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  • Question 1 - Which of the following refers to the process of decoding messenger RNA into...

    Correct

    • Which of the following refers to the process of decoding messenger RNA into an amino acid sequence?

      Your Answer: Translation

      Explanation:

      Messenger RNA (mRNA) is decoded in a ribosome, outside the nucleus, to produce a specific amino acid chain, or polypeptide. This is known as translation and follows after the process transcription of DNA to RNA in the cell’s nucleus.

    • This question is part of the following fields:

      • Medicine
      • Metabolism
      4.4
      Seconds

  • Question 2 - The conversion of fructose to fructose 1-phosphate is catalysed by: ...

    Correct

    • The conversion of fructose to fructose 1-phosphate is catalysed by:

      Your Answer: Fructokinase

      Explanation:

      The first step in the metabolism of fructose is the phosphorylation of fructose to fructose 1-phosphate by fructokinase.

    • This question is part of the following fields:

      • Medicine
      • Metabolism
      3.1
      Seconds

  • Question 3 - During anaerobic glycolysis, the net production of ATP is: ...

    Correct

    • During anaerobic glycolysis, the net production of ATP is:

      Your Answer: 2

      Explanation:

      Anaerobic glycolysis is the transformation of glucose to lactate when limited amounts of oxygen (O2) are available. Anaerobic glycolysis is only an effective means of energy production during short, intense exercise, providing energy for a period ranging from 10 seconds to 2 minutes. It produces 2 ATP molecules per glucose molecule.

    • This question is part of the following fields:

      • Medicine
      • Metabolism
      1.5
      Seconds

  • Question 4 - When oxygen supply is restored, lactate formed during anaerobic metabolism is converted back...

    Correct

    • When oxygen supply is restored, lactate formed during anaerobic metabolism is converted back to?

      Your Answer: Pyruvate

      Explanation:

      During intense exercise, when the rate of demand for energy is high, glucose is broken down and oxidized to pyruvate, and lactate is then produced from the pyruvate faster than the body can process it, causing lactate concentrations to rise. The resulting lactate can be used in two ways:1. Oxidation back to pyruvate by well-oxygenated muscle cells, heart cells, and brain cells. Pyruvate is then directly used to fuel the Krebs cycle2. Conversion to glucose via gluconeogenesis in the liver and release back into circulation.

    • This question is part of the following fields:

      • Medicine
      • Metabolism
      5.2
      Seconds

  • Question 5 - In the urea cycle, which substance is formed in the mitochondria? ...

    Correct

    • In the urea cycle, which substance is formed in the mitochondria?

      Your Answer: Carbamoyl phosphate

      Explanation:

      Before the urea cycle begins ammonia is converted to carbamoyl phosphate in the mitochondria.

    • This question is part of the following fields:

      • Medicine
      • Metabolism
      7.3
      Seconds

  • Question 6 - Which of the following groups are purines? ...

    Correct

    • Which of the following groups are purines?

      Your Answer: Adenine, guanine, hypoxanthine

      Explanation:

      There are many naturally occurring purines. They include the nucleobases, adenine and guanine. Other notable purines are hypoxanthine, xanthine), theobromine, caffeine, uric acid and isoguanine.

    • This question is part of the following fields:

      • Medicine
      • Metabolism
      3.1
      Seconds

  • Question 7 - The largest energy reserves among both lean and obese subjects are from? ...

    Correct

    • The largest energy reserves among both lean and obese subjects are from?

      Your Answer: Fatty acids

      Explanation:

      The energy required for sustained exercise is provided by the oxidation of two fuels, glucose stored as glycogen in the liver and muscle, and long-chain fatty acids, stored as adipose tissue triglycerides. The latter provides the largest energy reserve in the body.

    • This question is part of the following fields:

      • Medicine
      • Metabolism
      2.5
      Seconds

  • Question 8 - Lipid- lowering drugs like Lovastatin reduce cholesterol synthesis by inhibiting which enzyme? ...

    Correct

    • Lipid- lowering drugs like Lovastatin reduce cholesterol synthesis by inhibiting which enzyme?

      Your Answer: HMG-CoA reductase

      Explanation:

      Statins, also known as HMG-CoA reductase inhibitors, are a class of lipid-lowering medications. Statins have been found to reduce cardiovascular disease (CVD) and mortality in those who are at high risk.

    • This question is part of the following fields:

      • Medicine
      • Metabolism
      4.1
      Seconds

  • Question 9 - A deficiency in Niacin leads to which clinical deficiency syndrome? ...

    Correct

    • A deficiency in Niacin leads to which clinical deficiency syndrome?

      Your Answer: Pellagra

      Explanation:

      Pellagra is a disease caused by a lack of the vitamin niacin (vitamin B3). Symptoms include inflamed skin, diarrhoea, dementia, and sores in the mouth. Areas of the skin exposed to either sunlight or friction are typically affected first. Over time affected skin may become darker, stiff, begin to peel, or bleed.

    • This question is part of the following fields:

      • Medicine
      • Metabolism
      2.8
      Seconds

  • Question 10 - What does a deficiency of adenosine deaminase lead to? ...

    Correct

    • What does a deficiency of adenosine deaminase lead to?

      Your Answer: SCID

      Explanation:

      Severe combined immunodeficiency, SCID, also known as alymphocytosis, Glanzmann–Riniker syndrome, severe mixed immunodeficiency syndrome, and thymic alymphoplasia,[1] is a rare genetic disorder characterized by the disturbed development of functional T cells and B cells. Most cases of SCID are due to mutations in the gene encoding the common gamma chain (γc), a protein that is shared by the receptors for interleukins. The second most common form of SCID after X-SCID is caused by a defective enzyme, adenosine deaminase (ADA), necessary for the breakdown of purines.

    • This question is part of the following fields:

      • Medicine
      • Metabolism
      6.3
      Seconds

SESSION STATS - PERFORMANCE PER SPECIALTY

Medicine (10/10) 100%
Metabolism (10/10) 100%
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