Epstein-Barr virus may become latent in
A. red blood cells.
B. T cells.
C. nerve cells.
D. B cells.
D
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The surface area of the inner mitochondrial membrane is greatly increased by ____
a. cristae b. the matrix c. centrioles d. nucleoli e. microfilaments
Recently discovered fossils reveal that many dinosaurian ancestors of birds had ____
a. boneless tails b. toothless mouths c. enlarged forelimbs d. wings e. feathers
In cancer cells, how are promoter regions silenced?
a. Histone acetylation makes DNA inaccessible. b. Repressors bind to the promoter region making it inaccessible to RNA polymerase. c. Methylation of cytosine DNA residues in CpG islands silences promoter regions. d. Promoters are excised by exonuclease.
The occupation of space by a sessile organism, such as a barnacle, that precludes the establishment or occupation by another species is referred to as
A) preemptive competition. B) consumption competition. C) overgrowth competition. D) encounter competition.