Bacteria and protozoans are ____

a. multicellular organisms
b. unicellular organisms
c. both unicellular and multicellular organisms
d. the sole organisms of the oceans
e. precursors to cells


B

Biology & Microbiology

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The hormone that helps us respond to low oxygen levels by promoting an increase in red blood cell counts is

A. erythropoietin. B. hemopoeitin. C. renin-angiotensin. D. adrenocorticotropin. E. estradiol.

Biology & Microbiology

During the cleavage stage of glycolysis, fructose-1, 6 biphosphate is broken down into

A. two molecules of ATP. B. citric acid. C. two molecules of glyceraldehyde-3-phosphate. D. two molecules of pyruvate. E. glucose.

Biology & Microbiology

An empty stomach increases its secretion of ____ to stimulate the appetite

a. pepsinogen b. ghrelin c. gastric fluid d. chyme e. serosa

Biology & Microbiology

Prostaglandins may act as local signaling molecules in the uterus, causing ________

Fill in the blank(s) with correct word

Biology & Microbiology