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Photosynthesis (Bio)

Test 2

QuestionAnswer
What is photosynthesis? is the process that converts solar energy into chemical energy.
Autotrophs do what? sustain themselves without eating other organisms.
Autotrophs= producers.
Heterotrophs= consumers.
Fossil fuels formed from what? the remains of organisms that died hundred of millions of years ago.
Photosynthesis converts what to what? light energy to the chemical energy of food.
What is the formula for photosynthesis? 6 CO2 + 12 H20 + light --> C6 H12 O6 + 6O2 + 6 H20.
How do gasses (carbon dioxide and oxygen) enter and leave the plant? stomata.
What plant structure absorbs water? roots.
How does water move from roots to leaves? adhesion and cohesion.
Leaves are the major locations of what? photosynthesis.
Chloroplasts are what? solar-powered chemical factories.
The chloroplasts' thylakoids do what? transform light energy into the chemical energy of ATP and NADPH.
What is a wavelength? is the distance between crests of waves.
Wavelength determines what? the type of electromagnetic energy.
Photosynthesis is what kind of process? endergonic.
Red, martians, invaded, venus, using, x-ray, guns? radio, microwaves, infared, visible wavelengths, UV, X-ray, Gamma.
What are pigments? substances that absorb light.
Light reactions happen where? in the thylakoids.
Calvin cycle happens where? in the stroma.
Calvin cycle forms what from what? sugar from CO2.
The calvin cycle uses what? ATP and NADPH from light cycle.
Light reactions reduce what? NADP+ to NADPH.
Light reactions generate ATP from ADP by what? photophosphorylation.
A photosystem consists of what? a reaction center complex, surrounded by light harvesting complexes.
What are the two photosystems in the thylakoid membrane? photosystem II (PS II) & photosystem I (PS I).
Photosystem II (PS II) functions when? first.
During the light reactions, 2 possible routes for electron flow are what? cyclic & linear.
Cyclic electron flow uses what? only photosystem I.
Cyclic electron flow produces what? ATP and no NADPH.
Linear electron flow involves what? both photosystems.
Linear electron flow produces what? ATP and NADPH.
What are the two stages of photosynthesis? 1. light reactions (the photo part) & 2. calvin cycle (the synthesis part).
The calvin cycle carbon enters as what? CO2.
In the calvin cycle CO2 leaves as a sugar named what? glyceradldehyde 3- phosphate (G3P).
What are the three phases of the calvin cycle? carbon fixation, reduction, regeneration of the CO2 acceptor (RuBP).
In photosynthesis the energy entering chloroplasts as sunlight gets stored as what? chemical energy in organic compounds.
Sugar made in the chloroplasts supplies chemical energy and carbon skeletons to synthesize what? the organic molecules of cells.
Plants store excess sugar as what? starch in structures such as roots, tubers, seeds, and fruits.
The light reaction of photosynthesis does not include what? oxygen liberation.
The final product of the calvin cycle is what? G3P.
Photosynthesis takes place in the membrane of small sacs called? thylakoids.
The dark reaction in photosynthesis is limited by? CO2, temperature, and light.
Colors of light most useful in photosynthesis are what? red, violet, and blue.
During what stage of photosynthesis is O2 produced? the light-dependent reactions involving photosystems I and II.
The pigment molecules responsible for photosynthesis are located in the? thylakoid membrane of the chloroplast.
Both carotenoids and chlorophylls are? pigments.
During what stage of photosynthesis are ATP and NADPH converted to ADP + PI and NADP+? the light-independent reactions.
Water vapor exits and CO2 enters a leaf through the? stomata.
What energy-rich organic compound is produced as a result of the calvin cycle? glucose.
High-energy photons have what? short wavelengths.
During photosynthesis, photons raise electrons to higher energy levels. These excited electrons belong to what compound? chlorophyll.
What happens during light-dependent reactions of plants? electron transport, chemiosmosis, and splitting of water.
The oxygen that is released as O2 during photosynthesis came from what kind of molecules? water.
How many carbon atoms are in a molecule of RuBP? five.
Production of one molecule of 3- phosphoglyceraldehyde requires how many turns of the calvin cycle? three.
The primary form of sugar transported from the site of photosynthesis to the rest of the plant is? sucrose.
Rubisco initiates what? photorespiration when CO2/O2 ratio is low.
CO2 fixation occurs within the stroma. True or False? True.
For every CO2 molecule fixed by photosynthesis, one molecule of O2 is produced. True or False? True.
Light is required for light dependent reactions because? it energizes electrons in the reaction center.
CO2 _____ and O2 _____ the leaf. enters; leaves.
Gasses move through microscopic pores called what? stomata.
The chlorophyll is in the membranes of what? thylakoid.
Chloroplasts also contain what? stroma.
Created by: danreid
 

 



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