The expression "one bad apple spoils the whole bunch" probably has to do with the action of ethylene on fruit ripening.
Answer the following statement true (T) or false (F)
True
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An epidermal growth factor (EGF) stimulates a cell to enter mitosis by binding to a receptor on the cell's plasma membrane. The EGF receptor is a product of a _____ gene
a. repressor b. structural c. master d. proto-onco e. growth
Chromatin material is
A. one of six materials that make up a chromosome. B. really the same as a chromosome. C. one of the cytoplasmic organelles during the cell's normal daily operation. D. not described by any of these statements.
The ATP generated from cellular respiration is not sufficient to drive the Calvin cycle in plants, even if appropriate levels of NADPH and CO2 are present. Why not?
A. Breaking down sugar to provide the energy needed to synthesize sugar would be a futile cycle. B. Plants do not undergo cellular respiration. C. Cellular respiration and photosynthesis do not happen in the same cells in plants. D. The Calvin cycle requires more ATP than can possibly be made from cellular respiration.
Genes with promoters that are constitutively expressed and needed in all cells are called
a. universal factors. b. silencers. c. activators. d. housekeeping genes. e. enhancers.