Which group is most distantly related to green algae?
A. Ciliates
B. Dinoflagellates
C. Diplomonads
D. Apicomplexans
E. Diatoms
Answer: C
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The function of “A” is to
a. digest the endosperm. b. protect new leaves as the seedling grows through soil. c. secrete hormones that cause flowering. d. absorb pheromones secreted by other seedlings. e. do none of these.
A tRNA with the anticodon sequence 5? IUC 3? will not normally exist because
A) 5? GAU 3? and 5? GAC 3? specify asparagine, but 5? GAA 3? specifies glutamic acid. B) 5? GAU 3? and 5? GAC 3? specify different amino acids. C) I is not a base present in tRNAs. D) 5? GAU 3? and 5? GAC 3? both specify asparagine.
Human cells produce perhaps as many as 100,000 different proteins, and yet the human genome has
only about 20,000 genes. This is best explained by
a. aminoacylation. b. exon shuffling. c. the wobble hypothesis. d. degeneracy. e. alternative splicing.
_____ is an example of reproductive cloning
a. Somatic cell nuclear transfer (SCNT) b. Multiple offspring from the same pregnancy c. Artificial embryo splitting d. [Somatic cell nuclear transfer (SCNT)] and [Artificial embryo splitting] e. All of these