The inner mitochondrial membrane contains proteins that
a. synthesize ATP.
b. pump protons.
c. transport pyruvate and fatty acids.
d. All of the above
Ans: d. All of the above
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Which genetic condition can be described as the inheritance of the heterozygous phenotype, which is expressed as an intermediate between the dominant and recessive alleles?
A) dominance B) codominance C) incomplete dominance D) epistasis
All of the following are good barriers to invasion by microbes EXCEPT:
A. intestinal bacteria B. eye secretions C. mucus membranes D. broken skin
Which of the following statements concerning B cell receptors (BCRs) is FALSE?
A) They are formed in response to an encounter with an antigen. B) They are complementary in shape to a specific antigenic determinant that they may or may not encounter. C) They are bound to the surface of B lymphocytes and have two antigen-binding sites. D) Each B lymphocyte is randomly generated with antibody variable regions that determine its BCR. E) Scientists estimate that each person forms at least 1011 different types of B lymphocytes with distinct BCRs.
Truffles are _______.
A. the mycelium or vegetative part of a fungus B. underground fruiting bodies of a type of fungus that lives in symbiosis with certain species of trees C. sporophytes D. nodules that form as part of the roots of legume plants like beans and peas