The contraceptive pill works by
1.causing the endometrium to break down
2.preventing fertilization
3.preventing implantation of a fertilized egg
4.preventing ovulation
4
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The sterile portions of a flower are the
a. petals and pistils. b. petals and sepals. c. petals and carpels. d. sepals and carpels
Which particle is able to freely cross the plasma membrane?
a. Na+ b. Clc. oxygen d. glucose e. amino acids
Which of the following correctly describes the evolution of roaches who were resistant to Combat®?
a. The roach bait caused individuals that preferred the bait to evolve a dislike for it. b. The roach bait made the population of roaches more evolved to dislike the bait. c. The roach bait acted as a force of natural selection to create mutations that disliked the bait. d. The roach bait caused the population to evolve by selecting against roaches that preferred the bait. e. The roach bait evolved the roaches that liked the bait to become roaches that disliked the bait.
You have been asked to explain to a high school class the first law of thermodynamics and how this law affects the students' lives. Using your own words, describe the first law of thermodynamics, and give an example (other than the examples described in
the chapter). What will be an ideal response?