The reptiles, which include lizards, snakes, alligators, crocodiles, turtles, and birds, evolved from the _____.
A) reptiles.
B) amphibians.
C) vertebrates.
D) both A and C
E) both B and C
Ans: B) amphibians.
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Mendel's famous experiments were done using which plant?
A. Corn maize. B. Pea plants C. Tomato plants D. Artichokes
Efficiently translated mRNAs tend to be stable in the cytoplasm; those that are poorly translated tend tobe rapidly degraded. Which of the following is not a step in the pathway for mRNA degradation?
A. targeting of upstream ORFs for nuclease binding B. removal of the poly(A) tail C. removal of the 5' 7-meG cap D. binding of mRNA by 5'-3' and 3'-5' RNA exonucleases
Red blood cells, also known as __________, contain the hemoglobin that functions in rapid transport of oxygen. Fill in the blank(s) with the appropriate word(s)
Which of the following extraembryonic membranes
forms fingerlike projections that become part of the placenta? a. amnion b. yolk sac c. chorion d. allantois e. none of these