A key difference between transforming plant cells and human cells is
A. genes to be expressed in human cells require a eukaryotic promoter, and genes to be expressed in plants don't.
B. DNA cannot be introduced into human cells.
C. Agrobacterium is commonly used as a tool to directly transform plant cells but not human cells.
D. a vector is needed to introduce DNA into human cells and not plant cells.
C. Agrobacterium is commonly used as a tool to directly transform plant cells but not human cells.
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Which of the following is an example of nondisjunction?
a. muscular dystrophy b. sickle cell anemia c. Down syndrome d. cri du chat
Mendel's monohybrid cross of Tt parents resulted in a tall-to-short ratio of
A. 2:1. B. 1:1. C. 1:2. D. 1:3. E. 3:1.
To which of the following groups does the
organism in the above figure belong? a. diplomonads, parabasalids, trypanosomes, and euglenoids b. ciliates, dinoflagellates, and apicomplexans c. water molds, diatoms, and brown algae d. chlorophyte and charophyte algae e. amoebas and slime molds
Where in a plant cell is chlorophyll found?
a. on the outer chloroplast membrane b. in the cytoplasm of the cell c. in the stroma d. in the thylakoids e. none of these