How many carbon dioxide molecules are released on each turn of the citric acid cycle?
a. Two
b. Eight
c. Four
d. Three
a. Two
Two carbon dioxide molecules are released on each turn of the citric acid cycle.
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The white cliffs of Dover are composed mostly of foraminiferans shells. These organisms move by pseudopodia and feed by phagocytosis. Foraminiferan shells are made of which of the following?
a. Cellulose b. Calcium carbonate c. Chitin d. Peptidoglycan e. Silica
A group of similar cells that perform a particular function is called.
a) an organ system b) an organ c) an organism d) a tissue
The location of translation in prokaryotic cells is
A. on ribosomes. B. on the plasma membrane. C. on mesosomes. D. on chromosomes E. in the nucleoid.
The ________ of a virion determines the type of cell it enters
A) nucleic acid B) matrix proteins C) glycoproteins D) lipid molecules E) shape