Specific control points that are sensitive to extracellular conditions regulate G1-S transition in eukaryotic cells. Passage through the yeast Start point requires sufficient ________,

whereas passage through the animal cell restriction point requires the presence of ________.
Fill in the blank with correct word.


Answer: nutrients; growth factors

Biology & Microbiology

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Measurements of the amount of DNA per nucleus were taken on a large number of cells from a growing fungus. The measured DNA levels ranged from 3 to 6 picograms per nucleus. In which stage of the cell cycle did the nucleus contain 6 picograms of DNA?

A) G0 B) G1 C) S D) G2 E) M

Biology & Microbiology

Somatostatin is secreted by

a. pancreatic islet cells. b. the thyroid gland. c. the pituitary gland. d. the adrenal medulla. e. the adrenal cortex

Biology & Microbiology

When fermentation occurs in grapes left on the vine, the final product is the ethanol used to make wine. When fermentation occurs in our muscles, the final product is:

a) oxygen. b) 2 lactic acid molecules. c) 2 NADH molecules. d) 2 ATP molecules. e) ethanol as well.

Biology & Microbiology

The "genetic code" determines the types of proteins made by a cell. The term "genetic code" refers to:

What will be an ideal response?

Biology & Microbiology