Photosynthesis

NADP +

A carrier molecule that can accept and hold two electrons along with a hydrogen ion

The energy carriers ______ and ______ are produced during the light-dependent reactions.

ATP and NADPH

Which of the following are produced by reactions that take place in the Michael Lloyd and consume by reactions in the stroma?

ATP and NADPH

ATP

Adnosine Triphosphate is one of the principal chemical compounds that living things use to store energy

What is the difference between an autotroph and heterotroph?

Autotroph make their own food (producers), heterotrophs do not.

If you place a plant in a clear, sealed box, how could you use a measurement of the gases in the box air to measure the rate of photosynthesis? What gas would you measure?

By placing it inside of a container with a test to both filled with water and o2 would be the gas being measured.

The light-independent reactions are also known as the ________.

Calvin cycle

What is the overall equation for photosynthesis?

Carbon dioxide + Water --> Glucose + Oxygen

Explain how light energy affects of chlorophyll molecule.

Chlorophyll - green pigment that absorbs light energy and is located in chloroplast. Chloroplasts' mebranes are where photosynthesis occurs.

In which part of photosynthesis is oxygen produced?

During the light-dependent reactions

The process of photosynthesis consumes ______ and produces ______.

H2O; O2

If there is no light coming into the chloroplast, how will this affect the Calvin cycle?

If there is no light going to the chloroplast no ATP or NADPH would be made to the Calvin cycle would not occur.

What is the role of NADP+ in photosynthesis?

It carries electrons to the Calvin cycle

If a plant is kept under green color light for an extended period of time, what will happen to the plants food production?

It would stop because all of the green light would be reflected off, not allowing photosynthesis to occur.

High-energy sugars are produced during the ______ reactions.

Light independent

Thylakoid

Membrane found in chloroplast that contains cluster of chlorophyll

In light dependent reactions the gas _____ is produced.

O2

A plant that has a high amount of the orange pigment carotene would have leaves of what color? Explain.

Orange because leave appear to be the color of whatever pigment they contain the most of.

What effect does weather have on the process of photosynthesis?

Photosynthesis can only occur when there is an adequate amount of sunlight present.

What is the relationship between pigments and chlorophyll?

Pigments are light absorbing molecules. Chlorophyll is a pigment.

Chlorophyll

Principal pigment found in plants

Photosynthesis

Process by which autotrophs use sunlight to make high-energy sugars

Light dependent reactions

Produce oxygen and convert ADP to ATP

When light strikes chlorophyll molecules, they lose electrons, which are ultimately replaced by?

Splitting water

The light independent reactions take place in the ______.

Stroma

What compounds are formed from carbon dioxide in the Calvin cycle?

Sugars

The reactions of the Calvin cycle orange directly and dependent on light, but they usually do not occur at night. Why?

The Calvin cycle depends on product of the light reactions. (NADP and ATP from light reactions are used by the Calvin cylce)

Why is it difficult for most plants to carry out photosynthesis in very hot, dry environments such as deserts?

The closing of stroma much keeps carbon dioxide I'm entering in oxygen from leaving the plant

ATP synthase

The enzyme that builds ATP

Stroma

The region outside the thylakoid membrane

The light dependent reactions take place within the ________ membranes.

Thylakoid

In photosynthesis, ______ is oxidized and ______ is reduced.

Water; carbon dioxide

Pigments

molecule that absorbs certain wavelengths of light

How do the light dependent reactions differ from the Calvin cycle?

•Light - uses energy from the Sun , produces ATP, NADPH, and oxygen •Calvin cycle - no light, uses ATP and NADPH to produce high-energy sugars

How are photosystem I and photosystem II similar? How are they different?

•They are both light dependent, use light energy to energize electrons. •There is no oxygen produced in photosystem I. •Water molecules are split and ATP becomes ATP in photosystem II.

Calvin cycle

•Uses ATP and NADPH hi energy sugars •takes place in the stroma •doesn't require light