What hormone raises blood glucose levels?
A. Glucagon
B. Epinephrine
C. Glucocorticoids
D. Melatonin
E. Insulin
Answer: A
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Which statement best describes the concept of alternation of generations?
(a) One generation of plants is skipped every other year. (b) There are two phases, a sporophyte and a gametophyte. (c) The parental generation alternates with a juvenile generation. (d) A green sporophyte phase produces food for a nongreen gametophyte.
Why may you be asked whether you are allergic to eggs before receiving a vaccination?
a. Some viruses are grown and isolated in embryonated eggs; especially those used for vaccines. The egg proteins may still be present in the viral vaccine preparations. b. Some viruses used for vaccines are grown and isolated in embryonic eggs. Because of their growth in this environment, you may be allergic to the vaccine. c. You are asked about allergies as a precaution any time you receive a vaccine. d. This is an incorrect statement. You are usually never asked about allergies before receiving a vaccine.
Transpiration in plants requires _____
I) adhesion of water molecules to cellulose II) cohesion between water molecules III) evaporation of water molecules IV) active transport through xylem cells V) transport through tracheids A) I, III, IV, and V B) I, II, IV, and V C) I, II, III, and V D) I, II, III, and IV
What are the two main branches of prokaryotic evolution?
A. autotrophs and heterotrophs B. viruses and bacteria C. bacteria and archaea D. fungi and protists