The mouse is a particularly useful model for studying human disease because _____
a. mice and humans are 100% genetically identical
b. all mice are in essence, clones
c. mice do not feel pain and discomfort
d. mice and humans are the only species whose genomes have been sequenced
e. approximately 90% of human disease-associated genes are present in the mouse genome
e
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The tonoplast is another name for
a. the plant nuclear envelope. b. a chloroplast. c. the cell wall. d. an undifferentiated plastid. e. the vacuolar membrane.
A characteristic of life is
A. chemical bonds. B. the use of oxygen. C. the production of CO2. D. cellular organization.
Bacteria and many other microbes do not ________ and therefore do not fit Linneaus' definition of species.
A. reproduce sexually B. have nuclei C. exchange genetic material D. have cytoplasmic membranes E. reproduce asexually
The nucleus, an organelle found in eukaryotic cells, confines the __________, keeping them separated from other components of the cell
(a) lysosomes (b) chromosomes (c) peroxisomes (d) ribosomes