Keratin filaments are found in what cell types?
a. Fibroblasts
b. Epithelial cells
c. Muscle cells
d. Neurons
e. All of the above
Ans: b. Epithelial cells
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Which of the following is true of the boys who
were treated for SCIDs using gene therapy?
a. all were cured b. all died c. they all improved, but not cured d. some contracted leukemia e. none of them were cured
Photosynthetic, nonmotile organisms having cell walls belong to the Kingdom
A. Plantae. B. Fungi. C. Protista. D. Animalia.
What is the type of bond between the hydrogen of one molecule and the nitrogen of another molecule?
a. Ionic bond b. Covalent bond c. Hydrogen bond d. Disulfide bond e. Hydrophobic bond
Bacteriophages do not undergo adsorption to specific host cell receptors prior to penetration.
Answer the following statement true (T) or false (F)