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riadik2000 [5.3K]
2 years ago
8

Which organ is responsible for pumping oxygenated and deoxygenated blood throughout the body?

Biology
1 answer:
Marina86 [1]2 years ago
6 0

the answer is A its the heart

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Most aquatic organisms can survive only within a specific pH range. An increase in the number of hydrogen ions (H+) in a lake wi
Ipatiy [6.2K]

Answer:

An increase in the number of H+ ion in the lake with many aquatic would cause cell shrinkage by the removal of water from the cell.

Explanation:

Every organism tries to maintain a constant PH inside their body to regulate the homeostasis of their body.

                     An increase in the number of H+ ion or proton in a lake will increase the osmotic pressure of the water present in the lake.As the osmotic pressure of Lake"s water is increased it will draw water out from the the cells of aquatic organism causing the cells to shrink thus decreasing the volume of the cell and if the H+ ion concentration rises at a high level cell death can occur.

3 0
3 years ago
Large old-growth dominant forest trees, such as the redwoods, are part of a climax community. Such trees
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Large old-growth dominant forest trees, such as the redwoods, are part of a climax community (<span>final and permanent stage of vegetation)</span>. Such trees develop in a biome. These trees are also refers to a<span>n </span>old-growth forest<span> — also termed primary </span>forest<span>, virgin </span>forest<span>, primeval </span>forest<span>, late seral </span>forest<span>, </span>
6 0
3 years ago
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Which of the following statements about taxonomy systems is false?
yan [13]

Answer:A

Explanation:

6 0
3 years ago
Which set of alleles is purebred recessive?<br> A) aa<br> B) Aa<br> C) AA
emmasim [6.3K]

Answer:

aa

Explanation:

the answer is pretty obvious it would be a a because a dominant allele would be to Capitol a and a lower capital a and one capital a would be a mix and a purebred would be to lowercase A's

7 0
3 years ago
Multicellular organisms are made up of different types of differentiated cells. Given that all cells in an organism
andrew11 [14]

Answer:

There are histones in the nucleus that DNA coils around. The part of the DNA that is coiled around the histones is not accessible, and cannot be expressed in that cell. DNA that is not wrapped around a histone can be transcribed.

Explanation:

6 0
4 years ago
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