Endoplasmic reticula are an extension of what
other cellular structure?
a. the cytoskeleton
b. flagella
c. cilia
d. the nuclear envelope
e. the plasma membrane
D
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Which of the following variables is the coefficient that estimates decomposition rate?
A) e B) k C) t D) d
How would a mutation allowing a heterocyte to synthesize more chlorophyll affect the process of nitrogen fixation?
A. There will be a decrease in the amount of ammonia converted to nitrogen gas. B. There will be no effect because photosynthesis and nitrogen fixation are not directly related. C. There will be an increase in the amount of nitrogen gas converted to ammonia. D. There will be an increase in the amount of ammonia converted to nitrogen gas. E. There will be a decrease in the amount of nitrogen gas converted to ammonia.
Which one of the following expressions from the logistic equation (dN/dt) = rN ((K - N)/K) represents the proportion of unused resources remaining for use by the population?
A. (K - N)/K B. The biotic potential (rN) C. The population size (N) D. The growth rate (dN/dt) E. The carrying capacity (K)
Nucleoli are present during _____.
Fill in the blank(s) with the appropriate word(s).