A polar molecule moves across a membrane from a region of high concentration to a region of low concentration by a process called

A. simple diffusion.
B. facilitated diffusion.
C. active transport.
D. phagocytosis.


Ans: B. facilitated diffusion.

Biology & Microbiology

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During regulation of biofilm formation in Pseudomonas, cells leave the biofilm when levels of cyclic dimeric GMP are high.

Answer the following statement true (T) or false (F)

Biology & Microbiology

During the tube gel electrophoresis phase of 2-D gel electrophoresis, proteins are separated based on their net charge at a given pH. Each protein will migrate to a point in the gel where its net charge is zero. This process is known as what?

A. isoelectric focusing B. electrophoretic honing C. migratory centering D. hypoelectric centering E. hyperelectric focusing

Biology & Microbiology

Gene therapy has been successful in treating Leber congenital amaurosis, a rare form of

____________. Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

Populations of different species that live together in the same place are called ________.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology