Mitotic CDK kinases are activated by an increase in mitotic cyclins.
a. true
b. false
Ans: a. true
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Small RNAs can regulate gene expression. One type, called micro RNA (miRNA), acts by binding directly to
A. tRNA to prevent transcription. B. mRNA to prevent transcription. C. tRNA to prevent translation. D. mRNA to prevent translation.
The second law of thermodynamics states that ____.
A. energy can be transformed into matter, and because of this, something is obtained for nothing B. energy can be destroyed during nuclear reactions such as those that occur inside the sun C. if energy is gained by one region of the universe, another place in the universe also must gain energy in order to maintain the balance of nature D. energy tends to flow from concentrated to less concentrated forms E. energy tends to be stable over time
Which of the following statements describes how an increase in osmotic pressure could occur in a cell?
A) The concentration of water is higher inside the cell than outside the cell B) The concentration of water is lower inside the cell than outside the cell
In order for gene therapy to be permanent in the patient being treated,
A) the defective gene must first be removed from all somatic cells. B) the normal gene must be added to the germ-line cells. C) the normal gene must first be treated with UV radiation to ensure noninfectivity. D) the normal gene must be transferred to somatic cells that can continuously multiply.