Immunological tolerance refers to ____
a. decreased immune system response to latent viruses
b. decreased immune system response to nonpathogenic bacteria
c. decreased tolerance of the body for pathogens it has already encountered
d. desensitization to allergens to lessen allergic responses
e. protection of the body’s own molecules from attack by its immune system
ANSWER: e
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Many types of cancer cells have been detected to secrete significant levels of lactate. Do you think these cells are likely undergoing beta-oxidation?
A. Yes, because beta-oxidation can generate intermediates that would lead to the production of lactate. B. No, because if lactate is being produced, the cell is not likely making use of the pathways needed to make use of the products of beta-oxidation. C. Yes, because lactate stimulates beta-oxidation. D. No, because lactate is consumed in beta-oxidation Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about lactate fermentation? How do products from this process indicate how cancer cells derive energy? What other information is related to the question? Choose Answer Do you have all necessary information to determine which products would affect cellular respiration? Reflect on Process Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
The major site of cell membrane synthesis is the
A. plasma membrane. B. endoplasmic reticulum. C. nucleus. D. lysosome.
In ____ bonds, both atoms exert the same pull on shared electrons
a. triple covalent b. polar covalent c. double covalent d. nonpolar covalent e. coordinate covalent
Sexual reproduction results in many benefits for a population, but not without some inconvenience; for example,
a. each participant must locate an appropriate mate. b. the time and effort required for finding a mate may mean that short-term benefits for survival are missed. c. sexual reproduction requires special cells to occur. d. all of the above