Which gland produces both aldosterone and cortisol?
a. hypothalamus
b. adrenal cortex
c. anterior pituitary
d. thyroid
e. pineal
ANSWER: b
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The purpose of adding liver extract in Ames test is:
A. Digest metabolites. B. Digest the tested compound to produce metabolites C. Digest mutagens. D. Digest carcinogens.
Which of the following serves as the "translator" or intermediary between an mRNA codon and an amino acid?
A. siRNA B. snRNA C. rRNA D. snRNPs E. tRNA
A human mother’s genes seem to influence brain development while a human father’s genes seem to influence growth. What does this imply?
A. The mother imprints her brain development genes and the father imprints his growth genes. B. The mother imprints her growth genes and the father imprints his brain development genes. C. Mothers and fathers both imprint brain development genes. D. Brain development genes are present in the mitochondria, while growth genes are present in the nucleus. E. Brain development genes are on the X chromosome and growth genes are on the Y chromosome.
The structure indicated by the letter "C" above represents ____
a. thin filament b. myofibril c. thick filament d. myofilament e. muscle fiber