A human X-linked gene is
a. found only in males.
b. more frequently expressed in females.
c. found on the Y chromosome.
d. transmitted from father to son.
e. found on the X chromosome
E
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Because peptidoglycan lies outside the plasma membrane, all steps in the complex synthesis process of this molecule takes place outside the cell.
Answer the following statement true (T) or false (F)
The cytoplasmic membrane of bacteria
A. acts as a selectively permeable barrier, allowing some molecules to pass while preventing the movement of others. B. is the major site of ATP synthesis in aerobes. C. retains the cytoplasm and its contents. D. All of the choices are correct.
The DNA of an organism is studied and found to contain 30% adenine. Based on this you would
predict that the DNA of this organism also contains 30% ____.
a. thymine b. cytosine c. each of cytosine and guanine d. each of thymine and guanine e. guanine
Which antibody is concentrated in the respiratory tract?
A. IgD B. IgG C. IgA D. IgE E. IgM