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Plasma membranes Week 1 QUIZ 2020

Quiz by Joshua McQuade

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23 questions
Show answers
  • Q1
    The movement of proteins throughout a plasma membrane can be explained by
    the active transport of proteins across the plasma membrane
    the fluid mosaic model
    the presence of cholesterol
    movement due to osmosis
    60s
  • Q2
    A section of the plasma membrane the spans both sides of the bilayer and allows for the transport of larger ions is called
    cholesterol molecule
    Integral protein
    phospholipid molecule.
    glycoprotein molecule
    60s
  • Q3
    The structure labelled X in the molecule is:
    Question Image
    a disaccharide.
    an amino acid group.
    a fatty acid.
    a protein.
    60s
  • Q4
    Ribosome [VCAA 2001 Exam]
    are the site of protein synthesis
    are the site where proteins are modified and packaged.
    are the site of rapid ATP synthesis.
    are found only in animal cells
    60s
  • Q5
    The packaging and transport of biomolecules within a cell involves their:
    transport by Golgi apparatus to the endoplasmic reticulum.
    transport from the plasma membrane into the cytosol by secretory vesicles.
    movement from the ribosomes into the endoplasmic reticulum.
    distribution through a series of microfilaments.
    60s
  • Q6
    The Golgi apparatus of a cell:
    packages and modifies proteins.
    is call 'rough' when ribosomes are attached to its surface.
    is the site of rapid ATP production.
    is found only in animal cells.
    60s
  • Q7
    Proteins are made of:
    one or more poly peptides which are formed from a chain of fatty acids.
    one or more polypeptides which are formed from a chain of amino acids.
    one or more nucleotide strands.
    one or more amino acids which are formed from a chain of polypeptides.
    60s
  • Q8
    Which of the following best describes the structure of DNA?
    Two strands of RNA nucleotides held together by bonds between phosphate units
    Two strands of DNA nucleotides held together by bonds between nitrogen bases
    Two strands of DNA nucleotides held together by bonds between deoxyribose sugar units
    Two strands of DNA nucleotides held together by bonds between phosphate units
    60s
  • Q9
    In DNA, the number of: [2003 exam]
    phosphate groups equals twice the number of sugar molecules.
    adenine nucleotides equals the number of cytosine nucleotides.
    phosphate groups equals the number of nitrogen bases.
    guanine nucleotides equals the number of uracil nucleotides.
    60s
  • Q10
    The base composition of the DNA of a particular bacterium was analysed. It was found that 18 per cent of the bases were adenine. You could reasonably conclude that: [2001 exam]
    the DNA comprised 18 per cent adenine-thymine pairs.
    36 per cent of the bases were thymine.
    the DNA comprised 32 per cent of cytosine-guanine pairs.
    32 per cent of the bases were cytosine.
    60s
  • Q11
    The nucleotide found in messenger RNA but not in DNA is:
    guanine.
    cytosine.
    adenine.
    uracil.
    60s
  • Q12
    The following data represents a small section of a sequence of bases of a nucleic acid taken from an animal cell. GCUCGUU… From this data it is reasonable to assume that the seven bases:
    would lead to the production of a chain of sevin amino acids.
    would be complementary to the sequence CGTGCTT.
    would be from DNA.
    must contain the sugar ribose.
    120s
  • Q13
    A student set up an experiment with a semi permeable membrane. The membrane was not permeable to sucrose. At the beginning of the experiment the same amount of water was added to both sides of the membrane. The student then added sucrose to the left side of the membrane as shown in the following diagram. You would expect that:
    Question Image
    The level of water to rise on the right of the membrane
    The level of water to remain unchanged on both sides of the membrane
    The concentration of sucrose to increase on the right side of the membrane
    The level of water to rise on the left of the membrane
    120s
  • Q14
    The plasma membrane of a cell
    Allows substances to pass through only by active transport
    Is relatively impermeable to large water soluble molecules due to the presence of the lipid bilayer
    Is inflexible due to the presence of protein molecules
    Contains cholesterol molecules which can act as cell receptors
    120s
  • Q15
    A plant cells was placed in a sucrose solution and changes within the cell were observed. From the information in the diagrams you can conclude that while the cell was in the sucrose solution
    Question Image
    The vacuole membrane was impermeable to water molecules
    Water molecules passed through the cell membrane
    The cell wall was impermeable to water molecules
    Sucrose molecules passed through the cell membrane
    120s

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