Which of the following statements is false?
A) Translation consists of initiation, elongation, and termination.
B) During polypeptide initiation, an mRNA molecule, the first amino acid attached to its tRNA, and the two subunits of a ribosome are brought together.
C) The start codon can be different depending on what kind of protein is to be translated.
D) During the first step of initiation, an mRNA molecule binds to a small ribosomal subunit.
Answer: C
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A patient is waiting for a kidney transplant. In order for the transplant to be successful, the donated kidney (the graft) must "match" with the recipient. What has to "match" between the donor and the recipient?
Why is matching tissue more difficult than matching blood types? What will be an ideal response?
A Ramachandran plot shows the sterically limited rotational domains:
A. between proline and noncylic amino acids. B. between polar and nonpolar R groups. C. of an R group with respect to the neighboring R groups. D. of an R group with respect to the polypeptide backbone. E. that two polypeptide chains can occupy.
Genetic information carried by a(n) __________ directs the synthesis of a __________ chain during
translation. Fill in the blank(s) with the appropriate word(s).
The vessels in our circulatory system that allow molecules to diffuse across their walls to tissues are
A. arteries. B. lymph vessels. C. veins. D. capillaries. E. venules.