Which of the following is least likely to be part of a cell membrane?
A) proteoglycans
B) phospholipids
C) glycoproteins
D) transport proteins
E) enzymes
A) proteoglycans
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What proportion of the (F2 generation) offspring of a dihybrid cross is expected to be recessive for both traits?
a. 3/16 b. 9/16 c. 1/16 d. 0
Which of the following correctly lists organization levels from the simplest to the most complex?
a. atoms, organelles, cells, tissues, organs b. atoms, molecules, tissues, organelles, organisms c. molecules, atoms, cells, organelles, tissues d. molecules, cells, organelles, organisms, organs
The outermost layer of cells of the skin is the
A. stratum spinosum. B. stratum corneum. C. stratum basale (basal layer). D. stratum granulosum.
Isotype switching occurs when
A) an antibody changes which class it is. B) an antibody changes epitope it can recognize. C) a B cell changes which antibody class it is producing. D) a B cell switches which epitope it recognizes. E) activated B cells differentiate into either plasma or memory cells.