Nutrients and antibodies move across the placenta from mother to embryo or fetus, as do __________, which can
cause birth defects. Fill in the blank(s) with the appropriate word(s).
ANSWER: teratogens
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The primary role of bile salts during digestion is ____
a. osmoregulation b. to kill bacteria that may have been consumed c. to coat fat droplets and separate them into small droplets d. to drive the enzymatic digestion of fats e. to drive the enzymatic digestion of proteins
Any substance that when dissolved in water will give off H+ ions is referred to as a(n) ________
A) pH B) buffer C) catalyst D) acid
Damage to ________ greatly reduces a cell's ability to repair DNA during DNA replication
A) mutator genes B) proto-oncogenes C) repair genes D) structural genes E) somatic genes
Which of the following is correctly paired with its structure and function?
A) sclerenchyma — supporting cells with thick secondary walls B) ground meristem — protective coat of woody stems and roots C) guard cells — waterproof ring of cells surrounding the central stele in roots D) periderm — parenchyma cells functioning in photosynthesis in leaves