Why must tropomyosin cover the thin filament in just the right position before the muscle can relax?
A) It covers the myosin-binding sites and, if left exposed, will allow the myosin to bind and pull.
B) Without tropomyosin in the correct position, calcium cannot be released.
C) It is needed in the proper location, or ATP cannot be used.
D) It has a particular binding place that facilitates the removal of calcium.
A
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If genetic contribution to variation in a trait is negligible:
A. identical twins will be more similar to one another than fraternal twins are to one another. B. fraternal twins will be more similar to one another than identical twins are to one another. C. identical twins will be no more similar to one another than are fraternal twins. D. identical twins will be no more similar to one another than each is to any other sibling. E. None of these choices is correct.
________ is a beneficial relationship similar to mutualism, in which the relationship is not obligatory.
Fill in the blank(s) with the appropriate word(s).
Most of a living organism (approximately 98%) is made up of what three elements?
What will be an ideal response?
The enzyme responsible for breaking down alcohol
is a. alcohol methylase. b. alcohol polyphosphorylase. c. hydroxyl alcoholgenase. d. transmethylogenase. e. alcohol dehydrogenase.