Gametophytes are multicellular plants that develop from reproductive cells called ________

Fill in the blank(s) with correct word


spores

Biology & Microbiology

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In the field of plant transgenics, the use of the bacterium Agrobacterium tumefaciens has proven usefulbecause:a

it is not attacked by plant immune systems. b. it has been genetically engineered to penetrate the plant cell wall. c. it can directly modify the plant genome, causing it to make useful products for humans. d. it is found naturally in almost all species of plants. e. it is able to transfer a plasmid into host plant cells.

Biology & Microbiology

Which animals exhibit problem solving?

a. all vertebrates b. a few vertebrates, including primates c. only primates d. only humans

e. all vertebrates, and a few invertebrates

Biology & Microbiology

Kinesin 1 is a motor protein molecule consisting of

a. two heavy chains. b. one heavy chain and two light chains. c. two heavy chains and two light chains. d. two heavy chains and four light chains. e. four heavy chains and four light chains.

Biology & Microbiology

What happens first following a neuronal stimulation?

a. Sodium ions enter the cell. b. Sodium ions leave the cell. c. Potassium ions enter the cell. d. Potassium ions leave the cell. e. Potassium ions are involved in positive feedback.

Biology & Microbiology