Which of the following is NOT a function of the plasma membrane?

a) energy transduction
b) mediation of the interactions between a cell and its neighbors
c) signal transduction
d) control center of the cell


Ans: d) control center of the cell

Biology & Microbiology

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Vitamin ____ is produced in humanskin when exposed to sunlight

a. A b. B1 c. C d. D e. folic acid

Biology & Microbiology

If a shoot’s tip breaks off, ____ moves into lateral buds and stimulates cell divisions

a. auxin b. gibberellin c. cytokinin d. abscisic acid e. ethylene

Biology & Microbiology

Cloning of an entire organism is known as ________

A) gene cloning B) genomics C) regenerative medicine D) reproductive cloning E) rherapeutic cloning

Biology & Microbiology

Consider the following genetic study involving two autosomal genes. One of these, eye colour, has the dominant allele (R) for red eye colour and the recessive allele (r) for yellow eye colour. The other has the dominant allele (T) leading to paws with thumbs, while the recessive allele (t) codes for paws without thumbs. Presuming no linkage between the genes, what should be the phenotype ratio of the offspring produced by a testcross (RrTt ? rrtt)?

a. 1 red-eyed with thumbs: 1 yellow-eyed without thumbs b. 3 red-eyed with thumbs: 1 yellow-eyed without thumbs c. 1 red-eyed with thumbs: 1 yellow-eyed with thumbs: 1 red-eyed without thumbs: 1 yellow-eyed without thumbs d. 9 red-eyed with thumbs: 3 yellow-eyed with thumbs: 3 red-eyed without thumbs: 1 yellow-eyed without thum

Biology & Microbiology