Adult stem cells can only differentiate into the cell types that comprise the tissues in which they are located
a. True
b. False
ANSWER: True
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Phospholipids
1.have a polar head and two non-polar tails. 2.have a non-polar head and two polar tails. 3.are soluble in water. 4.are polymers of amino acids.
The two primary mechanisms of cell differentiation are conditional specification and
A. fertilization. B. gastrulation. C. autonomous specification. D. polar cap fusion. E. organogenesis.
In the female reproductive cycle, the endometrium is thickest ____
a. during the menstrual phase b. during the proliferative phase
c. shortly before ovulation d. during ovulation e. during the secretory phase
Under some circumstances, ________ is beneficial, but under other conditions the bacteria become overabundant leading to inflammation of hair follicles
A) Propionibacterium acnes B) Pseudomonas aeruginosa C) Streptococcus pyogenes D) Microsporum E) Bacillus anthracis