00
Correct
00
Incorrect
00 : 00 : 00
Session Time
00 : 00
Average Question Time ( Secs)
Retry this test Dashboard

  • Question 1 - The p53 tumour suppressor gene is located on? ...

    Incorrect

    • The p53 tumour suppressor gene is located on?

      Your Answer: Chromosome 21

      Correct Answer: Chromosome 17

      Explanation:

      P53 is classified as a tumour suppressor gene and is located on the short arm of chromosome 17.

    • This question is part of the following fields:

      • Cell Biology
      • Medicine
      36.9
      Seconds

  • Question 2 - What are the major motor proteins that interact with microtubules? ...

    Incorrect

    • What are the major motor proteins that interact with microtubules?

      Your Answer: Dynein only

      Correct Answer: Kinesin and dynein

      Explanation:

      The major motor proteins that interact with microtubules are kinesin, which usually moves toward the (+) end of the microtubule, and dynein, which moves toward the (−) end.

    • This question is part of the following fields:

      • Cell Biology
      • Medicine
      5
      Seconds

  • Question 3 - Cyclic AMP is broken down by which enzyme ...

    Incorrect

    • Cyclic AMP is broken down by which enzyme

      Your Answer: Phospholipase C

      Correct Answer: Phosphodiesterase

      Explanation:

      cAMP decomposition into AMP is catalysed by the enzyme phosphodiesterase.

    • This question is part of the following fields:

      • Cell Biology
      • Medicine
      16.1
      Seconds

  • Question 4 - The breakdown of superoxide is catalysed by which enzyme? ...

    Correct

    • The breakdown of superoxide is catalysed by which enzyme?

      Your Answer: Superoxide dismutase

      Explanation:

      As superoxide is toxic, nearly all organisms living in the presence of oxygen contain isoforms of the superoxide-scavenging enzyme superoxide dismutase, or SOD. SOD is an extremely efficient enzyme; it catalyses the neutralization of superoxide nearly as quickly as the two can diffuse together spontaneously in solution.

    • This question is part of the following fields:

      • Cell Biology
      • Medicine
      7.5
      Seconds

  • Question 5 - The processing of NH3 to urea occurs in: ...

    Incorrect

    • The processing of NH3 to urea occurs in:

      Your Answer: Rough endoplasmic reticulum

      Correct Answer: Mitochondria and cytoplasm

      Explanation:

      The urea cycle (also known as the ornithine cycle) is a cycle of biochemical reactions that produces urea ((NH2)2CO) from ammonia (NH3). The urea cycle consists of four enzymatic reactions: one mitochondrial and three cytosolic.

    • This question is part of the following fields:

      • Cell Biology
      • Medicine
      6.8
      Seconds

  • Question 6 - What is the function of gap junctions? ...

    Incorrect

    • What is the function of gap junctions?

      Your Answer: Fastening cells together

      Correct Answer: Diffusion of small molecules between neighbouring cells

      Explanation:

      Gap junctions are a specialized intercellular connection between a multitude of cell-types. They directly connect the cytoplasm of two cells, which allows various molecules, ions and electrical impulses to directly pass through a regulated gate between cells.

    • This question is part of the following fields:

      • Cell Biology
      • Medicine
      12.3
      Seconds

  • Question 7 - Regarding oxidative deamination of amino acids, which of the following is true? ...

    Incorrect

    • Regarding oxidative deamination of amino acids, which of the following is true?

      Your Answer: Is also called ubiquitination

      Correct Answer: Occurs in the kidney & liver

      Explanation:

      Oxidative deamination is a form of deamination that generates α-keto acids and other oxidized products from amine-containing compounds, and occurs largely in the liver and kidney. Oxidative deamination is an important step in the catabolism of amino acids, generating a more metabolizable form of the amino acid, and also generating ammonia as a toxic by-product. The addition of ubiquitin to a substrate protein is called ubiquitination.

    • This question is part of the following fields:

      • Cell Biology
      • Medicine
      7.7
      Seconds

  • Question 8 - Which intercellular connections are responsible for fastening the cells to one another? ...

    Incorrect

    • Which intercellular connections are responsible for fastening the cells to one another?

      Your Answer:

      Correct Answer: Hemidesmosomes, zonula adherens & desmosomes

      Explanation:

      There are three major types of cell junction:Adherens junctions, desmosomes and hemidesmosomes (anchoring junctions),Gap junctions (communicating junction) &Tight junctions (occluding junctions)

    • This question is part of the following fields:

      • Cell Biology
      • Medicine
      0
      Seconds

SESSION STATS - PERFORMANCE PER SPECIALTY

Cell Biology (7/7) 100%
Medicine (7/7) 100%
Passmed
Retry this test Dashboard