Campbell Essential Biology with Physiology (6th Edition)
6th Edition
ISBN: 9780134711751
Author: Eric J. Simon, Jean L. Dickey, Jane B. Reece
Publisher: PEARSON
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Chapter 7, Problem 14PS
Summary Introduction
To determine:
The oxygen atoms in the glucose produced by photosynthesis come from H2O or from CO2 by using radioactive isotope.
Introduction:
Photosynthesis is a process in which plant absorbs solar light energy to convert it into chemical energy. Two cycles are present in photosynthesis: light cycle and dark cycle. The light cycle takes place in thylakoid of chloroplast while the dark cycles take place in the stroma of chloroplast. In the dark cycle, the carbon dioxide from environment react with the water in presence of product of a light reaction cycle (ATP and NADPH) to form sugar (glucose) and oxygen gas evolves from the reaction.
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“Photosynthesis is the single most important process for life on Earth.” Discuss this statement in some detail.
Some people say that plant cells carry out photosynthesis and animal cells carry out respiration. Do you agree or disagree with this statement? Provide a valid explanation to support your answer in five sentence .
Would you expect H2O or CO2 to be the source of the oxygen produced in photosynthesis? Give the reason for your answer.
Chapter 7 Solutions
Campbell Essential Biology with Physiology (6th Edition)
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- A growing tomato plant is sprayed with a chemical that destroys chlorophyll. Explain (using an explanation of photosynthesis) why this will kill the tomato plant.arrow_forwardAll life forms on Earth depend on plants in order to exist. Give three reasons that support this statement in terms of photosynthesis. 19arrow_forwardThe graph here shows the change in energy level for the reactants and the products of photosynthesis. Given the energy levels modeled in the graph, which statement accurately compares the energy of the products and the reactants with regards to photosynthesis? A. Water and Oxygen have the highest energy compared to glucose and and carbon dioxide B. Glucose and Oxygen gas have higher energy levels compared to water and carbon dioxide C. Glucose and water have the same energy levels compared to carbon dioxide and oxygen gas D. Glucose and oxygen have a lower energy energy level associated with them compared to carbon dioxide and waterarrow_forward
- Write a short story geared towards young adults explaining the process of photosynthesis and cellular respiration and explain the interdependence between photosynthesis and cellular respiration. Tell the story as if you were a moleculearrow_forward1. Cellular respiration and photosynthesis both involve water. 2. Cellular respiration uses sugar, and photosynthesis produces sugar. 3. Cellular respiration and photosynthesis both use light to produce energy. 4. Cellular respiration requires light energy, and photosynthesis requires chemical energy.arrow_forwardWhy do you think it is important to know about cellular respiration? Compare and contrast photosynthesis from cellular respiration.arrow_forward
- Photosynthesis is a biochemical pathway that involves three kinds of activities. Name these and explain how they are related to each other.arrow_forwardWhat two products result from photosynthesis? a. water and carbon dioxide b. water and oxygen c. glucose and oxygen d. glucose and carbon dioxidearrow_forwardWhich molecule absorbs the energy of a photon in photosynthesis? a. ATP b. glucose c. chlorophyll d. waterarrow_forward
- Which of the following is true about how oxygen is formed during photosynthesis? Select one or more: a. oxygen is formed during the production of sugars b. carbon dioxide molecules are broken down to form oxygen c. oxygen is formed during electron transport d. water molecules are broken down to form oxygenarrow_forwardThe law of conservation of matter states that no matter on earth can be created or destroyed. Using the following equation: 6H2O + 6CO2 + Sunlight—> C6H12O6 + 6O2, explain how the process of photosynthesis is an example of this.arrow_forwardDescribe what happens to an electron in a biological molecule such as chlorophyll when a photon of light energy is absorbed.arrow_forward
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