Which of the following statements describes the mitochondrial intermembrane space?
(a) It is permeable to molecules with molecular mass as high as 5000 daltons.
(b) It contains transporters for ATP molecules.
(c) It contains proteins that are released during apoptosis.
(d) It contains enzymes required for the oxidation of fatty acids.
(c)
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Bacteria are grown in 15N (heavy) medium and then transferred to 14N (light) medium and are allowed to replicate for 1 generation. The DNA is subsequently isolated and centrifuged in a CsCl2 gradient to yield what type of gradient band(s)?
A. one heavy band. B. one light band. C. one half-heavy (intermediate to heavy and light) band. D. one heavy and one half-heavy band. E. one heavy and one light band.
A new mRNA can pass through the pores of the nuclear membrane into the cytoplasm only if ________
a. it has been phosphorylated b. it has been processed c. motor proteins attach to a base sequence and link the molecule to cytoskeletal elements d. proteins attach to a base sequence near the poly-A tail and temporarily block translation
Carlson's experiments dealt with biases in which of the following ways ?
A. The subjects and the scientists were not made aware of the personality profile results from both the astrologers and the CPI test B. The astrologers were allowed to predict their own threshold of success prior to the experiment C. Subjects were divided into control groups who were not given their true personality profile as a choice and a treatment group who were given their personality profile as a choice D. Subjects were matched with individuals with the same sun sign before assignment to a control or a treatment group E. All of the above
To increase the rate of a reaction you could:
A. Add more products. B. remove a catalyst C. Add more reactants. D. Decrease the temperature.