Which portion of the brain contains centers for control of body temperature, appetite, and fat metabolism?
a. hypothalamus
b. cerebellum
c. midbrain
d. thalamus
e. pons
a
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The low molecular weight protein produced by animal cells in response to viral infections is
A. complement. B. lysozyme. C. histamine. D. interferon.
Each DNA nucleotide is made up of
a. a six-carbon sugar, a phosphate group, and one of twenty amino acids. b. a five-carbon sugar, a nitrogenous base, and one of twenty amino acids. c. a five-carbon sugar, a phosphate group, and one of four nitrogenous bases. d. a six-carbon sugar, a nitrogenous base, and one of four amino acids. e. a five-carbon sugar, a phosphate group, and one of four amino acids.
Movement in earthworms involves all the following
EXCEPT a. a hydrostatic skeleton. b. fluid-filled coelomic chambers. c. rigid skeletal elements. d. segments changing shape e. hydraulic pressure.
Which of the following groups of photosynthetic bacteria are capable of oxygenic photosynthesis?
A. The cyanobacteria B. The green bacteria C. The purple bacteria D. All of the choices are correct.