Biology Quiz Paper
| | The most important source of nitrogen entering the body is from: | | | Student Response | Value | Correct Answer | Feedback | A. | nucleic acids. | | | | B. | amino acids contained in dietary protein. | 100% | | | C. | urea. | | | | D. | ammonia. | | | | | Score: | 0.1/0.1 | | | 2. | Quest#2 | | Ammonia is converted to urea in the: | | | Student Response | Value | Correct Answer | Feedback | A. | heart. | | | | B. | brain. | | | | C. | kidney. | | | | D. | liver. | 100% | | | | Score: | 0.1/0.1 | | | 3. | Quest#3 | | Which of the following statements about the urea cycle is CORRECT? | | | Student Response | Value | Correct
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| the first step involves transamination. | | | | B. | ammonia is formed from glutamate. | | | | C. | deamination results in production of an alpha-ketoacid. | | | | D. | All of the above. | 100% | | | | Score: | 0.1/0.1 | | | 6. | Quest#6 | | Maple syrup urine disease: | | | Student Response | Value | Correct Answer | Feedback | A. | is characterized by metabolic alkalosis. | | | | B. | is caused by a deficiency of branched chain alpha-ketoacid dehydrogenase. | 100% | | | C. | if untreated does not change the IQ of affected individuals. | | | | D. | is a common X-linked dominant disorder. | | | | | Score: | 0.1/0.1 | | | 7. | Quest#7 | | Which of the following enzymes is deficient in humans suffering from phenylketouria (PKU)? | | | Student Response | Value | Correct Answer | Feedback | A. | Cystathionine synthase. | | | | B. | Tyrosinase. | | | | C. | Branched chain alpha-ketoacid dehydrogenase. | | | | D. | Phenylalanine hydroxylase. | 100% | | | | Score: | 0.1/0.1 | |
| the first step involves transamination. | | | | B. | ammonia is formed from glutamate. | | | | C. | deamination results in production of an alpha-ketoacid. | | | | D. | All of the above. | 100% | | | | Score: | 0.1/0.1 | | | 6. | Quest#6 | | Maple syrup urine disease: | | | Student Response | Value | Correct Answer | Feedback | A. | is characterized by metabolic alkalosis. | | | | B. | is caused by a deficiency of branched chain alpha-ketoacid dehydrogenase. | 100% | | | C. | if untreated does not change the IQ of affected individuals. | | | | D. | is a common X-linked dominant disorder. | | | | | Score: | 0.1/0.1 | | | 7. | Quest#7 | | Which of the following enzymes is deficient in humans suffering from phenylketouria (PKU)? | | | Student Response | Value | Correct Answer | Feedback | A. | Cystathionine synthase. | | | | B. | Tyrosinase. | | | | C. | Branched chain alpha-ketoacid dehydrogenase. | | | | D. | Phenylalanine hydroxylase. | 100% | | | | Score: | 0.1/0.1 | |