High _________ denatures proteins and exposes their peptide bonds for enzymatic breakdown.
Fill in the blank(s) with the appropriate word(s).
acidity
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Most multivitamins should be taken with a meal for which reason?
A. to provide the energy needed to use the vitamins B. to help with the absorption of water-soluble vitamins C. to help with the absorption of fat-soluble vitamins D. to provide food for the vitamins to break down E. to provide the energy needed to synthesize more vitamins
Which statement is characteristic of endocrine glands?
a. They release chemical signals into synapses. b. They produce chemical signals that are always stimulatory. c. They are controlled by only negative feedback mechanisms. d. They secrete chemical signals in small amounts over short periods of time. e. Their activity is limited to brain tissue.
The increase of agricultural yields due to the development of high-yield varieties of crops and the use of modern cultivation methods is referred to as the ________
A) wonder crops B) crop revolution C) green revolution D) farm aid
Which of the following is a function of the human urinary system?
A) detoxification of waste products B) elimination of undigested foods C) regulation of water content for body fluids D) production of ammonia