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IB Reveiw: 1.1 and 1.5

Quiz by Texel, Sarah J

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13 questions
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  • Q1
    Stargardt’s disease, a genetic disorder that causes vision loss, is being treated using retinal cells derived from human embryonic stem cells. Why are embryonic stem cells used?
    They are able to differentiate into the required cell type.
    There are no ethical issues concerning their use.
    They are already specialized for this function.
    They retain stem cell properties after specialization.
    30s
  • Q2
    Which method provides biochemical evidence that cells have begun to differentiate?
    Analysis of the proteins
    Observation with an electron microscope
     Examination of the DNA sequence
    Observation with a light microscope
    30s
  • Q3
    What feature of both striated muscle and aseptate fungal hyphae is different from typical cell structure?
    They have plasmids.
    They have an absence of cholesterol in the plasma membrane.
    They have a cell wall that is not made of cellulose.
    They have multiple nuclei within a structural unit.
    30s
  • Q4
    When compared to other body cells, which characteristic of stem cells is the most important for therapeutic uses?
    Less excretion
    Lower rate of reproduction
    Less differentiation
    Lower rate of metabolism
    30s
  • Q5
    Pasteur carried out a series of experiments that provided strong evidence against a widely supported theory. What was this theory?
    Evolution
    Spontaneous generation
    Endosymbiosis
    Conservative replication of DNA
    30s
  • Q6
    Which functions of life are carried out by all unicellular organisms?
    Reproduction, ventilation, response and nutrition
    Response, homeostasis, metabolism and growth
    Response, homeostasis, metabolism and growth
    Response, homeostasis, growth and photosynthesis
    30s
  • Q7
    Why do multicellular organisms have emergent properties?
    They show properties that can only result from the interaction of many cells.
    All of their genes are expressed whereas unicellular organisms express only some.
    Properties of unicellular organisms are enhanced by having many cells.
    They have more genes than unicellular organisms.
    30s
  • Q8
    What happens to the cell surface area to volume ratio as a cell grows?
    It increases, so osmosis is reduced.
    It increases, so mineral ion absorption is increased.
    It decreases, so rate of gas exchange is too low.
     It decreases, so production of waste material is reduced.
    30s
  • Q9
    Which sequence shows increasing relative size?
    Question Image
    C
    D
    B
    A
    30s
  • Q10
    In a copy of Louis Pasteur’s famous experiment, broth was put into flasks as shown in the diagrams. What results would be expected with no spontaneous generation of life?
    Question Image
    Decomposition of broth by microbes occurred only in Flasks W and X.
    Decomposition of broth by microbes occurred only in Flask W.
    Decomposition of broth by microbes occurred only in Flasks W, X and Z.
    Decomposition of broth by microbes occurred only in Flasks W, X and Y.
    30s
  • Q11
    What can be deduced about a striated muscle fibre from both of these statements?"A eukaryotic cell has one nucleus." "A striated muscle fiber has many nuclei."
    It is preparing to divide.
    It is prokaryotic.
    It consists of aseptate hyphae.
    It is an exception to cell theory.
    30s
  • Q12
    Which graph represents the change in cell surface area to volume ratio with increasing cell diameter?
    Question Image
    B
    A
    D
    C
    30s
  • Q13
    The statement relates to Pasteur’s experiments. What did this statement suggest?
    Question Image
    Nutrients are a requirement for mold growth.
    Mold evolved by endosymbiosis.
    Cells can only be formed by division of pre-existing cells
    Oxygen is required for anaerobic respiration.
    30s

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