The hormone produced by the kidney that is responsible for stimulation of the production of red blood
cells is
a. erythropoietin.
b. angiotensin.
c. renin.
d. aldosterone.
e. cortisol.
A
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The development of multicellular organisms likely originated from ____
a. colonies of unicellular organisms of the same species b. endocytosis of other cells followed by mitosis c. cooperation between different species of cells d. colonies of numerous species of cells e. endosymbiotic eukaryotes
Metarterioles directly link arterioles with venules
____________________ Indicate whether the statement is true or false.
Based on Berthold's methods, how do researchers today determine a tissue to be endocrine in nature? What will be an ideal response?
Penicillin is an antibiotic that inhibits enzymes from catalyzing the synthesis of peptidoglycan, so which prokaryotes should be most vulnerable to inhibition by penicillin?
a) gram-positive bacteria b) archaea c) mycoplasmas d) gram-negative bacteria e) endospore-bearing bacteria