Biology Chapter 8 Review
Be able to label pictures of the chloroplasts.
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What is the correct formulas correctly summarizing the process of photosynthesis?
6CO2+6H2O yields C6H12O6+6O2 Carbon dioxide + water yields glucose + oxygen
What four products are produced during the light-dependent reaction of photosynthesis?
ATP, NADPH, Oxygen, hydrogen ions.
The leaves of a plant appear green because chlorophyll:
Absorbs most colours in light except green; reflects green light.
The first step in photosynthesis is the:
Absorption of light energy.
What are the three parts of the ATP molecules?
Adenine, 3rd phosphate group, ribose.
Which is formed during the light-independent phase of photosynthesis?
Anaerobic processes that restore NAD plus supply.
Organisms, such as plants, that make their own food are called:
Autotrophs.
Why are electron carriers needed for transporting electrons from one part of the chloroplast to another?
Because high energy electrons are highly reactant.
The light-independent reactions of photosynthesis are also known as the:
Calvin cycle.
Why have CAM and C4 plants developed a way to temporarily store the energy from:
During daylight so they close not allowing carbon dioxide to pass through.
Photosynthesis is the process by which plants and some other organisms use energy from the sun to produce food. What type of energy transformation occurs during this process?
Electromagnetic energy to chemical energy.
What is formed during the light-dependent phase of photosynthesis:
Glucose.
Know the basic heterotrophs:
Heterotrophs and anything it eats.
Photosynthesis uses sunlight to convert water and carbon dioxide into:
High energy sugars and oxygen.
ATP synthase in the chloroplast membrane makes ATP, utilizing the energy of highly concentrated:
Hydrogen ions.
Where in the chloroplast is chlorophyll found?
In the thylakoid membrane.
What is the role of NADP+ in photosynthesis?
It's the electron carrier.
The amount of energy stored in a molecule of ATP compared to the amount stored in a molecule of glucose is:
Less; A single molecule of glucose stores more than the energy stored by ATP.
Photosynthesis is to chloroplast as cellular respiration is to:
Mitochondria.
Which substance from the light-dependent reactions of photosynthesis is a source of energy for the Calvin cycle?
NADPH and ATP.
What substance from the light-dependent reaction of photosynthesis is a source of energy for the Calvin cycle?
NADPH.
Plants have more than one type of pigment to:
Optimize the wavelengths.
Which organisms perform photosynthesis to produce what?
Organism: Autotrophs. Product: Carbohydrates.
Because of photosynthesis the atmosphere:
Oxygen gas.
In the overall equation for photosynthesis, six molecules of carbon dioxide and six molecules of water results in a molecule of sugar and six molecules of:
Oxygen.
Which photosystem occurs first during photosynthesis?
Photosystem II.
What are the steps in the light-dependent reactions?
Pigments in photosystem to absorb light. High energy electrons move through the electrons transport chain. ATP synthase allows hydrogen ions to pass through the thylakoid membrane.
Light-absorbing molecules, such as chlorophyll, are called:
Pigments.
An example of CAM plants is a:
Pineapple.
What is the biological importance of the molecule of adenosine triphosphate?
Provides chemical energy for reactions.
Which molecule results from the final step of the Calvin cycle?
RuBP.
The Calvin cycle takes place in the:
Stroma.
List three factors that affect the rate of photosynthesis:
Temperature, light intensity, availability of water, and amount of CO2.
How do most primary producers make their own food?
They use light energy to make carbohydrates.
Where are photosystems I and II found?
Thylakoid membrane.
The stroma is in the region outside the:
Thylakoids.
Which molecules are taken up by plants during photosynthesis?
Water and carbon dioxide.
Water is a critical reactant in photosynthesis. In what way does photosynthesis depend upon the presence of water?
Water splits into hydrogen and oxygen which helps in pouring the making of substances needed for the light-independent reacts.
Energy is released from ATP when:
When the chemical bond between the second and third phosphate groups is broken.
Where do light-dependent reactions take place:
Within the thylakoid membrane.