A student covered the leaves of a plant with aluminum foil for three days while exposing the rest of the plant to sunlight. Which process was most likely affected?, Water absorption by the roots, Mineral transport in the stem, Photosynthesis in the chloroplast, Cellular respiration in the mitochondria, A scientist discovered a cell organelle that contains chlorophyll and produces glucose using sunlight. Which conclusion is most accurate?, The organelle performs photosynthesis, The organelle stores food for the cell, The organelle is responsible for breaking down glucose., The organelle only exists in animal cells., During an experiment, a student placed one plant in sunlight and another in complete darkness while keeping the amount of water, soil, and temperature the same. Which variable is the independent variable?, Soil type, Plant growth, Amount of water, Exposure to sunlight, A plant is healthy but cannot produce enough glucose because it lacks chlorophyll. Which outcome is most likely?, The plant will absorb more oxygen to make glucose., Photosynthesis will decrease because light cannot be absorbed efficiently., Cellular respiration will stop immediately., The mitochondria will produce more chlorophyll., A runner eats a meal rich in carbohydrates before a race. Which organelle will primarily release the energy stored in the glucose from the food?, Chloroplast, Cell membrane, Nucleus, Mitochondria, A student concludes that "plants need sunlight to produce glucose" after observing the results of an experiment. Which step of the scientific investigation does this represent?, Analyze the results, Conduct an experiment, Share the conclusion, Make a hypothesis, A group of students wants to know whether the amount of sunlight affects the rate of photosynthesis. Which of the following should they measure as the dependent variable?, Amount of oxygen produced, Number of hours of sunlight, Type of plant used, Amount of water given, Two identical plants were grown under the same conditions except that one received carbon dioxide while the other did not. If the plant without carbon dioxide produced less glucose, what can be inferred?, Carbon dioxide increases cellular respiration directly., Carbon dioxide is produced only during photosynthesis., Carbon dioxide is a raw material needed for photosynthesis., Carbon dioxide is the source of chlorophyll., A student claims that chloroplasts and mitochondria perform the same function because both are found in plant cells. Which statement best evaluates the student's claim?, The claim is incorrect because chloroplasts make glucose, while mitochondria break down glucose to release energy., The claim is correct because both organelles contain chlorophyll., The claim is correct because both organelles produce glucose., The claim is incorrect because mitochondria are only found in animal cells., A student performed an experiment to determine whether light intensity affects photosynthesis but used different plant species for each setup. Why might the results be unreliable?, The independent variable became the amount of oxygen produced, The hypothesis automatically becomes incorrect., Different plant species introduce another variable that could affect the results., Different plant species always photosynthesize at the same rate.

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