but different in function
Answer:
Some organisms have anatomical structures that are very similar in embryological development and form, but very different in function. These are called homologous structures. Since these structures are so similar, they indicate an evolutionary relationship and a common ancestor of the species that possess them
Explanation:
What is in error in dna called
Errors in DNA are called mutations.
Which is an advantage of sexual reproduction over asexual reproduction?
Answer:
in sexual reproduction we get genes from both our parents and we have a combination of them...that leads to genetic diversity...more diversity means more chances to survive different environment conditions.... in asexual reproduction.. offsprings are identical.if environment conditions are rough...all of them won't stand a chance...and also....in sexual reproduction genetic variation can lead to evolutionary advancements
What is the Taxonomic System and why is it important? plz answer for 50 pts
Answer:
Taxonomic system of classification can be described as the method of classification on the basis of which organisms are classified into more and more inclusive groups. The taxonomic system of classification was devised by Carolus Linnaeus.
This system of classification is important because organisms can be grouped on the basis of their similarities. The organisms which are more closely related in terms of structure and function are more closely related to one another. Hence, it helps to group organisms on the basis of their similarities. It helps scientists to organize the diversity of life.
59:44
Which property of soil depends on the size of particles?
O color
O odor
O temperature
O texture
Mark this and return
Next
Submit
Answer:
The answer is O. Texture
Explanation:
Answer:
the answer is d texture
Explanation:
A scientist wrote a paper titled “Directional Selection in Action” after observing a population of mice for 15 years. The mice typically preferred to eat berries, although a few would also eat insects. After a drought in year 3, the scientist observed that more mice were eating insects. By year 10, most of the mice in the population ate insects in addition to berries. Which best describes her article?
Her title is accurate because two opposite extremes are favored.
Her title is accurate because one extreme is favored.
She should change her title because she is observing stabilizing selection.
She should change her title because selection cannot be observed.
Answer:
The correct option is B) Her title is accurate because one extreme is favored.
Explanation:
In ecological studies, directional selection can be described as a selection due to which an extreme phenotype is favoured by natural selection and evolution causes the change in allele frequencies in favour of the extreme phenotype.
In the condition described in the question, the phenotype for eating insects was the extreme phenotype which was favoured by natural selection. The allele frequency for this extreme phenotype became abundant due to evolution. Hence, option B is correct.
Answer:
b, on ed2020
Jane told Jill that the name "sunflower' comes from the fact that sunflowers follow the sun in the sky throughout the day. Jane said
that sunflowers actually turn around on their stems to find the sun. To test this idea, Jane and Jill designed an experiment. They
grew a pot of sunfowers outside in natural sunlight, one pot in the house near, but not directly in front of a window, and the final pot
inside the house, away from all windows. All other growing conditions were the same: soil, water, pot size. The girls could not
regulate the outdoor temperature, but since it was spring, the day and night temperatures were pretty close to the indoor
temperature
What would be the next logical step in this experimental design?
to water the plants at exactly the same time each day
to place a shade over the window at different times throughout the day
to track the direction the outdoor sunflower heads were facing throughout the
day
to track the direction the sunflower heads were facing each hour throughout the
day
Answer:
The correct option is D) to track the direction the sunflower heads were facing each hour throughout the day.
Explanation:
The next step that Jane and Jill should take is to track the direction of each sun flower. They should also check whether the sunflower that is placed in the Sun is the only one that tilts or whether the other sunflowers also tilt. After properly tracking the results, they should be able to draw the results and deduce a conclusion. Hence, Option D is correct.