The ascending limb of the loop of Henle is impermeable to _______________ and actively pumps _______________ into the interstitial fluid
Fill in the blank(s) with correct word
water; sodium
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Which best describes energy production during cellular respiration?
A. A small amount of energy is produced by substrate level phosphorylation; most is produced by oxidative phosphorylation. B. A small amount of energy is produced by oxidative phosphorylation; most is produced by substrate level phosphorylation. C. An equal amount is produced by oxidative and substrate level phosphorylation. D. It depends on the organism. Some produce most of their energy by substrate level phosphorylation, and some produce most of their energy by oxidative phosphorylation. E. None of these answer options accurately describes energy production during cellular respiration.
The monomer subunit of immunoglobulin molecules has all of the following except
A. a variable and constant region on each polypeptide chain. B. disulfide bonds between polypeptide chains. C. four antigen binding sites. D. two identical heavy polypeptide chains. E. two identical light polypeptide chains.
High titers of specific antibodies are components of
A. toxoids. B. attenuated vaccines. C. immune serum globulin (ISG). D. specific immune globulin (SIG). E. gamma globulin.
The 1000 Genomes Project sequence the genomes of over 2,500 people around the world and compared those sequences to each other. Which of the following statements is consistent with the findings of the 1000 Genomes Project?
A. Most genetic variation is observed when comparing individuals from populations that are geographically separated. B. The genetic diversity within Homo sapiens is due to historically large population sizes. C. There is very little genetic variation between individual human beings. D. Genetic variation is significantly higher than phenotypic variation between humans.