Mendel’s principle of segregation states that alternate forms of a gene separate during

A. fertilization
B. seed dispersal
C. cross?pollination
D. gamete formation


Answer: D. gamete formation

Biology & Microbiology

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Active transport involves _____

A) diffusion of solute through the lipid bilayer of a membrane B) pumping of solutes across the membrane C) production of adenosine triphosphate (ATP) D) transport of solute down a concentration gradient

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External signals, such as hormones and growth factors, can stimulate a cell to go through the cell cycle.

Answer the following statement true (T) or false (F)

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In addition to breaking down food, what other valuable function does stomach acid perform?

A) Stomach acid converts waste molecules into bile. B) Stomach acid recycles chlorine. C) Stomach acid activates enzymes in the small intestine. D) Stomach acid kills bacteria and other pathogens in food.

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Which of the following does NOT occur during the development of dental caries?

a. Streptococcus mutans uses dextran to attach to teeth and gums. a. Oral microflora produce high concentrations of exoenzymes when sucrose is present. b. Lactic acid dissolves calcium phosphate, causing decalcification of the tooth enamel. c. Oral biofilm microflora produce high concentrations of organic acids.

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