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Biochemistry Quiz | Biochemistry Short Questions and Answers

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Free download in PDF Biochemistry Short Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams. These short solved questions or quizzes are provided by Gkseries.
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41 Which of the following has a known association with phenylketonuria?
[A] Presentation in the second year of life with absence seizures.
[B] The association of red hair and brown eyes.
[C] Normal development.
[D] Musty odour.
Answer: Musty odour.
42 Which of the following is a characteristic feature of familial hypercholesterolaemia?
[A] Autosomal dominant inheritance
[B] elevated chylomicrons
[C] hypertriglyceridaemia
[D] increased expression of LDL receptors
Answer: Autosomal dominant inheritance

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43 An 16-year-old man presents with polyuria and polydipsia. Which of the following may confirm the diagnosis of diabetes mellitus?
[A] A random plasma glucose of >7.5 mmol/L
[B] A finding of 3+ ketonuria
[C] An HbA1c of 7.0%
[D] A fasting plasma glucose of 7.5 mmol/L
Answer: A fasting plasma glucose of 7.5 mmol/L
44 Which of the following enzyme defects is associated with a characteristic body odour?
[A] Phenylalanine aminotransferase
[B] Galactose0-phosphate-uridyltransferase
[C] Ornithine transcarbamylase deficiency
[D] Branched chain ketoacid decarboxylase
Answer: Branched chain ketoacid decarboxylase
45 Which of the following conditions may be detectable by growth monitoring?
[A] Hyperthyroidism
[B] Hypothyroidism
[C] Pseudohypoparathyroidism
[D] XYY Syndrome
Answer: Hypothyroidism
46 With respect to lipoprotein transport and metabolism in the body, the following statements are correct EXCEPT:
[A] Arterial walls contain cells with LDL receptors.
[B] Cholesterol is required for the formation of red blood cell membranes.
[C] Chylomicrons are synthesized in the liver.
[D] HDL is assembled in the extracellular space.
Answer: Chylomicrons are synthesized in the liver.

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