You are talking to a 54-year-old patient who has joint pain. As the attending physician, you order a scan to look at the cartilage in the patient's painful joints because you suspect that cartilage has worn away, leading to
A. acromegaly.
B. rheumatoid arthritis.
C. scoliosis.
D. osteoporosis.
E. osteoarthritis.
E. osteoarthritis.
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G proteins are inactivated when ____
a. GDP is converted to GTP b. GTP is converted to GDP c. the G protein rebinds the receptor d. the G protein is released from the receptor e. the receptor is broken down
Were guppies present in every pond?
a. yes b. no
In what ways are bacteria beneficial to humans?
What will be an ideal response?
Many worker bees give their lives to save a bee hive from an attack by bears or other animals. In such cases, we now know that
A. each female worker is waiting to get her chance to reproduce. B. this is a case of bees consciously understanding the need to preserve the nest for their individual benefit-they might survive if all work together. C. These worker bees will have a reproductive benefit if the members of the hive survive. D. this is a case of sexual selection.