Which of the following statements are correct? I) Hormones often regulate homeostasis through antagonistic functions. II) Hormones of the same chemical class usually have the same function
III) Hormones are secreted by specialized cells usually located in exocrine glands. IV) Hormones are often regulated through feedback loops. A) only II and III
B) only I and III
C) only III and IV
D) only I and IV
D
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Explain why a hyperthermophile is unlikely to be a human pathogen
What will be an ideal response?
How many different chromosomal combinations can occur as a result of meiosis?
a. 8,388,608 b. 3,450,000 c. 5,450,750 d. 2,000,000 e. 6,600,980
The percentage of twins being born has increased in the past 20 years because of:
a. the increased use of fertility inducing drugs. b. increases in hospital care. c. the desire of more couples to have twins. d. the increased use of thalidomide. e. the increased incidence of German measles.
What is the result of the insertion or deletion of a single base in the coding sequence?
a. frameshift b. an unidentified reading frame c. a new open reading frame d. a silent mutation e. a neutral mutation