The movement of a substance in solution from an area of higher concentration to an area of lower concentration across a selectively permeable membrane in a living organism is called:
What will be an ideal response?
diffusion
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After exposure to Agrobacterium tumefaciens bacteria containing both a recombinant T-DNA vector and a helper plasmid, new plants can be grown from single cells in the presence of herbicide. Without the herbicide,
A) neither transformed nor nontransformed cells would survive. B) only nontransformed plants would grow. C) only cells with the helper plasmid would grow. D) both transformed and nontransformed plants would grow.
are Retroviruses lysogenic or lytic?
What will be an ideal response?
If adult sponges are sessile, why can they still be classified as animals?
a. Sponge larvae are motile. b. Sponges have beating flagella. c. Sponges have an organ system. d. Sponges have bilateral body symmetry.s e. Sponges have a central nervous system.
Protons are pumped in which stage of photosynthesis?
A. light-capturing B. light-dependent reactions C. light-independent reactions D. glycolysis