Which of these molecules acts as an ATPase, breaking down ATP to perform its function in muscle contraction?
A. actin
B. myosin
C. calcium
D. tropomyosin
E. troponin
Answer: B
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Construct a chart to show at least five major differences between the cytoplasmic membrane and cell wall of bacteria and archaea. What are the implications of these differences?
What will be an ideal response?
Select that statement that reflects evidence that directly supports the endosymbiotic theory.
A. Lysosomes contain their own DNA in the form of plasmids. B. The electron transport system is located in the cell membrane in bacteria, while in eukaryotes it is located in the mitochondrial cristae. C. Enzymes for photosynthesis are found embedded in membranes of the Golgi apparatus. D. Glycolysis occurs in the cytoplasm of bacterial cells.
Regenerating ____ allows glycolysis in
fermentation to continue.
a. NADH b. ATP c. carbon dioxide d. pyruvate e. glucose
The pH of human blood falls within a ________ range that is near a pH of 7.4
Fill in the blank(s) with correct word