The nuclear envelope is composed of ________
A) chromatin
B) DNA
C) a double membrane
D) carbohydrates
C
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Based on the phylogenetic tree below, which of the following statements is FALSE?
A) Species E is more closely related to species A than to species D. B) Species D is more closely related to species C than to species E. C) Species F is more closely related to species D than to species E. D) Species C is more closely related to species B than to species D.
Which of the following is not an essential component of the bacterial initiation stage of translation?
A. mRNA B. IF-2 C. ATP D. N-formylmethionyl-tRNAfMet
Which of the following groups of photosynthetic bacteria are capable of oxygenic photosynthesis?
A. The cyanobacteria B. The green bacteria C. The purple bacteria D. All of the choices are correct.
Which organ that is a target of insulin plays the most significant role in regulating sugar levels in circulation?
A) kidneys B) liver C) stomach D) pituitary E) adrenal glands