Question

a key difference between transforming plant cells and human cells is
multiple choice
a vector is needed to introduce dna into human cells and not plant cells.
genes to be expressed in human cells require a eukaryotic promoter, and genes to be expressed in plants dont.
agrobacterium is commonly used as a tool to directly transform plant cells but not human cells.
dna cannot be introduced into human cells.

Explanation:

Agrobacterium - tumefaciens is a soil - dwelling bacterium that can transfer a piece of its DNA (T - DNA) into plant cells, making it a common tool for plant cell transformation. Human cells are not natural hosts for Agrobacterium, and this bacterium is not used to directly transform human cells. Vectors are needed for both plant and human cell DNA introduction. Plant genes also require appropriate promoters for expression, and DNA can be introduced into human cells through various methods like viral vectors.

Answer:

C. Agrobacterium is commonly used as a tool to directly transform plant cells but not human cells.