A study of a cohort of 1,000 animals showed a
90 percent death rate per individual in the first
year, 10 percent the second year, and 5 percent
the third year. This population's survivorship is
a. type I.
b. type II.
c. type III.
d. type I the first year and type II in years two
and three.
e. type I the first year, type II the second year,
and type III the third year
C
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Which of the following are involved in coating Staphylococcus with host proteins?
A. clumping factor B. coagulase C. protein A D. leukocidin E. clumping factor, coagulase AND protein A
Crowding ____
a. has a positive effect on reproduction b. decreases the growth rate of individuals c. only occurs in plant species d. causes immigration e. stimulates developmental and behavioral changes
Which of the following is true of steroids?
A) Steroids are polymers. B) If people inject male steroid hormones, they can build muscle mass with no side effects. C) Some amino acids are steroids. D) Steroids exist naturally in humans as hormones. E) Steroids contain a central, single-ring carbon structure.
Susie is not color-blind, but she transmitted a color-blindness gene to her son. She is said to be a _______ of the color blindness gene.
Fill in the blank(s) with the appropriate word(s).