Insulin is a protein that is made up of 51 amino acids. It would have been translated from an mRNA transcript that had at least:
A) 1530 nucleotides.
B) 153 nucleotides.
C) 300 nucleotides.
D) 1153 nucleotides.
Answer: B) 153 nucleotides.
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Antimicrobial agents can target the cell wall by
A. digesting it. B. blocking its synthesis. C. denaturing proteins. D. All of the choices are correct.
After working several hours in a flower shop, you do not detect the smell of the roses. Why?
a. Sensory adaptation has occurred. b. Competing signal transduction pathways have been activated. c. Sensory perception has been blocked. d. Sensory summation has occurred. e. The nasal epithelium has become blocked
Life is thought to have evolved from complex molecules formed by the interaction of smaller molecules in oceans and the atmosphere. The substance which brought these molecules together to interact is
A. water. B. buffers. C. hydrogen. D. salts. E. acids.
The length of time it takes for the cells labeled during DNA synthesis to begin to enter mitosis is a good estimate of the length of the _______ phase(s).
a. G1 b. S c. G2 d. M