Eukaryotic cells, but not prokaryotic cells, contain ribosomes.
a. true
b. false
Ans: b. false
Biology & Microbiology
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The CD4 molecule is
A) an HIV surface glycoprotein. B) a cell-surface protein receptor for HIV. C) found only on T-helper cells. D) an HIV surface glycoprotein that is found only on T-helper cells.
Biology & Microbiology
Stem cells are cells that are capable of:
A. producing an entire organism. B. producing the three germ layers. C. differentiating into different cell types. D. differentiating into a limited number of different cell types. E. differentiating into any type of cell.
Biology & Microbiology
Which of the following can serve as channels or pumps within the cell membrane?
a. integral proteins b. glycoproteins c. cholesterol d. phospholipids
Biology & Microbiology
What number are the Lipopolysaccarides ?
What will be an ideal response?
Biology & Microbiology