Which of the following is true of anorexia
nervosa?
a. it is caused by environmental and genetic
factors combined
b. bones are weakened from loss of calcium
c. iron- deficiency anemia is common
d. hear muscle is weakened
e. all of these are true of anorexia nervosa
E
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Reactions that remove the equivalent of a water molecule when subunits are joined to make a larger
molecule are called ____ reactions.
a. equilibrium b. hydration c. hydrolysis d. redox e. dehydration synthesis
Why is an enzyme from a thermophilic bacterium used in PCR?
A. It is cheaper to obtain from live microorganisms than producing the enzyme in a lab. B. This thermohile's enzyme will synthesize DNA. C. The enzyme makes DNA that is more similar to human DNA. D. DNA is replicated at a high temperature that denatures most proteins.
Which of the following designations indicates a sex-linked trait?
A. XB B. A C. IA D. i E. a
As red blood cell components are recycled, the heme group is converted by the liver to ____
a. bilirubin b. bile c. iron d. proteins e. amino acids