Which of the following represents
xenotransplantation?
a. cows resistant to mad cow disease
b. goats that produce spider silk
c. corn with Bt genes
d. pigs carrying human livers
e. more than one of these represents
xenotransplantation
D
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Cells found in plants and animals have similarities but can differ in function. Consider the following two organisms: a corn plant cell (Zea mays) and a camel cell (Bactrianus ferus). What is the best explanation for the difference in the cellular vacuole size between these two biotic organisms?
A. The corn cells' have a small vacuole size because it does not need long term water and electrolyte storage. B. The camel cells' have a small vacuole size because it does not need long term water and electrolyte storage. C. The camel cells' have a small vacuole size because it is not in contact with toxins that need to be removed from the cell. D. The corn cells' have a large vacuole size because it is in contact with many toxins in the soil which need to be removed from the cell.
Visual accommodation involves the ability to ____.
A. change the sensitivity of the rods and cones by means of neurotransmitters B. change the position of the retina C. change the thickness of the lens by contracting or relaxing certain muscles D. protect the eyeball from foreign matter E. prevent eye strain
Where do transcription and translation occur in prokaryotic cells?
A) in the plasma membrane B) in the nucleus C) in the cytoplasm D) in mitochondria
A woman goes to her gynecologist and reports that she is experiencing pain during intercourse and frequently has an unusual vaginal discharge that is increased in quantity and sort of foamy. A vaginal smear shows normal appearing epithelial cells along
with small leaf-shaped cells with prominent oval nuclei. What disease is the woman experiencing? A) cervical cancer B) herpes C) leptospirosis D) syphilis E) trichomoniasis