The megaspore divides mitotically, resulting in a female gametophyte or embryo sac that differentiates into an egg and a central cell with two nuclei called the
What will be an ideal response?
polar nuclei
Biology & Microbiology
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Conjugation, transduction, and transformation are the three main mechanisms for gene transfer between bacteria. Compare these three mechanisms in terms of how DNA is transferred
What will be an ideal response?
Biology & Microbiology
Archaeal membranes contain which of the following lipids?
A. Phospholipids B. Glycolipids C. Sulfolipids D. All of the choices are correct.
Biology & Microbiology
To maintain order within their cells and organs, all living things must
a. extract energy from sunlight. b. constantly change. c. carry on metabolism. d. reproduce. e. be able to move.
Biology & Microbiology
The elongation of stems is stimulated by
A. ethylene only. B. gibberellin only. C. auxin and gibberellin. D. auxin only. E. auxin and ethylene.
Biology & Microbiology