Unit 2 Lesson 5: Cell Work and Carbon Flashcards
What are the 2 main wats organsims produce energy
The two main ways organisms produce energy are through photosynthesis (the process by which autotrophs convert light energy into chemical energy) and cellular respiration. Both of these processes are also part of the carbon cycle.
The reactions taking place during photosynthesis occur in organelles in the plant’s cells called
chloroplasts
Chloroplasts contain chlorophyll, what is the tole of chlorophyll
Chloroplasts contain chlorophyll, which is the main structure that converts light energy to chemical energy.
What is cellular respiration
Cellular respiration is the process in which living things break down sugars to produce energy.
What is ATP
ATP is the energy molecule of the cell that powers many other reactions.
Can plants use cellular repsiraiton if so when
plants have mitochondria and can perform cellular respiration in times when sunlight is not present. The glucose produced at the end of photosynthesis is used in the cellular respiration pathway
where does cellular respiaration take poace in huimans
cytoplasm
Where does photosynthesis take place in a plant?
Photosynthesis takes place in organelles called chloroplasts located inside of plant cells.
What conclusion can be made about the involvement of photosynthesis in the cycling of carbon in the carbon cycle?
Photosynthesis takes in carbon from the atmosphere and converts it into glucose, a carbon-containing compound. This reduces the amount of carbon dioxide in the atmosphere. Plants and other producers are carbon sinks – they store carbon.
What is the relationship, in terms of carbon cycling, between photosynthesis and cellular respiration?
Photosynthesis takes in carbon dioxide from the atmosphere and converts it into glucose, which is a carbon sugar. Cellular respiration breaks down glucose to release its energy. At the same time, carbon dioxide is also released. The reactants of one process are the products of the other.
What is the importance of plants having large leaves in the tropical rainforests?
Plants in the tropical rainforest have such large leaves because they need to collect as much sunlight as possible. Those leaves close to the forest floor are shaded by the thick canopy of taller trees, so they do not get much sunlight. Having large, wide leaves increases their chances of capturing light for photosynthesis.
From where does the oxygen produced by photosynthesis arise?
The oxygen produced as a by-product of photosynthesis originates from the water molecules used in the reaction.
Where are the stomata located on a plant? Why are they located there?
The stomata are located on the undersides of the plant leaves. This is to keep rain and other materials from falling into them.
How does photosynthesis relate to the cycling of carbon through the environment?
Plants take in carbon dioxide from the atmosphere and separate the carbon and the oxygen. The carbon combines with other elements (specifically oxygen and hydrogen) to form a carbon-containing molecule called glucose. The glucose is then broken down to release the energy it contains.
How does photosynthesis compare with cellular respiration in terms of carbon cycling?
Photosynthesis is how most of the carbon is removed from the atmosphere and brought into the other reservoirs (like the oceans, soil, and terrestrial biosphere). This process takes carbon dioxide from the atmosphere and converts it into glucose, which plants use for energy. Cellular respiration breaks apart glucose to release the energy it contains. The products of one reaction are the reactants of the other, so carbon is constantly being cycled through ecosystems.
