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Chapter 10 Biology
Photosynthesis
Question | Answer |
---|---|
What's the definition of autotrophic nutrition? | sustain themselves without eating anything derived from other organisms |
Is autotrophic nutrition considered to be the consumer or the producer of the biosphere? | producer |
What is a good example of an autotrophic nutrition? | plants because they use the energy of sunlight to make oranic molecules from water and crbon dioxide, and sustain themselves without eating anything derived from other organisms |
What's the definition of heterotrophic nutrition? | obtain their organic material from other organisms. |
Is heterotrophic considered to be the consumer or the producer of the biosphere? | consumer |
What is a good example of heterotrophic nutrition? | humans because they depend on photoautotroph for food and oxygen |
Where might chloroplasts be found? | in cells of the mesophyll, the interior tissue of the leaf |
How many chloroplasts does a typical mesophyll have? | 30-40 |
_______ are the major locations of photosynthesis / and why? | leaves because they're green in color because of the chlorophyll. It's the green pigment within chloroplasts |
Chlorophyll absorbs ______ energy that's converted into the ______ energy. | light, chemical |
Where might clorophyll be found? | it's in the membranes of thylakoids (connected sacs in the chloroplast). |
Thylakoids may be stacked in columns called _______. | grana |
Chloroplasts contain stroma which is a dense _____. | fluid |
Write the summary equation for photosynthesis. | 6CO2 + 12H20 + light energy__C6H1206 + 6CO2 |
What is the end result in photosynthesis? | oxygen and water in a chemical reaction |
What are the two stages of photosynthesis? | the light reactions (the photo part) nd Calvin cycle (synthesis part) |
What happens in the light reaction stage of photosynthesis? | in the thylakoids, split water, release O2, produce ATP, and form NADPH |
What happens in the Calvin Cycle in photosynthesis stage? | sugar is formed from CO2, using ATP and NADPH |
What is the first step when you trace the movement of electrons in linear electron flow? | a photon hits a pigment and its energy is passed among pigment molecules until it excites P680 |
What is the second step when you trace the movement of electrons in linear electron flow? | An excited electron from P680 is transferred to the primary electron acceptor |
What is the last step when you trace the movement o electrons in linear electron flow? | 02 is released as a by-product of this reaction |
Cyclic electron flow uses only ___ ___ ___ and produces ATP, but not NADPH. | photo system 1 |
What is the primary objective for the cyclic electron flow? | to generate a surplus of ATP which satisfies the high demand in thr Calvin cycle, and may protect cells from light-induced damage |
Chloroplasts and ___ generate ATP by chemiosmosis, but use different sources of energy | mitochondria |
Where does the Calvin cycle take place? | on the side facing the stroma |
What is produced on the side facing the stroma? | ATP and NADPH |
Where does the citric acid cycle occur in the cell? | inside the mitochondria |
The chloroplast molecule that absorbs light energy is _____. | chlorophyll |
What is the function of the NADP+? | to pick up free hydrogen ions and electrons to carry them into the cell |
A red dress appears red because the red portion of the light that strikes it ____. | is reflected |
What are the products of respiration? | carbon dioxide and water |
In order for muscles to contract in your body, you need ____. | energy |
Ribose, adenine and two phosphate groups combine to make ___. | ADP |
Why must plants have a constant source of carbon dioxide? | it is utilized in the process of photosynthesis to make glucose |
At the end of glycolysis, what is the amount of ATP? | gain of 2 ATPs |
At the end of the electron transport chain, the final electron acceptor is _____. | hydrogen |
What reation breaks down glucose to release energy? | lactic acid fermentation |