You are researching a family with a heritable disease whose symptoms include hyperflexible joints, pliable skin, stretchy ligaments, and fragile muscles that tear easily. You plan to use genetic testing to determine the cause of the disease. Which gene do you sequence first?
A. Epidermal growth factor
B. Actin
C. Myosin II heavy chain
D. Collagen
Answer: D
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The figure above illustrates a ____ reaction
that produces two _____ and a ____. a. condensation; hydroxyls; polymer b. condensation; water molecules; polymer c. cleavage; water molecules; monomer d. rearrangement; water molecules; polymer e. rearrangement; hydrogen ions; polymer
Asthenozoospermia is a medical condition that is characterized by reduced sperm motility. What structure of the sperm is likely affected in a man who has asthenozoospermia?
A) acrosome B) head C) middle piece D) flagellum
Which of the following is false about the lepromatous form of leprosy?
A) The lepromatous form is more common than the milder tuberculoid form. B) The lepromatous form causes irreversible tissue damage in the form of macules, papules, and nodules in many places on the body. C) The lepromatous form can spread to others. D) Without treatment, lepromatous leprosy is often fatal. E) The lepromatous form is more serious than the tuberculoid form.
Why is bird flu (H5N1) considered an emerging disease whereas HIV is not?
A. Bird flu (H5N1) is bacterial whereas HIV is viral. B. Bird flu (H5N1) has only been recognized in the past 20 years. C. Bird flu (H5N1) has not infected as many people as HIV. D. Bird flu (H5N1) has infected more people than HIV. E. Bird flu (H5N1) is more deadly than HIV.