LESSON 1
Key Concept Builder
Energy Processing in Plants
Key Concept What is cellular respiration?
Directions: On the line before each statement, write T if the statement is true or F if the statement is false. If the
statement is false, change the underlined word(s) to make it true. Write your changes on the lines provided.
1. Energy is required by all organisms for life.
2. Cellular respiration converts energy from the Sun into food molecules,
3. Glucose molecules are broken down into carbon and oxygen.
4. The process of cellular respiration is necessary for a plant to grow and
reproduce.
5. Cellular respiration takes place in chloroplasts.
6. Cellular respiration requires water and produces carbon dioxide as a waste
product.
7. Cells must be able to break down glucose because the energy stored in it is too
powerful for cells to use it all at once.
8. The chemical bonds in food molecules provide energy for life.

9. The ability of a plant to repair tissue depends on cellular respiration.
10. Cellular respiration involves a series of chemical reactions.
11. ATP molecules result from the breakdown of water and oxygen.
12. Cellular respiration can occur without photosynthesis.
Plant Processes

answer: - b cells

explanation: -

so, the b cells mediate their action by identifying the antigens present on the surface of the pathogens and then producing antibodies in return to mediate its effect.

he movement of air through earth's or any planet's atmosphere is called wind, and the main cause of earth's winds is uneven heating by the sun. this uneven heating causes changes of atmospheric pressure, and winds blow from regions with high pressure to those with low pressure.

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it provides an alternative energy pathway for the reaction to proceed.

a catalyst is a substance that speeds up the rate of a chemical reaction but is not consumed during the course of the reaction.

catalysts increase the rate of reaction without being used up. they do this by lowering the activation energy needed. with a catalyst, more collisions result in a reaction, so the rate of reaction increases. different reactions need different catalysts.

a catalyst works by providing an alternative reaction pathway to the reaction product. the rate of the reaction is increased as this alternative route has a lower activation energy than the reaction route not mediated by the catalyst.