Reduction of nitrogen-oxygen ions and compounds by some bacteria is called ________.
A. aerobic respiration
B. denitrification
C. deamination
D. nitrification
E. fermentation
Answer: B
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Many tropical ferns live on other plants without withdrawing nutrients from them. These ferns are said to be ____
a. epiphytes
b. bryophytes c. parasites d. pathogens e. saprophytes
Do you think that nonsubstance-related addictions, such as compulsive gambling or compulsive eating, have a greater
genetic or environmental component compared to substance-related additions, such as nicotine? Explain your reasoning. What will be an ideal response?
cPlasmodesmata of plant cells are functionally equivalent to __________ of animal cells
a. gap junctions b. dermatomes c. tight junctions d. cell surface receptors e. microvillus
Does the interpretation on the estimated coefficient on the treatment change if you use a proxy variable to control for a confounding factor?
A. Yes, the coefficient on the treatment is biased. B. Yes, the coefficient on the treatment suffers from the simultaneity bias. C. No, but instead of getting causal estimate you're only estimating partial correlations. D. No, the estimated coefficient is a consistent estimate of the causal effect.