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).

Biology & Microbiology

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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.

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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

Biology & Microbiology

the enzyme that functions in the small intestine to digest carbohydrates is pancreatic

What will be an ideal response?

Biology & Microbiology

The technology of transplanting nonhuman organs into humans is known as _____

a. immunoglobulin treatment b. cross reception c. genomic transmission d. xenotransplantation e. organotransplantation

Biology & Microbiology