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Biology CH8SEC1
Quiz Review
| Question | Answer |
|---|---|
| What is Phosphorylation? | adding a phosphate (negatively charged) |
| How do you form AMP? | only a small amount of energy is needed to bond phosphates (small energy stored) |
| How do you form ADP? | requires more energy to force phosphates together than to form AMP (moderate energy stored) |
| How do you for ATP? | great amount of energy is needed to bond phosphates - endergonic reaction (large amount of energy stored) |
| What is Dephosporylation? | release of phosphate (bond between the 2nd and 3rd phosphates is broken to release energy) |
| What is Exergonic reaction? | energy released for cell metabolism |
| What is the importance of the ATP cycle? | relieves cell of having to store all the ATP it needs at once |
| What is the importance of ADP? | can also be used as an energy source |
| Why do we see color? | - Light is made up of wavelengths of light - The color we see is a result of which wavelengths are reflected back to our eyes |
| What color does chlorophyll absorb well and not absorb well? | - absorbs blue-violent and red well - does not absorb green well |
| Why do leaves change color? | - when the water supply is cut off to the leaves during the fall the chlorophyll begins to breakdown - pigments of the other colors are not visible |
| What is photosynthesis? | process that uses the sun's energy to make simple sugars |
| What is Photosystem? | - a pigment complex (contains chlorophyll a & b & carotenoids) and electron acceptors - Photosystem II & I - absorb solar energy that gets bounced around pigments until concentrated into a pair of chlorophyll a ( reaction center) |
| What is Chemiosmosis? | the generation of ATP by the movement of hydrogen ions across a membrane (in the thylakoid) during photosynthesis (occurs in cell respiration) |
| What is created during photosynthesis? | high-energy carbohydrates such as sugars and starches are created |
| Where does photosynthesis occur? | chloroplast |
| What is the fluid portion outside of saclike membrane? | stroma |
| What is the formula to photosynthesis in words? | Carbon Dioxide + Water -> Sugars + Oxygen |
| Describe Light Dependent Reactions: | - produce energy- rich compounds (NADPH) - takes place in the thylakoids - water is required as a source of electrons and hydrogen oxygen is released as the byproduct |
| Describe Light Independent Reactions: | - takes place in the stroma - cabrondioxide must come in from the atmosphered - ATP & NADPH produced in the first reactions used - produces carbon - containing sugrars and other carbohydrates |
| ATP | compound used by cells to store and release energy |
| Pigment | light absorbing molecule used by plants to gather the sun's energy |
| NADPH+ | carrier molecule that transfers high-energy electrons from chlorophyll to other molecules |
| Calvin Cycle | light-independent reactions of photosynthesis in which energy from ATP and NADPH is used to build high-energy compounds such as sugar |
Created by:
gabriella_peralta26
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