Which theory about the cause of colony collapse disorder has no evidence?
a. that pathogens are the cause
b. that interference from cellphone towers is the cause
c. that pests are the cause
d. that drought is the cause
Ans: b. that interference from cellphone towers is the cause
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Which of the following best describes the chemical equation for photosynthesis?
A. Carbon dioxide + Sugar + Energy = Oxygen + Water B. Water + Carbon dioxide + Energy = Sugar + Oxygen C. Oxygen + Sugar = Water + Carbon dioxide + Energy D. Oxygen + Water + Carbon dioxide = Sugar + Energy
Other than predation by introduced Nile perch, the most likely explanation for the recent decline in cichlid species diversity in Lake Victoria is _____
A) reinforcement B) fusion C) stability D) polyploidy
Which of the following investigators was (were) responsible for the discovery that in DNA from any species, the amount of adenine equals the amount of thymine, and the amount of guanine equals the amount of cytosine?
a) Erwin Chargaff b) Alfred Hershey and Martha Chase c) Matthew Meselson and Franklin Stahl d) Oswald Avery, Maclyn McCarty, and Colin MacLeod
Resident biota (normal flora) of human beings include members of the
A) bacteria. B) arthropods. C) fungi. D) all of the above.