It differs from DNA chemically in two respects: (1) the nucleotides in RNAare ribonucleotides—that is, they contain the sugar ribose (hence the name ribonucleic acid) rather than deoxyribose; (2) although, like DNA,RNA contains the bases adenine (A), guanine (G), and cytosine (C), it contains the base uracil (U) .
Protein folding is determined by a variety of factors, from the amino acid composition all the way through to primary, secondary and tertiary structures of the proteins. Proteins fold in water environments, and how they fold is determined by the hydrophobicity, hydrophilicity and charge of amino acids. Amino acids that are hydrophobic will face away from water environments, while hydrophilic amino acids will face towards water environments. This gives rise to primary and secondary structures such as alpha-helices and beta-sheets. Among these are a variety of structures that form the tertiary structures. The different types of amino acids play an essential role in this, as they are the building blocks of proteins and can affect the structures of proteins because of their charge and affinity for water.
Answer:
A. makes more copies of a sample of DNA
Answer:
The correct answer is "The eggs must have internal membranes".
Explanation:
Amniotes are animals that have adapted to reproduce putting eggs on land (reptiles, birds or mammals). The eggs of amniotes have internal membranes that let gases but not water pass through. This characteristics allows the embryo to breath inside the egg, and allow the egg to not dry out on land. Therefore, the eggs of the new species of animal must have internal membranes in order to allow its reproduction on land.
Answer:
interaction between two different organisms living in close physical association, typically to the advantage of both.
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