Which of the following correctly characterizes the F1 subunit of ATP synthase?
A. It is embedded in the inner mitochondrial
membrane.
B. It forms the channel through which protons
flow.
C. It is the catalytic unit that synthesizes ATP.
D. None of these answer options correctly
characterizes the F1 subunit of ATP
synthase.
C
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Hair and nails are keratin-rich structures formed by _____ tissue
a. muscle c. epithelial b. nervous d. connective
Which environment is ideal for plant cells, and which is best for animal cells?
a. isotonic for plant cells, and hypertonic for animal cells b. isotonic for plant cells, and hypotonic for animal cells c. hypotonic for plant cells, and isotonic for animal cells d. hypotonic for plant cells, and hypertonic for animal cells
A gene that can be masked by another gene is called
A. pleiotropy. B. dominant. C. incompletely dominant. D. recessive.
Species that live in the same geographical area are called sympatric.
Answer the following statement true (T) or false (F)