A diaphragm is a shallow, dome-shaped rubber disk with a flexible rim that fits within the vagina and covers the cervix. If it is used without a spermicide, how will it act as a contraceptive to prevent pregnancy?
A. It would prevent sperm from reaching the egg.
B. It would prevent ovulation.
C. It would cause the embryo to die.
D. It would prevent implantation on the uterine wall.
E. It would kill the sperm.
A. It would prevent sperm from reaching the egg.
You might also like to view...
Which substance can easily cross the human blood brain barrier in a healthy individual?
a. viral proteins b. bacterial DNA c. human white blood cells d. cortisol e. albumin
Which of the following molecules forms the coat during receptor-mediated endocytosis-coated pit formation?
A) mannose-6-phosphate B) T-SNARE C) clathrin D) tethering protein E) caveolin
Physical and chemical antimicrobial agents can target all but which of the following?
A) Protein function B) Cell membrane integrity C) DNA replication D) Capsule formation E) Cell wall synthesis
Imagine you start a population of 1 million bacteria from a single bacterial cell. Now imagine that a population this large is started from a male and female housefly. How would these two populations differ?
A) The cells of the bacterial population would be larger on average than the cells that make up the houseflies. B) The cells of the bacterial population would differ genetically from each other much more than would individuals of the housefly population. C) No cells of the housefly population would ever divide by meiosis, but some cells of the bacterial population would divide by meiosis. D) Individuals of the housefly population would differ genetically from each other much more than would cells of the bacterial population. E) No cells of the bacterial population would ever divide by binary fission, but some cells of the housefly population would divide by binary fission.