Which of the following is not an autoimmune disease?
A. hay fever
B. rheumatoid arthritis
C. myasthenia gravis
D. systemic lupus erythematosus
E. rheumatic fever
Answer: A
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During cytokinesis, a critical step in septation is the assembly of the
A. spindle body. B. replisome. C. cytoskeletal spiral. D. Z ring.
RecA can facilitate strand exchange with a variety of substrates in vitro. Which of the following is not one of these structures?
A. a linear, single-strand DNA invading a linear duplex DNA B. a circular, single-strand DNA invading a linear duplex DNA C. a linear DNA duplex containing a single-stranded gap invading a linear duplex DNA D. a linear, double-stranded DNA invading a double-stranded circular DNA E. a linear DNA duplex containing a single-stranded gap invading a linear duplex DNA followed by branch migration to form a four-stranded intermediate
Aerobic respiration does which of the
following?
a. increases the supply of ATP b. increases the formation of actin filaments c. increases the enzymes for glycolysis d. increases muscle size e. all of these
Sclereids are cells that:a
are found in wood and bark. b. conduct water and dissolved minerals. c. are usually found in nut shells and pits of stone fruits. d. conduct dissolved sugars. e. form cytoplasmic connections between cells.