The adrenal cortex releases ________, which stimulates the kidney to take up extra sodium ions.
A. aldosterone
B. epinephrine
C. ADH
D. glucose
Answer: A
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Your brother mentions that several days ago he began to feel as if he was coming down with a cold, but now is no longer experiencing any signs or symptoms and feels fine. Having just studied the infectious disease process in your microbiology course, you immediately recognize that he is describing the ________ phase of illness.
A. convalescent B. acute C. prodromal D. incubation
In the section "Investigating Life: Birds Do, Bees Do It", bumblebees pollinated M. lewisii, whereas hummingbirds preferred the red-flowered M. cardinalis. If a hummingbird carries M. cardinalis pollen to M. lewisii, the resulting hybrid offspring are viable. M. lewisii and M. cardinalis are different species because of
A. post-zygotic barriers to reproduction. B. pre-zygotic barriers to reproduction. C. punctuated equilibrium. D. gradualism. E. asexual reproduction.
Scientists sometimes use gene sequencing to establish a family tree. A family tree shows the evolutionary relationship between various species. The fewer the differences that are present in the genetic makeup between two species, the closer their evolutionary relationship. What type of evidence does gene sequencing represent?
A) comparative embryology B) identification of a common ancestor C) molecular biology D) comparative anatomy
developmental response
What will be an ideal response?