Proteins that are fully translated in the cytosol and lack a sorting signal will end up in ____
(a) the cytosol.
(b) the mitochondria.
(c) the interior of the nucleus.
(d) the nuclear membrane.
(a) Proteins produced in the cytosol that lack sorting signals remain in the cytosol. Proteins produced in the cytosol and destined for the mitochondria [choice (b)] or the interior of the nucleus [choice (c)] will have a sorting signal to direct the protein to its proper location. Proteins destined for the nuclear membrane [choice (d)] are not translated in the cytosol.
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Four small bags are filled with a 10% starch solution. The membrane of each bag contains microscopic pores large enough to let smaller water molecules cross but too small for the larger starch molecules to cross.Each bag is placed in a separate beaker as follows:Bag 1 is placed in distilled water containing no starch (0% starch).Bag 2 is placed in a solution of distilled water and 5% starch.Bag 3 is placed in a solution of distilled water and 10% starch.Bag 4 is placed in a solution of distilled water and 50% starch.The bags are weighed initially and at regular intervals for a specific period of time. Some bags saw a change in weight, and some did not. Answer the following questions based on the expected outcomes of this experiment.a. Which bag should weigh approximately the same at the
end of the experiment as it did at the beginning of the experiment?b. Which bag is expected to be the heaviest at the end of the experiment?c. Which bag is expected to be the lightest at the end of the experiment? What will be an ideal response?
Another name for crossing over is:
A. realignment. B. reassortment. C. recombination. D. reallocation.
A class of pathogen recognition receptors that function exclusively as signaling receptors are known as the ________ receptors.
Fill in the blank(s) with the appropriate word(s).
When a person receives a sudden, large dose of ionizing radiation, what symptoms may be expected to
occur? a. serious infections b. intestinal hemorrhages c. anemia d. wounds that do not heal e. all of these