Parietal cells secrete pepsinogen. Indicate whether the statement is true or false


False - Chief

Biology & Microbiology

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Detritivores are

a. bacteria. b. plants. c. fungi. d. animals. e. both bacteria and fungi.

Biology & Microbiology

DDT was first used as an insecticide in 1942. Resistance genes existed before this time in houseflies and other insects. By 1970, no farmer would bother using this chemical. Why?

What will be an ideal response?

Biology & Microbiology

Presently, it is thought that organic polymers may have formed and accumulated on:

a. silt and sand. b. sand and mud. c. rocks and clay. d. water and shells. e. sand and heavy metals.

Biology & Microbiology

Which of the following controls the temperature in endothermic animals?

A) Reflexive skeletal muscles B) Autonomic nervous system C) Cerebral cortex D) Positive feedback systems E) Hypothalamus

Biology & Microbiology