Karar's Exam Quiz. 2008 Quiz 1

19 Questions | Total Attempts: 104

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Karar

Aim going to keep trying this quiz till i get 100%


Questions and Answers
  • 1. 
    Consider the following plant cell .                                   the proccess occouring and W would be
    • A. 

      Packaging of molecules.

    • B. 

      Aerobic respiration

    • C. 

      Protien synthesis

    • D. 

      DNA replication

    • E. 

      None of the above

  • 2. 
    In this plant cell, the light-dependent reactions of photosynthesis occur in structure
    • A. 

      M

    • B. 

      N

    • C. 

      P

    • D. 

      W

    • E. 

      Q

  • 3. 
    The tertiary structure of a protein is represented by
    • A. 

      Structure A

    • B. 

      Structure B

    • C. 

      Structure C

    • D. 

      Structure D

    • E. 

      Structure D and A

  • 4. 
    The four main types of biomacromolecules in a cell are
    • A. 

      Monomers, polymers, DNA and RNA.

    • B. 

      Lipids,Protiens,Carbohydrates and Dna

    • C. 

      Nucleic acids, proteins, carbohydrates and lipids.

    • D. 

      Carbon,Hydrogen,Oxygen,Nitrogen

    • E. 

      None of the above

  • 5. 
    The enzyme maltase catalyses the breakdown of maltose into glucose. Maltase was added to a tube containing a solution of maltose in water and incubated at 37°C. The amount of glucose produced was monitored over a period of time. No maltose remained at the end. The graph showing the change in glucose concentration in the tube is
    • A. 

      Picture A

    • B. 

      Picture B

    • C. 

      Picture C

    • D. 

      Picture D

  • 6. 
    The following graph shows the relationship between light intensity and net oxygen uptake or output by a particular green plant. At a light intensity of 10 units  
    • A. 

      There is no connection between light intensity and photosynthesis

    • B. 

      The rate of photosynthesis is zero

    • C. 

      The rate of aerobic respiration is zero

    • D. 

      Oxygen produced by photosynthesis is equal to the oxygen used by aerobic respiration.

  • 7. 
    Glycogen is
    • A. 

      an Inhibitor to the enzyme pepsin.

    • B. 

      A polysaccharide found in animal cells.

    • C. 

      A waste product of photosynthesis.

    • D. 

      A polysaccharide found in plant cell walls.

    • E. 

      None of the above

  • 8. 
    Lipids characteristically
    • A. 

      are found in the mitochondria

    • B. 

      Catalyse reactions

    • C. 

      Store fat

    • D. 

      Are hydrophobic

    • E. 

      None of the above

  • 9. 
    The lymphatic system
    • A. 

      Controls blood clotting.

    • B. 

      Contains phagocytic cells.

    • C. 

      Contains red blood cells.

    • D. 

      Is not found in animals.

  • 10. 
    In a multicellular organism, the term ‘internal environment’ refers to the
    • A. 

      Cytoplasim

    • B. 

      The blood vessels

    • C. 

      The extracellular fluid

    • D. 

      A single cell in a multicellular organism

  • 11. 
    • A. 

      Answer A

    • B. 

      Answer B

    • C. 

      Answer C

    • D. 

      Answer D

  • 12. 
    Insulin is a complex protein that is said to have a quaternary structure. This means that insulin
    • A. 

      Has more then one polypeptide.

    • B. 

      It means Insulin can not be made of polypeptides

    • C. 

      Insulin can also have a functioning secondary structure

    • D. 

      Insulin is denatures

  • 13. 
    First-line defences that mammals have against invasion by disease-causing bacteria include
    • A. 

      Antibiotics

    • B. 

      Lysozymes

    • C. 

      Antibodies

    • D. 

      Killer T cells

  • 14. 
    Diphtheria is a disease caused by the bacterium Corynebacterium diphtheriae. A six-month old baby boy, whose mother and father both had diphtheria as children, will develop active immunity against diphtheria if he
    • A. 

      If both is father and mother were immunised as children

    • B. 

      If he recives an injection of dead diphtheria cells

    • C. 

      Receives injections of gamma globulin from the mother.

    • D. 

      Is being breast-fed by the mother.

  • 15. 
    Facilitated diffusion is a form of cell transport that
    • A. 

      Moves oxygen and carbon dioxide across membranes.

    • B. 

      Occurs against a concentration gradient.

    • C. 

      Uses energy supplied by ATP.

    • D. 

      Is not used by plant cells

    • E. 

      Requires specific protein channels.

  • 16. 
    The part of the virus labelled R is its
    • A. 

      Antigenic marker.

    • B. 

      Viral genome.

    • C. 

      Protien coat.

    • D. 

      Cell membrane.

    • E. 

      None of the above.

  • 17. 
    A typical characteristic of such a virus is that it
    • A. 

      Is destroyed by antibiotics.

    • B. 

      Manipulates the host cell’s DNA to produce copies of itself.

    • C. 

      Releases toxins into the body of the host.

    • D. 

      Evades detection by the host’s immune system.

  • 18. 
    • A. 

      Glucose and fructose are polysaccharides.

    • B. 

      The production of sucrose is an endergonic reaction.

    • C. 

      Sucrose is a reactant and glucose is a product of the reaction.

    • D. 

      A molecule of fructose contains more stored energy than a molecule of sucrose.

  • 19. 
    Activation energy in a biological reaction
    • A. 

      Is required by an enzyme to denature

    • B. 

      Is the energy needed to start a reaction

    • C. 

      Increases with an increase in temperature.

    • D. 

      Is involved in the formation of complex molecules only.

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