Green and red algae are distinguished from protozoa because the algae
a. can be multicellular.
b. cannot undergo photosynthesis and are never multicellular.
c. undergo photosynthesis.
d. undergo photosynthesis and can be multicellular.
Answer: D
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Chromosomal aberrations can be produced by
exposure to a. viruses. b. radiation. c. various chemicals. d. viruses and radiation only. e. viruses, radiation, and various chemicals
After estimating a logit model for the likelihood of a website visitor clicking through conditional on if the visit occurred on a weekday or not, you get the following results: ClickThroughi = -1.2(0.4) + 0.8(0.2)WeekDayi, where standard errors are reported in parenthesis. What would be the calculation that yields the marginal effect of a visit moving from a weekend to a weekday on click-throughs?
A. 0.8
B. 
- 
C. 
D. -1.2 + 0.8 = -0.4
If the DNA from a crime scene matches a suspect’s DNA at four different loci, what should be
concluded if the DNA does not match the suspect’s DNA at a fifth locus?
What will be an ideal response?In C4 plants, which of the following events of
photosyntesis takes place first?
a. carbon from carbon dioxide is fixed by an enzyme that does not use oxygen b. carbon from carbon dioxide is fixed by rubisco c. glucose is produced d. glucose is converted into sucrose e. RuBP splits into two PGA molecules