Week 30s Revision
Quiz by edel kinsella
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43 questions
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- Q1Understand that all energy ultimately comes from the sun.FalseNot sureTrueMaybe30s
- Q2Define photosynthesis.RespirationPhotosynthesis is the process by which green plants and some other organisms use sunlight to synthesize foods with the help of chlorophyll.CirculationDigestion30s
- Q3State where photosynthesis occurs in a plant.FlowerRootsPhotosynthesis occurs in the chloroplasts of plant cells.Stem30s
- Q4Write the word and chemical equation for photosynthesis.6CO2 + 6H2O + Light energy -> C6H12O6 + 6O2C6H12O6 + O2 -> CO2 + H2O6H2O + 6O2 -> C6H12O6 + 6CO2H2O + CO2 -> O2 + C6H12O630s
- Q5State where carbon dioxide enters the plant.Through the rootsCarbon dioxide enters the plant through small openings on the underside of leaves called stomata.Through the stemThrough the flowers30s
- Q6Name the green pigment found in the chloroplast and its role in photosynthesis.CaroteneChlorophyll is the green pigment found in chloroplasts, and it is essential for capturing light energy during photosynthesis.MelaninHemoglobin30s
- Q7Name 3 factors that influence the rate of photosynthesis.Soil type, water availability, nutrientsTime of day, cloud cover, plant ageLight intensity, temperature, and carbon dioxide concentration are factors that influence the rate of photosynthesis.Humidity, wind, pH level30s
- Q8Describe an experiment that investigates the effect of light intensity on the rate of photosynthesis.Watering the plant at different timesChanging the temperature of the roomAdding more carbon dioxide to the airOne 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
- Q9Describe photosynthesis as a biological and chemical process.Photosynthesis is a physical process involving light absorptionPhotosynthesis is a random occurrence in naturePhotosynthesis is a mechanical process in plant cellsPhotosynthesis 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
- Q10Understand that all energy ultimately comes from the sunMaybeNot SureTrueFalse30s
- Q11What 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
- Q12What 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
- Q13What 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
- Q14What 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
- Q15What 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