The rate of a reaction occurring in the absence of its enzyme is one molecule of product made per second. Which of the following is likely in the presence of its enzyme?
A. One molecule per ten minutes
B. No change to the rate of the reaction
C. One molecule per minute
D. One hundred molecules per minute
Answer: D
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How is muscle contraction regulated by tropomyosin and troponin?
Fill in the blank(s) with the appropriate word(s).
Answer the following statements true (T) or false (F)
1. The basal nuclei modify voluntary motor patterns. 2. The hypothalamus initiates voluntary motor activity. 3 The cerebral cortex controls simple cranial reflexes. 4. The pons and superior medulla oblongata control balance reflexes. 5. The hypothalamus controls motor patterns related to eating.
Vocal folds that prevent foreign objects from entering the glottis are known as the ________.
Fill in the blank(s) with the appropriate word(s).
The movement of organic molecules, electrolytes, minerals, and water across the digestive epithelium into interstitial fluid is known as
A) peristalsis. B) absorption. C) compaction. D) ingestion. E) filtration.