Rho Family GTPases (Rho, Rac, Cdc42) stimulate cytoskeletal microfilament assembly for all of the following except
A) stress fiber formation.
B) lamellipodia formation.
C) nuclear envelope breakdown for mitosis.
D) cytokinetic furrow formation.
E) filopodia formation.
Answer: C
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To use a backcross mating strategy for QTL mapping
A. two inbred parental strains that differ in a quantitative trait are crossed are mated B. the F1 offspring are crossed with each other. C. the F2 offspring must contain chromosomes that are recombinant betweeen the markers and the genes involved in the trait D. each parent should contain the same alleles at each QTL.
Suppose that you have a cell with a membrane that is permeable to water but not to Na+ or Cl? or any
other solute. There is more NaCl outside the cell than inside the cell, and the osmolarity of the cell is higher than that of the solution surrounding the cell. Which of the following should occur?
a. Overall, the cell should lose water. b. Overall, the cell should take up water, Na+, and Cl?. c. Overall, the cell should take up water. d. Overall, the cell should take up water and lose Na+ and Cl?. e. Overall, the cell should lose water and take up Na+ and Cl?.
In a sequence of infections, the first infection that predisposes the patient to further infection is called the _______ infection
Fill in the blank(s) with the appropriate word(s).
Angiosperms with wind-dispersed pollen include
A) grasses. B) pine trees. C) ferns. D) roses. E) mosses.