BIOLOGY HIGH SCHOOL

25. to conserve water, an animals kidneys can pump ions across cell membranes, allowing water to move by________?

Answers

Answer 1
Answer:

Answer:

Active Diffusion

Explanation:

In active transport, a molecule is transported against its gradient which means the flow of molecule is from regions of low concentration to regions of high concentration. In order to carryout such transports, external energy is applied through biological pumps such as sodium-potassium pump (Na+/K+ ATPase)  which maintains the resting potential of the cell.  

Some times the energy produced by ATP is directly used and this process is known as primary active transport/diffusion
Answer 2
Answer: active deffusion.. this way the water is retained and the unnecessary salts ions are expelled out.

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when light energy excites electrons in photosystem 2, where do the electrons to replace them come from

Answers

Hi There! :)

When light energy excites electrons in photosystem 2, where do the electrons to replace them come from?

ATP

Explain why an ecological pyramid is smaller at the top than at the bottom

Answers

Because energy is wasted as heat, there is less energy available as food for organisms at each level above so ecological pyramid is smaller at the top than the bottom.

What is Ecological pyramid?

  • .An ecological pyramid is a graphical representation of the relationship between diverse living organisms at various trophic levels.
  • These pyramids have the shape of true pyramids, with the widest base and the lowest trophic level, i.e., producers, covering it.
  • The following trophic level, i.e. main consumers and so on, is occupied by the next trophic level.
  • The uppermost level of an energy pyramid has the fewest animals since it has the least amount of energy.
  • Most ecosystems only have four trophic levels since there isn't enough energy to support another at a certain point.
  • The energy produced by the plants is distributed to the a pex predator in the amount of 0.01 percent.
  • As a result, it makes logical that the pyramid's tiers grow smaller and smaller as you progress up the pyramid.

To know more about Ecological pyramid here

brainly.com/question/15025609

#SPJ2
The ecological pyramid is a diagram that shows the very much like amounts of energy or matter contained within each level. That's why it is shaped smaller at the top than at the bottom because the bigger it is the more the organisms are there are. So the bottom has more living organisms and the top has less. Hope this made sense and helped

Why do ecological equivalents not illustrate behaviors of competitive exclusion?

Answers

Well, their habitats are the same, their niches are extremely different, they experience niche dividing, and their geological locations are different

Why are all the different parts of the cell Necessary

Answers

Answer:

The correct answer would be - every part of the cell has a specific function in order to make the body properly work.

Explanation:

The cell is the building block that is called a biological and fundamental unit of the body. The cell has cytoplasm enclosed by the plasma membrane that acts as a barrier that allows specific molecules to pass in or out. The cytoplasm has many cells organelle with specific functions.

For example, the mitochondrion is an organelle of the cell that acts as a power house as it provides the body energy in the form of ATP. Another example is the golgi apparatus that modify and package the protein so it can move from the target site with the help of vesicles.

Thus, the correct answer is - every part of the cell has a specific function in order to make the body properly work.
All the parts of a cell has separate functions with out the parts of a cell the body would not function ...

What are the functions of the lower jaw and Conus arteriosus for a frog?

Answers

The primary function of the conus arteriosus is to prevent the backflow of blood and keep a steady flow of blood into the ventral aorta and the gills. The lower jaw in a frog helps in opening and closing of mouth which is necessary to catch and to holding a prey.
The primary function of the conus arteriosus is to prevent the backflow of blood and keep a steady flow of blood into the ventral aorta and the gills.

Why is Lazzaro Spallanzani’s gastric juice experiment an example of creativity in science?

Answers

Lazzaro Spallanzani's experiment is a good example of creativity because he designed the experiment and found a new way to explore gastric juices.

Lazzaro Spallanzani, an Italian biologist and physiologist, was the first scientist to dissect animals for digestion trials. He used the animals as models for humans digestive system, designed the experiment, and was the first to interpret the process of digestion.

Answer:

The correct answer is B. He was the first scientist to dissect animals and use them as models for humans in a digestion trial. (i took the test)

Explanation:
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