Infection with the HIV virus occurs through
A) sharing eating utensils.
B) airborne droplets from coughs and sneezes.
C) intimate contact with an infected person's body fluids.
D) casual contact with an infected individual.
E) sharing clothes with an infected individual.
Answer: C
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Relaxin is a hormone produced by the placenta and ovaries. The function of this hormone is to ________
A) ensure the implantation of the blastula B) block the pain of childbirth C) prevent morning sickness D) relax the pubic symphysis
Thyroxin and triiodothyronine, hormones necessary for cell metabolism, are produced in the ________ gland
A) Adrenal B) Pituitary C) Thyroid D) Thymus
The most posterior chamber of the heart is the
A. right atrium. B. right ventricle. C. left atrium. D. left ventricle.
MicroRNAs
A. are 21 or 22 bases long. B. are noncoding RNAs. C. control gene expression. D. All of these answer choices are correct.