Which of the following is not involved in the increase in blood volume in a pregnant woman?
A. renin-angiotensin-aldosterone mechanism
B. an increase in blood oxygen levels
C. artery expansion
D. progesterone
E. sodium and water retention
Answer: B
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Large external polysaccharides are degraded by bacteria and archaea using ________ ________, which they secrete outside the cell.
Fill in the blank(s) with the appropriate word(s).
In tropical seas, dinoflagellates are the most common source of ____________________, light produced by a living organism
Fill in the blank(s) with correct word
Primate dominance is achieved by ______________
a. fighting b. play c. contests d. all of these
When X-linked traits are recessive,
A. males who express the trait receive the recessive allele from their mothers. B. males who express the trait receive the recessive allele from their fathers. C. males who express the trait must receive recessive alleles from both parents. D. males who express the trait carry the recessive allele on their X chromosome. E. males who express the trait receive the recessive allele from their mothers and carry the recessive allele on their X chromosomes.