Antibodies specifically attack
A) foreign cells.
B) proteins.
C) viruses.
D) antigens.
E) B cells.
D) antigens.
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The opening in the iris through which light passes is the
A) conjunctiva. B) cornea. C) pupil. D) anterior chamber. E) posterior chamber.
Which of the following lists the connective tissue coverings of the axons, fascicles, and entire nerve in the correct order?
a) endoneurium, perineurium, epineurium b) endoneurium, epineurium, perineurium c) perineurium, epineurium, endoneurium d) epineurium, endoneurium, perineurium
Matching
A) A B) E C) C D) D E) B 8) Nonpolar region of phospholipid. 9) Glycocalyx. 10) Polar region of phospholipid. 11) Peripheral protein. 12) Integral protein. 13) Unique glycoproteins and glycolipids involved in cell recognition. 14) Hydrophilic portion of phospholipid.
Which of the following nitrogen bases is found in RNA but not DNA?
A. Adenine B. Uracil C. Thymine D. Guanine E. Cytosine