The hormone ________, secreted by the ________, stimulates the production of red blood cells when the level of oxygen in the body decreases

Fill in the blank(s) with correct word


erythropoietin; kidney

Biology & Microbiology

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The outer membrane of the mitochondrion is not a significant permeability barrier because it contains transmembrane proteins called ________.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

The chemical structure of chlorophyll is based on a complex organic ring structure, a long

hydrophobic side chain and an atom of _________ in the center of the ring.

a. carbon b. manganese c. magnesium d. iron e. nitrogen

Biology & Microbiology

Which of the following happens when there are high levels of nitrogen and phosphorus in a lake or pond?

a. The growth of algae decreases significantly. b. The photic level gets deeper. c. The growth of algae increases significantly. d. Zooplankton populations increase.

Biology & Microbiology

What are some of the possible factors associated with aging?

What will be an ideal response?

Biology & Microbiology