Which type of organisms should evolve the most rigid enzymes?
a. Desert organisms
b. Nocturnal organisms
c. Aquatic organisms
d. Polar organisms
e. I don't know the answer
Answer: a. Desert organisms
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In human development, early divisions of the embryo are contained within the egg's outer membrane and thus upon each division, egg cytoplasm is partitioned into smaller and smaller cells which form the morula
A. true B. false
Image formation requires information about
__________ visual stimuli in addition to photoreceptors. a. the positions of b. the shapes of c. the brightness of d. the movements of e. all of these
One of Chargaff's rules states that
A. A = G and T = C. B. A = T + G + C. C. A = C and T = G. D. A = T and G = C.
A ________ is a piece of extrachromosomal DNA that has its own replication origin.
Fill in the blank(s) with the appropriate word(s).