The principle hormones produced by the thyroid gland are:. T3 (tri-iodothyronine) and T4 (thyroxine).
<h3>What is thyroid gland?</h3>
Thyroid gland is two globular structure present in the neck. This gland produce growth hormone. It is an endocrine gland.
The thyroid hormone helps in regulating the use of energy by the body. These hormones help in growth and development of the body.
Thus, the hormones are T3 (tri-iodothyronine) and T4 (thyroxine).
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Answer:
DNA nucleotides:
DNA is present as genetic material in all organism except some virus. The nucleotide of DNA consists of the nitrogenous base. The bases of DNA are adenine, guanine, thymine and cytosine. The phosphate group and deoxyribose pentose sugar is present in the DNA nucleotides.
RNA nucleotides:
RNA is present as genetic material in some viruses only. The nucleotide of RNA consists of nitrogenous bases are adenine, guanine, cytosine and uracil. The phosphate group and oxyribose pentose sugar is present in the nucleotide of RNA.
The answer to this question is communitcating for sure positively positive.
Answer:
B.hydrogen bonding within polypeptide strands
Explanation:
Alpha helix is one of the secondary structures formed by polypeptide chains. It is formed when the backbone of a polypeptide is wound around a longitudinal axis. The side chains of the amino acids are oriented outwards. Alpha helix structure is stabilized by the formation of a maximum number of hydrogen bonds between the amino acids of the chain. The hydrogen atom linked to the electronegative nitrogen atom of a peptide bond form hydrogen bond with the electronegative carbonyl oxygen atom of the fourth amino acid.
In this way, every peptide bond except the ones present close to each end of the helix take part in hydrogen bonding and stabilize the structure.
