Of the following, which is the first explanation
of a problem? (It is sometimes called an
"educated guess.")
a. principle
b. law
c. theory
d. fact
e. hypothesis
E
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Sperm cells mature and are stored within human males in the _____
A) urethra B) prostate C) epididymis D) seminal vesicles E) bulbourethral gland
During which phase of meiosis does the nuclear envelope break down?
a. prophase I and II b. metaphase I and II c. anaphase I and II d. telophase I and II
Brown and Goldstein discovered the mechanism of cholesterol uptake by studying fibroblasts from children with which disease?
a. Chronic fatigue syndrome b. Familial hypercholesterolemia c. Lupus erythematosis d. Cystic fibrosis
Which of the following genera of the Planctomycetales have a stalk as part of their mechanism for attachment to surfaces?
A. Gemmata B. Planctomyces C. Priullela D. All of the choices are correct.