Human development begins with fertilization, but the fertilized egg does not begin to divide until after it implants in the uterine wall

A. true
B. false


B

Biology & Microbiology

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Which mineral important for nerve cell

function and muscle contraction is stored in bone?

a. calcium b. phosphorous c. potassium d. sodium e. magnesium

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__________ regulates the maturation of the mammary glands, and then oxytocin causes __________. Fill in the blank(s) with the appropriate word(s)

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Enzyme activity may be affected by

a. temperature. b. the presence of chemicals that fit into allosteric sites. c. feedback inhibition. d. metabolic conditions in the cell. e. all of these.

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The saliva component that begins the breakdown of carbohydrates is ____

a. mucin b. salivary amylase c. water d. pepsin e. bicarbonate

Biology & Microbiology