What is the ultimate source of electrons for noncyclic electron transport, and thus photosynthesis?
a. ATP
b. water
c. NADP+
d. oxygen
e. chlorophyll
b
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The protein(s) that facilitate the unfolding of chromatin fibers ahead of the replication fork is (are)
A) helicase. B) scaffold proteins. C) chromatin remodeling proteins. D) replisomal proteins. E) both choices A and B
Bikonts are characterized by having
a. two identical flagella. b. two different flagella. c. two types of nuclei. d. cells walls of chitin. e. cell walls of silica.
Besides the obvious fact that chemical mutagens are dangerous to handle, another major disadvantage to their use is that __________
A) most of these mutations are immediately lethal B) most chemically induced changes are detectable only by sequencing C) chemical mutagens activate transposons D) two or more generations of further matings are required to isolate them E) they alter all A-T and C-G base pairing
What technique can be used for studying the gene for cystic fibrosis?
What will be an ideal response?