A woman (the mother) who has blood type A, has a daughter who is type O and a son who is type B. What is the genotype of the mother?
A. IAIA
B. IBIB
C. ii
D. IAi
Answer: D. IAi
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This procedure involves the cutting and tying off of the oviducts.
A. tubal ligation B. vasectomy C. C-section D. contraception
A cell is exposed to a substance that prevents it from dividing. The cell becomes larger and larger. This situation
A) should present no problem to the cell, since it can continue to perform all other necessary functions.
B) should present no problem to the cell, because the surface area of the cell will increase as the volume of the cell increases.
C) will eventually be problematic, since the cell's ability to absorb nutrients through its outer membrane will not increase as quickly as its cytoplasmic needs.
D) should be beneficial, since the cell will be able to divert the ATP normally used for cell division to other processes.
Which of the following pairs is mismatched?
A) trichomoniasis — fungus B) gonorrhea — gram-negative cocci C) chancroid — gram-negative rod D) Gardnerella — clue cells E) syphilis — gram-negative spirochete
Which of the following methods of enumerating cells is the only one to detect live cells?
A. direct microscopic count B. viable plate count C. turbidity D. coulter counter E. flow cytometer