3 years ago

Eubacteria have in their cell walls.

1 answer:

mihalych1998 [28]3 years ago

3 0

Answer:

Eubacteria are enclosed by a cell wall. The wall is made of cross-linked chains of peptidoglycan, a polymer that combines both amino acid and sugar chains. The network structure gives the wall the strength it needs to maintain its size and shape in the face of changing chemical and osmotic differences outside the cell.

Explanation:

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Compare the methods of gas exchange in adult amphibians to gas exchange in reptiles.

notka56 [123]

Answer:

Sample Response: Adult amphibians have lungs for gas exchange. However, gas exchange may also occur through the skin and lining of the mouth. Because their skin is dry and scaly, reptiles cannot exchange gases through their skin. They breathe entirely with lungs.

Explanation:

the answer on edgenunity

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3 years ago

Chromatin modifications that tend to inhibit transcription include:

Masteriza [31]

Answer:

a. methylation at lysine 9 or 27 of histone H3.

Explanation:

Methylation causes the switching off of genes using steric hinderance to prevent access to DNA.

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3 years ago