<h3><u>Answer and explanation;</u></h3>
- DNA is a double stranded molecule. Covalent and hydrogen bonds pray important roles in the functioning of DNA molecules.
- <em><u>Covalent bonds occur within each linear strand and strongly bond the nucleotide bases, sugars, and phosphate groups occurring both within each component and between components.</u></em>
- <em><u> Hydrogen bonds occur between the two strands and involve a base from one strand with a base from the second in complementary pairing.</u></em>
- Hydrogen bonds helps the complementary base pairs in DNA; guanine with cytosine and adenine with thymine to connect to one another. The hydrogen bonds between these complementary pairs helps keep the two strands of DNA helix together.
A. only men have them a male Carry one X and one Y
1. <span> A. The algae directly feeds the large-mouth bass and wood duck. Consumers are the same thing as heterotrophs.
2. </span><span>The blue arrow points to an animal which gets all its energy from (i.e., eats) only other animals
3. </span><span>Primary consumers are the organisms which eat producers. So without the primary consumers eating the producers, the number of producers will probably increase.</span>
The correct answer for the question that is being presented above is this one: "B. Aldosterone-regulated Na+ pump activity would increase dramatically to stabilize the osmotic concentration gradient."
Here are the following choices:
<span>A. The final urine output would increase greatly because of the increase in ADH-regulated water reabsorption.
<span>B. Aldosterone-regulated Na+ pump activity would increase dramatically to stabilize the osmotic concentration gradient.
</span>C. The increased solute concentration in the vasa recta would stimulate additional water reabsorption.
</span><span>D. The concentration gradient of the renal medulla would remain unaffected.</span>
