Why are most plants green?
A) Chlorophyll a reflects green light.
B) Chlorophyll a absorbs green light.
C) Chlorophyll b primarily uses green light as the source of energy for photosynthesis.
D) Green helps plants blend into their environment as a sort of camouflage.
Answer: A
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What is the function of glial cells?
A) They carry messages. B) They protect and cushion the brain. C) They support neurons by supplying nutrients. D) They move waste products out of the brain.
Explain negative feedback control using thyroid hormones as an example
What will be an ideal response?
Reproduction in the black bread mold occurs between __________ hyphae
a. male and female b. + and ? c. dikaryotic and monokaryotic d. heterothallic and homothallic e. sterile and self-sterile
HIV is inactivated in the laboratory after a few minutes of sitting at room temperature, but the flu virus is still active after sitting for several hours. What are the practical consequences of these findings?
A) HIV can be transmitted more easily from person to person than the flu virus B) The flu virus can be transmitted more easily from person to person than HIV C) This property of HIV makes it more likely to be a pandemic than the flu virus D) Disinfecting surfaces is more important to reduce the spread of HIV than the flu