In animals, all of the following are associated with embryonic development except

A. Migration of cells to specific areas
B. formation of germ layers
C. Activation of all the genes in each cell
D. Inductive tissue interactions
E. cell division at a relatively rapid rate


Ans: C. Activation of all the genes in each cell

Biology & Microbiology

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Standard Precautions include:

a. using barrier devices to prevent exposure to skin and mucous membranes. b. recapping needles by hand. c. storing drinks but not food in laboratory refrigerators. d. discarding sharps in plastic biohazard bags.

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What is the success rate for producing live

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a. 1-2 % b. 3-5% c. 10-15% d. 40-50% e. 100%

Biology & Microbiology

Macromolecules that are used by most organisms to store hereditary information are called:

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Biology & Microbiology