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Week 30s Revision

Quiz by edel kinsella

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43 questions
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  • Q1
    Understand that all energy ultimately comes from the sun.
    False
    Not sure
    True
    Maybe
    30s
  • Q2
    Define photosynthesis.
    Respiration
    Photosynthesis is the process by which green plants and some other organisms use sunlight to synthesize foods with the help of chlorophyll.
    Circulation
    Digestion
    30s
  • Q3
    State where photosynthesis occurs in a plant.
    Flower
    Roots
    Photosynthesis occurs in the chloroplasts of plant cells.
    Stem
    30s
  • Q4
    Write the word and chemical equation for photosynthesis.
    6CO2 + 6H2O + Light energy -> C6H12O6 + 6O2
    C6H12O6 + O2 -> CO2 + H2O
    6H2O + 6O2 -> C6H12O6 + 6CO2
    H2O + CO2 -> O2 + C6H12O6
    30s
  • Q5
    State where carbon dioxide enters the plant.
    Through the roots
    Carbon dioxide enters the plant through small openings on the underside of leaves called stomata.
    Through the stem
    Through the flowers
    30s
  • Q6
    Name the green pigment found in the chloroplast and its role in photosynthesis.
    Carotene
    Chlorophyll is the green pigment found in chloroplasts, and it is essential for capturing light energy during photosynthesis.
    Melanin
    Hemoglobin
    30s
  • Q7
    Name 3 factors that influence the rate of photosynthesis.
    Soil type, water availability, nutrients
    Time of day, cloud cover, plant age
    Light intensity, temperature, and carbon dioxide concentration are factors that influence the rate of photosynthesis.
    Humidity, wind, pH level
    30s
  • Q8
    Describe an experiment that investigates the effect of light intensity on the rate of photosynthesis.
    Watering the plant at different times
    Changing the temperature of the room
    Adding more carbon dioxide to the air
    One experiment involves exposing a plant to different light intensities (bright light, dim light, darkness) and measuring the rate of oxygen production through photosynthesis using a gas syringe.
    30s
  • Q9
    Describe photosynthesis as a biological and chemical process.
    Photosynthesis is a physical process involving light absorption
    Photosynthesis is a random occurrence in nature
    Photosynthesis is a mechanical process in plant cells
    Photosynthesis is a biological process in which plants convert sunlight into energy through a series of chemical reactions, resulting in the production of glucose and oxygen.
    30s
  • Q10
    Understand that all energy ultimately comes from the sun
    Maybe
    Not Sure
    True
    False
    30s
  • Q11
    What is an exothermic reaction?
    A reaction in which energy is absorbed by the chemicals from the surroundings.
    A reaction where no energy is involved.
    A reaction in which energy is stored within the reactants.
    A reaction in which energy is transferred from the chemicals to the surroundings.
    30s
  • Q12
    What is endothermic reaction?
    A reaction where energy is absorbed by the chemicals from the surroundings in order for the reaction to take place.
    A reaction in which energy is neither absorbed nor released.
    A reaction in which energy is transferred from the chemicals to the surroundings.
    A reaction that occurs without any energy input.
    30s
  • Q13
    What happens during a chemical reaction?
    Only old bonds are formed.
    No bonds are broken or formed.
    Old bonds are broken and new bonds are formed.
    Only new bonds are broken.
    30s
  • Q14
    What is activation energy?
    The total energy released in a reaction.
    The energy stored in the products after a reaction.
    The energy used to break bonds in a reaction.
    The minimum energy that colliding particles must have for a reaction to occur.
    30s
  • Q15
    What do energy profile diagrams show in chemical reactions?
    The energy stored in the reactants compared to the energy stored in the products.
    The color changes in the chemicals.
    The temperature change in the surroundings.
    The volume of reactants and products.
    30s

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