One of your best friends loves to run long distances. You ask her what she enjoys about running. In addition to good physical fitness, she tells you that after a run she feels extra happy
You suspect that her joy might be related to increased production of ________ by the anterior pituitary gland. A) endorphins
B) releasing hormones
C) prolactin
D) adrenalin
A
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Knowledge of a pathogen's genome is useful because:
A. It allows scientists to cause mutations in the DNA thereby killing the pathogen. B. It allows scientists to prevent meiosis and the duplication of genes necessary for the survival of the pathogen. C. It allows developing drugs that make antibodies against the pathogen. D. It allows developing drugs that target metabolic pathways unique to the pathogen. E. none of the choices provided
A couple has three children, two of which have blonde hair. The third child and both parents have dark hair. What can be determined about the gene for hair color in this family?
a. Blonde hair color is an autosomal recessive trait. b. Blonde hair color is an autosomal dominant trait. c. Blonde hair color is a sex-linked dominant trait. d. Blonde hair color conveys a lethal mutation.
Living cells are required for culturing viruses because
A) viruses are technically nonliving. B) viruses require host cell genetic machinery to replicate. C) viruses are obligate intracellular parasites. D) All of the choices are correct.
Which of the following cannot be found in a chloroplast?
What will be an ideal response?