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PS and CR exam rev

photosynthesis and cellular respiration exam review

QuestionAnswer
what is photosynthesis? process where plants and other photosynthetic organisms use the sun's energy and convert it into chemical energy
which organelle is responsible for photosynthesis? chloroplast
what is cellular respiration? when organisms use energy and oxygen to break down food into ATP
which organelle is responsible for cellular respiration? mitochondria
what is chlorophyll? a pigment within a plant that captures energy from sunlight
why do things appear a certain color? objects absorb some colors but reflect others. The color that is REFLECTED is what is seen.
what is the formula (unbalanced) for photosynthesis? carbon dioxide + water --> glucose + oxygen
what is the formula (unbalanced) for cellular respiration? glucose + oxygen --> carbon dioxide + water
where do plants get the carbon dioxide they need to do photosynthesis? it is emitted from organisms doing cellular respiration or from human's burning fossil fuels
where does the oxygen come from in the photosynthesis equation? water is split and its electrons are donated to the electron transport chain. When this happens oxygen is released.
where does the glucose come from in the photosynthesis equation? it is made during the calvin cycle
what is the calvin cycle? the part of photosynthesis that occurs in the thylakoid membrane (part of the chloroplast) that converts light energy into chemical energy (glucose)
what is chemiosmosis? when a gradient of hydrogen ions (protons) allows those protons to fall through the ATP synthtase pump which provides the pump with energy to make ATP.
how is ATP made? when a phosphate group is added to ADP by the ATP synthetase pump
what are the stages of photosynthesis? the light reaction, electron transport chain, and the calvin cycle
what are the stages of cellular respiration? glycolysis, electron transport chain and krebs cycle
what products are made during the light cycle of photosynthesis? ATP and NADPH (an electron carrier)
what is the ATP made during the light cycle of photosynthesis used for? it is used in the calvin cycle to create carbohydrates (glucose)
what is another term used to describe the electron transport chain and the krebs cycle? aerobic respiration (because they require oxygen)
what is the name of the process that occurs when there is no oxygen present but organic compounds are still being broken down? fermentation
what is a byproduct of fermentation within humans? lactic acid
where is most of the ATP made during cellular respiration? the electron transport chain
what is an autotroph? an organism that does photosynthesis or chemosynthesis (makes it own food)
what is a heterotroph? a consumer
what is glycolysis? the first step of cellular respiration which involves glucose being split into smaller molecules
why do plants have both chloroplasts and mitochondria? so that they can do photosynthesis and create glucose and then break that glucose down into ATP. That ATP will then be used for the plant to grow.
Created by: ruth.baker