A cellular organelle containing powerful digestive enzymes is a ribosome.
a. true
b. false
Answer: b. false
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Erythropoietin, a hormone that stimulates stem cells in the bone marrow to increase erythrocyte production, is
produced in the ____.
a. bone marrow b. heart c. kidneys
d. liver e. lymph nodes
Which of the following is an example of an organism’s niche?
a. a tortoise that lives on the African savannah eating grasses and living in deep burrows b. the thick mane of a male lion c. the camouflage coloration of zebras as they stand in the shade of acacia trees d. a flock of turkey vultures
__________ are animals with a backbone. Fill in the blank(s) with the appropriate word(s)
Which group of protists are unicellular, biflagellate stramenopiles that forms a significant portion of the
nanoplankton? a. ciliates b. red algae c. golden algae d. foraminifera e. brown algae