Which of the following is the term used to describe asexual reproduction in a single-celled organism?
(a) cytokinesis
(b) mitosis
(c) binary fission
(d) all of these are correct
Ans: (c) binary fission
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What homrone does the kidneys produce that stimulates red blood cell production in patients in renal failure or recoverying from chemotherapy?
a. Erythropoietin b. Aldosterone c. Adrenaline d. Renin
Which of the following is NOT an example of a good or service provided by plants that directly benefits human society?
A. discovery of new medicines B. horticultural therapy and stress relief C. dietary source of vitamins, minerals, and fiber D. source of oxygen and sink for carbon dioxide E. All of the above are benefits plants provide to human society.
Among animal populations, competition and disease.
a) are density-independent limiting factors b) prevent parasitism c) prevent predator-prey relationships d) are density-dependent limiting factors
In humans, digestion of starches begins in the
A. large intestine. B. mouth. C. duodenum. D. stomach. E. esophagus.