Explain the function of ATP in muscle contractions
What will be an ideal response?
ATP binds to the myosin heads, allowing the myosin heads to disengage from the actin. The myosin heads split the ATP molecules and store the energy, which allows the myosin heads to swivel in preparation to form the cross-bridges.
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In photosynthesis, carbon fixation occurs:
A. in photosystem I B. in the electron transport chain C. in photosystem II D. in the Calvin cycle E. during photorespiration
In which paleoanthropological site do we find the largest single group of ancient Homo fossils (approximately 30 individuals)?
Turner’s syndrome individuals have how many chromosomes?
a. 23 b. 24 c. 45 d. 46 e. 47
The three-dimensional shape of a protein is determined by the ____ and the results of chemical modifications and
other processing events. a. interaction of R groups b. interaction with other polypeptide chains c. amino acid sequence d. bonds formed with other proteins e. initiation complex