click below
click below
Normal Size Small Size show me how
Photosynthesis
Photosynthesis - CSCC
| Question | Answer |
|---|---|
| What useful product is formed after six turns of the Calvin Cycle? | Glucose |
| Photosynthesis occurs in all cells of a plant. A) True B) False | False |
| Chlorophyll pigments are grouped together in the membranes of _____________. | thylakoids |
| A green leaf reflects ___________ of the visible spectrum. | green wavelengths |
| Molecules that absorb light energy are called ____________. | pigments |
| Plants need light to use ATP to synthesize plant molecules from carbon dioxide in the air.A) True B) False | False |
| Each photosystem consists of many chlorophyll molecules and several reaction centers.A) True B) False | False |
| The starting point of photosynthesis is the | photosystem |
| Electrons in pigment molecules become excited when exposed to | photons of light |
| Photosystem I captures the energy that is used to produce the ATP needed to build sugar molecules. A) True B) False | False |
| The photosystems are replenished with electrons obtained by the splitting of ___ molecules. | water |
| About 25% of the radiant energy from the sun that reaches the earth each day is captured by photosynthesis.A) True B) False | False |
| Plants use chlorophyll to absorb primarily the green band of the visible spectrum. A) True B) False | False |
| The process of chemiosmosis is for making molecules of | ATP |
| Photorespiration involves the competitive inhibition of the enzyme rubisco, effectively short circuiting the light dependent reactions of photosynthesis. A) True B) False | False |
| A waste product of the light-dependent reactions is | oxygen |
| Carbon fixation attaches a carbon atom that was in a gas into an organic molecule. A) True B) False | True |
| C4 photosynthesis involves only light-independent reactions for plants in hot climates. A) True B) False | False |
| Photosynthesis occurs in which of the following? A) bacteria B) algaeC) plantsD) all of the above | D) all of the above |
| In a high school biology class, students observe that plants grown with a green filter in front of the light source grow better than plants with a red filter in front of the light source. Why is this? | plants do not absorb the green wavelengths of light for photosynthesis |
| The energy that is used by almost all living things on our planet comes from the sun. It is captured by plants, algae, and some bacteria through the process of | photosynthesis. |
| Plants capture sunlight | with molecules called pigments that absorb photons and use their energy |
| Visible light occupies what part of the electromagnetic spectrum? | a small portion in the middle of the spectrum |
| The colors of light that are most effective for photosynthesis are | red, blue, and orange |
| Once a plant has initially captured the energy of a photon | A)a series of reactions occurs in chloroplast membranes of the cell. B)the energy is transferred through several steps into a molecule of ATP. C)several pigments, including two kinds of chlorophyll, may be involved. D) all of the above are true |
| Plants use two photosystems to capture energy used to produce ATP and NADPH. The electrons used in these photosystems | only go through the system once; they are obtained by splitting a water molecule. |
| During photosynthesis, ATP molecules are generated by | chemiosmosis |
| NADPH is recycled during photosynthesis. It is produced during the ________ and used in the_________. | electron transport system of photosystem II, Calvin cycle |
| The overall purpose of the Calvin cycle is to | build sugar molecules. |
| Many plants cannot carry out the typical C3 photosynthesis in hot weather, so some plants | use C4 photosynthesis or CAM |