Which of the following causes DNA to wrap tightly
around histones essentially preventing transcription?
a. methylation
b. acetyl CoA
c. nitrogenation
d. dehydration
e. carbonation
Answer: a
Biology & Microbiology
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The process by which successful traits become more common in subsequent generations is called ____
a. speciation b. mutation c. natural selection d. genetic drift
e. gene flow
Biology & Microbiology
The internal membrane structure of the
cyanobacteria indicates that they may have been the forerunners of a. eukaryotic cells. b. chloroplasts. c. mitochondria. d. endoplasmic reticula. e. ribosomes.
Biology & Microbiology
The larva in Figure 31-4 is characteristic of:
A. arthropods.
B. mollusks.
C. cnidarians.
D. platyhelminths.
E. nematodes.
Biology & Microbiology
Water is most dense at 4 C
__________________ Indicate whether the statement is true or false.
Biology & Microbiology