Photosynthesis and Calvin Cycle Essay

Submitted By xxbrittanyelyse
Words: 512
Pages: 3
Open Document
Photosynthesis Worksheet

1. What is the overall reaction for photosynthesis?

6 CO2 + 6 H2O ( glucose (C6H12O6) + 6 O2

2. How does this compare to the overall reaction for cellular respiration? It is the reverse of the overall reaction for cellular respiration.

3. Where does the energy for photosynthesis come from? from sunlight

4. What plant pigments are involved in photosynthesis? chlorophyll a, chlorophyll b, and carotenoids

5. Explain why chlorophyll appears green to us in terms of what happens to different wavelengths of light that strike a chlorophyll molecule. We see light that bounces off of objects (reflected light). Chlorophyll is best at trapping and absorbing the red – orange wavelengths of light and the blue, indigo, and violet wavelengths of light. It is not good at absorbing the green wavelengths. The green light is reflected, so it is the part we see. Therefore, chlorophyll looks green to us.

6. How does the amount of energy in light change as the wavelength increases? As wavelength increases, amount of energy decreases. Thus, violet light (which has a shorter wavelength) has more energy that red light (which has a longer wavelenth).

7. Which colors of light are most effective for photosynthesis? Explain why. Chlorophyll looks green to us because most of the green wavelengths are reflected rather than being absorbed. For this reason, green light is not an effective color of light to power photosynthesis. Chlorophyll a and b together absorb light most effectively in the blue to violet range and the orange to red range. Since violet wavelengths have the most energy in the visible light range (due to their shorter wavelengths) they can provide the maximum energy for photosynthesis.

8. In what organelle of a plant cell does photosynthesis take place? in the chloroplasts

9. What are the two stages of photosynthesis? light reactions and Calvin cycle

10. In which part of the chloroplast does each stage occur? The light reactions take place in the thylakoids. The Calvin cycle takes place in the stroma.

11. What happens to water molecules in the light reactions? Water molecules
Show More

Related Documents: Photosynthesis and Calvin Cycle Essay

The Difference between Chemosynthesis and Photosynthesis Essay

What type of organisms carry out photosynthesis? Autotrophs such as plants and some protists carry out photosynthesis. 3. What is photosynthesis? Photosynthesis is the cellular process in which autotrophs capture light energy and convert it to chemical energy (glucose) using carbon dioxide and water. 4. What is the chemical equation for photosynthesis? (Write in chemical equation and word form.) 6CO2 + 6H2O + light energy C6H12O6 + 6O2 5. What are the reactants in photosynthesis? The reactants in photosynthesis are carbon dioxide…

Words 350 - Pages 2

Exam 3 Study Guide Essay

Biology Study Guide for Exam 3 1. Compare autotrophs vs heterotrophs Autotrophs are organisms that can produce their own food from the substances available in their surroundings using light (photosynthesis) or chemical energy (chemosynthesis). Heterotrophs cannot synthesize their own food and rely on other organisms -- both plants and animals -- for nutrition. 2. Define the terms cellular respirations, dehydrogenations, oxidations and reductions Cellular Respiration: Cellular respiration is the…

Words 2226 - Pages 9

The Plants Need Ip As Energy To Realize The Photosynthesis

Bio 101 Homework Chapter 5 Multiple Choice 1. The plants need ATP as energy to realize the photosynthesis. 2. Photosynthesis is an example of an exergonic; light energy is captured by pigment molecule chemical reaction because endergonic; the reactions occur inside a cell. 3. The evolution of photosynthesis resulted in an increase in the amount of O2 in the atmosphere. 4. A plan appears green because it contains chloroplasts and the chlorophyll a absorbs ultraviolet light. 5…

Words 841 - Pages 4

Photosynthesis Notes Essay

in cells -Glucose: simple sugar made by plants in Calvin cycle (C6H12O6) Stages of Photosynthesis 1: Pigments capture energy from sun 2: Light energy is converted to chemical energy (ATP and NADPH) -Energy stored in chemical bonds 3: ATP, NADPH and CO2 used to make glucose Stage 1: Photosystem 2 Thylakoid absorbs light Light energy transferred to chlorophyll H2O is split by an enzyme to make H+ and O2 H+ goes to the Calvin cycle, O2 is released (as the air we breathe) Stage 2:…

Words 531 - Pages 3

Photosynthesis and Carbon Dioxide Essay

Lecture 6.8: Photosynthesis, Respiration, and Photorespiration Respiration The controlled breakdown of sugar to release energy (ATP and NADPH) stored as sugar. (Requires sugar and oxygen; happens in every cell of the plant) High activity of respiration in sinks. C6H12O6 [sugar] +O2=CO2 [byproduct] +H2O [byproduct] +Energy Occurs in the mitochondria of the cell (an organelle in the cell) Photorespiration Rubisco (the enzyme used in the Calvin Cycle to attach the carbon in CO2 to a 5C [carboxylase]…

Words 1013 - Pages 5

Essay on Photosynthesis: Photosynthesis and Photosynthesis Overview- Photosynthesis

Photosynthesis Overview- Photosynthesis is the process by which organisms use solar energy to make sugar and oxygen (nutrient molecules) from carbon dioxide and water (PimaCommunityCollege). The chemical equation of this process is: carbon dioxide + water =light energy=> glucose + oxygen 6CO2 + 6H2O =light energy=> C6H12O6 + 6O2, or Six molecules of carbon dioxide plus six molecules of water produce one molecule of sugar plus six molecules of oxygen. The two stages of photosynthesis: The…

Words 1291 - Pages 6

Science 230 Essay

are glycolysis, citric acid cycle, and electron transport. Refer to p. 96 of the text. What is the role of glycolysis? Include the reactants and the products. Where does it occur? The role of glycolysis is to split a glucose molecule into two pyruvic acid molecules with a net gain of two ATP. Glucose is a reactant and pyruvic acid and ATP are the products. It occurs in the cytoplasm of cells. Refer to pp. 96 & 97 of the text. What is the role of citric acid cycle? Include the reactants and…

Words 599 - Pages 3

Essay about Photosynthesis and Chemical Energy

Section 1 - Directly or indirectly, all of the energy in living systems needed for metabolism comes from the sun. - Photosynthesis is the process by which light energy is converted to chemical energy. - Autotrophs are organisms that use energy from sunlight or from chemical bonds in inorganic substances to make organic compounds. - Most Autotrophs, including plants, are photosynthetic…

Words 590 - Pages 3

Photosynthesis and Atp Essay

Photosynthesis and Cellular Respiration Review and Jeopardy Photosynthesis: Light Dependent Reactions (Stage 1) PS II (wavelength p680) -Photons strike the chlorophyll in Photosystem 2 (PS II) and an electron absorbs the energy and becomes excited (photoexcitation), but has nothing to do with this energy. -The electron travels from PS II (1st protein complex of 4) along the Electron Transport Chain (via mobile electron carriers) to harness the energy; across a series of reactions the electrons lose…

Words 1005 - Pages 5

Cellular Energy Lab Report

can directly use the energy of sunlight. Autotrophs (producers) make their own food by obtaining energy from sunlight (or inorganic compounds). Heterotrophs (consumers) cannot make their own food, and must get their energy from food sources. Photosynthesis- carried out in the chloroplasts of plants; uses carbon dioxide to store energy in the form of glucose (organic molecules); produces oxygen 6CO2 + 6 H2O C6H12O6 + 6O2 Chloroplasts- found in the cells of green plants- convert light energy…

Words 811 - Pages 4