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White raven [17]
3 years ago
9

Write a scientific explanation that explains how oxygen and carbon dioxide travel within the seed and the egg.

Biology
1 answer:
svet-max [94.6K]3 years ago
6 0
The two membranes pull apart a little and create a small pocket or sack of air. As the developing bird grows, it breathes in oxygen from the air sack and exhales carbon dioxide. Several thousand microscopic pores all over the surface of the egg allow the CO2 to escape and fresh air to get in.

Please mark brainliest :)
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Answer/Explanation:

If a protein has a quaternary structure it is formed when many subunits get together. - true. The quaternary structure of a protein is the final stage in its assembly, when structures from multiple polypeptides come together, forming a multi-subunit protein (e.g. a dimer if 2, a trimer if 3 and so on)

Monomers form the secondary structure of proteins. - false, they form the tertiary structure

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The order of the amino acids is the primary structure of proteins.  - true. The amino acid sequence linked together by peptide bonds is the polypeptide sequence, which then forms increasingly complex structures when folded.

The tertiary structure of proteins is formed when the B sheets and alpha helices organize themselves into a more complex shape. - true. These complex structures can further interact with one another to form increasingly organized domains. The amino acid side chains possess different properties that form different bonds with one another.

The primary structure of proteins is formed from the amino groups on the proteins.  - false, the primary structure is formed by the sequence of amino acids in the chain, determined by the mRNA sequence from which the protein is synthesised.

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