For the complete respiration of one molecule of glucose, the citric acid cycle must turn a total of
What will be an ideal response?
two times
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Which component of the accompanying scenario would be considered the effector?
a. release of insulin b. glycogen and fat synthesis c. potassium ion channel d. increased glucose levels e. liver and muscle
When Ron Evans generated transgenic mice in which the gene PPAR-delta was constitutively active (i.e., always expressed), he found that these mice showed a shift from fast glycolytic fibers to slow oxidative fibers. One consequence of this anatomical change would be that the transgenic mice
A. were more likely to become obese than wild-type (nontransgenic) mice. B. had muscles that were not as red as those of wild-type (nontransgenic) mice. C. showed greater endurance in a running test. D. showed less endurance in a running test. E. had leg muscles with lower mitochondrial and capillary densities than wild-type (nontransgenic) mice.
The following diagram is a cell from a species that has a diploid number of 4. What stage of meiosis or mitosis does this diagram appear to be showing?
a) anaphase of mitosis b) anaphase I of meiosis I c) anaphase II of meiosis II d) metaphase II of meiosis II
What is the structural and contractile unit of a skeletal muscle called?
Myofilament Myofibril Sarcoplasmic reticulum Sarcomere