The two forms of energy that have the least impact on the environment are Wind and Solar energy. Both of this energies are clean and renewable. Not only that but they produce no emissions and result in cleaner air and water for all.

Answer: Wind, Solar

I hope it helps, Regards.

5 0

4 years ago

Peptidoglycan is a polymer of millions of N-acetylglucosamine (NAG) and N-acetylmuramic acid (NAM) sugars based on glucose molec

padilas [110]

Answer:

d) short amino acid chains, NAG, NAM, and some lipid proteins

Explanation:

Bacterial cell walls are made up of a rigid layer that is responsible for the resistance of the cell wall. This layer is called Peptidoglycan.

The basic structure of peptidoglycan is:

- A long chain of sugar derivatives, N-acetylglucosamine (NAG) and N-acetylmuramic acid (NAM). These two sugars are linked together by glycosidic bonds. Although these links are strong and make up the structural backbone, they are not sufficient to give the wall rigidity.

- The amino acids (L-alanine, D-alanine, D-glutamic, and Lysin) play an important role as peptide bridges that cross-braced the chains, joining the N-acetylmuramic molecules (NAM) together, giving greater rigidity to the structure.

Lipid proteins embedded in the wall with structure functions can also be found in the cell wall.

4 0

4 years ago

7. An example of artificial selection is:

Vika [28.1K]

Answer:

The fourth option.

Explanation:

Well, it's correct

8 0

3 years ago

What happens on a cladogram as you move farther away from the base (and closer to the tips)?

nikitadnepr [17]

As you move farther away from the base, the genetic similarities between the base and the organism decreases. As you move closer to the base, the organisms get more similar.

7 0

3 years ago