Oral contraceptives work by _____.
A. changing the pH of the uterus so sperm cannot live
B. changing the temperature of the uterus so sperm cannot live
C. blocking the entrance to the uterus
D. killing sperm
E. preventing ovulation
Answer: E
Biology & Microbiology
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Inbreeding is primarily due to ____
a. gene flow b. nonrandom mating c. neutral mutations d. natural selection e. adaptive radiation
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Which word best describes the structure of the cell membrane?
A.) bi-layer B.) rigid C.) impermeable D.) nonpolar
Biology & Microbiology
Homo erectus was a very successful species. Describe the traits of this human ancestor.
What will be an ideal response?
Biology & Microbiology
Fungi and animals belong to the domain ________
Fill in the blank(s) with correct word
Biology & Microbiology