A type of molecule that helps certain enzymes function is a(n)
A. deactivator.
B. antibiotic.
C. vitamin.
D. All of these answers are true.
C. vitamin.
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Once a peptide has been formed between the amino acid attached to the tRNA in the P site and the amino acid associated with the tRNA in the A site, what occurs next?
A) translocation B) reading of the next codon of mRNA C) initiation D) The codon-anticodon hydrogen bonds holding the tRNA in the A site are broken.
Imagine you have radioactively labeled a protein in the lumen of the endoplasmic reticulum. Where would you predict the labeled protein might end up?
A. in the lumen of the Golgi apparatus B. in the lumen of a vesicle C. outside the cell D. All of the answer options are correct.
Which of the following statements is correct?
A. None of the answer options is correct. B. The posterior pituitary gland develops from epithelial cells. C. Both the anterior and posterior pituitary glands release tropic hormones. D. Neurosecretory cells of the hypothalamus extend axons to the anterior pituitary gland. E. The posterior pituitary gland produces more types of hormones than the anterior pituitary gland.
The most common nationally notifiable infectious disease in the United States is:
A) chlamydial genital infections. B) gonorrhea. C) the common cold. D) tuberculosis.