Define enzymes
What will be an ideal response?
Protein molecules that speed chemical reactions in the body.
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Which of the following is true concerning the rate-limiting step in a metabolic pathway?
A. It is likely to be the fastest reaction in the pathway, and it is always the last step in a metabolic pathway. B. It is likely to be the fastest reaction in the pathway, and it may be subject to end-product inhibition. C. It is always the first step in the pathway, and may be subject to end-product inhibition. D. It is likely to be the slowest reaction in the pathway, and it is always the last step in a metabolic pathway. E. It is likely to be the slowest reaction in the pathway, and it may be subject to end-product inhibition.
The ________ will evert the foot.
A. fibularis muscles B. gastrocnemius C. extensor digitorum longus D. tibialis anterior
The blastocyst consists of the ________.
A. blastocyst and amnion B. chorion and inner cell mass C. morula and placenta D. embryo and chorion
Cross-cultural research shows that sexual identity, as a lifelong characteristic of the self, is:
A. rare or unknown in some cultures. B. is the norm among all cultures. C. determined prenatally. D. finalized only in middle adulthood in some cultures.