Which scenario describes a situation for which genetic counseling is recommended?
a. Couples who have no family history of genetic disorders
b. Women under age 35 who plan to become pregnant
c. Couples who already have a child with a birth defect
d. Couples who have undergone IVF
e. Women who have had one miscarriage, and no other pregnancies
c
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Most important biochemical reactions in an animal's body are catalyzed by enzymes. For each increase in temperature of 10oC, the rate of enzyme-catalyzed reactions
A. does not change. B. slows down by approximately 90%. C. slows down by approximately 50%. D. increases in rate approximately 2-3 fold. E. increases in rate by approximately 10 fold.
What pigment is responsible for the green color of plants? a. Amyloplast b. Chloroplast c. None of these choices
d. Chromoplast e. Chlorophyll
Over 99% of the water filtered through the glomerulus is reabsorbed. At which one of the following locations does most of this water reabsorption occur?
A) loop of Henle B) distal tubule C) collecting duct D) proximal tubule E) renal pelvis
Which of the following is a chemical reaction that is also known as digestion?
A. phosphorylation B. dehydration synthesis C. acid-base D. hydrolysis