Eukaryotic DNA methylation occurs on which base?
A. guanine
B. cytosine
C. thymine
D. adenine
E. thymine and adenine
B. cytosine
Biology & Microbiology
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What gland secretes fructose, which provides energy for sperm, into the seminal fluid?
a. prostate b. seminal vesicles c. bulbourethral d. vas deferens e. epididymus
Biology & Microbiology
Rarely, a chromosome's structure becomes altered when part of it undergoes __________,
__________, __________, or __________. Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology
Ozone in the atmosphere shields us from ________
Fill in the blank(s) with correct word
Biology & Microbiology
A pure culture contains
A. only one species of microorganism. B. only bacteria. C. a variety of microbes from one source. D. a variety of species from the same genus. E. None of the choices is correct
Biology & Microbiology