Which process produces multiple proteins from the same primary transcript in the same cell?
A. chromatin remodeling
B. histone modification
C. combinatorial control
D. alternative splicing
E. RNA editing
D
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Once human nerve cells become mature, they normally exit the cell cycle and remain in ____
a. G0 b. G1 c. G2 d. S phase e. prophase
The fluid mosaic model of cell membrane structure describes a membrane with phospholipids that ________ and proteins that ________
a. can drift laterally / may either be fixed or capable of drifting b. are permeable to water-soluble molecules / spontaneously assemble into two layers c. are fixed in place / can drift laterally d. can drift laterally / are fixed in place
Which group of organisms will have a coelom and a body that is segmented?
a. Cnidaria b. Annelids c. Planarians d. Porifera e. Platyhelminthes
Which event occurs during interphase?
a. The cytoplasm divides. b. The cell doubles its cytoplasmic contents. c. The nuclear envelope disassembles. d. The nucleus divides. e. Protein synthesis is halted.