Habitat: Small Intestine
What will be an ideal response?
•The pH is much closer to neutral (~8).
•Problem for microbes: the rapid flow of contents through intestines.
-Rapid flow helps human cells compete for nutrients.
•Even places with highest concentrations still relatively low (105/g).
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In sickle cell anemia, the defective hemoglobin differs from the normal hemoglobin by
A. the color of the pigment. B. the size of the molecule. C. a single amino acid substitution. D. the total number of amino acids. E. the type of blood cell it is found in.
Where would one expect to find the most telomerase?
A. male germ cells that give rise to gametes B. skin cells from a 60-year-old individual C. skin cells from a 2-year-old individual D. a nerve cell from a 60-year-old individual E. a nerve cell from a 2-year-old individual
the enzyme that functions in the small intestine to digest carbohydrates is pancreatic
What will be an ideal response?
The technology of transplanting nonhuman organs into humans is known as _____
a. immunoglobulin treatment b. cross reception c. genomic transmission d. xenotransplantation e. organotransplantation