Which of the following exert bottom-up control?
A. a parasite that resides in a mammal's gut
B. a tertiary predator with fluctuating population size
C. levels of calcium and nitrogen in the soil
D. a disease-carrying protist
C. levels of calcium and nitrogen in the soil
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Archaea differ from Bacteria in all of the following EXCEPT
A. cell wall composition. B. plasma membrane make up. C. DNA replication. D. gene expression. E. the presence of a nucleoid region.
Homologous chromosomes undergo recombination during ____
a. prophase II b. metaphase I c. metaphase II d. both prophase I and II e. prophase I
Which of the following plant nutrients is
mismatched with its function?
a. nitrogen--component of nucleic acids b. phosphorous--component of proteins c. sulfur--component of chlorophyll d. iron--enzyme cofactor e. all of these plant nutrients are matched correctly with their functions
The cells that carry electric signals from one part of the body to another in the nervous system are ________
A) dendrites B) neurons C) effectors D) synapses