Which term refers to physiological changes in ectotherms, known to occur when they get used to temperature rising in the summer?
a. estivation
b. thermal acclimatization
c. hypothermia
d. hyperthermia
Answer: b. thermal acclimatization
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What are desirable characteristics for a gas exchange surface, such as the endothelial cells lining the inside of lung? Select all correct choices
A. a large surface area B. a small surface area C. a thickness of 100 micrometers D. a thickness under 10 micrometers
Based on composition similarities, actin can be divided into two major groups: the muscle-specific actins (________-actin) and nonmuscle actins (________- and ________-actin)
Fill in the blank with correct word.
Which of the following is characteristic of gymnosperms?
a. The gametophyte generation is dominant. b. They are wind pollinated. c. They are more diverse than the angiosperms. d. They are water pollinated. e. All of the above are correct.
Chlamydia trachomatis causes
A. ocular trachoma. B. nongonococcal urethritis (NGU) in males. C. congenital and adult inclusion conjunctivitis. D. cervicitis in females. E. All of the choices are correct.