Basic Info On Photosynthesis

Every oxidation reaction, must be accompanied by a _________________ reaction.

The electron transport chain lies between two large green clusters of ____________ molecules.

Carbon atoms from carbon dioxide in the air are used to make __________________, that are used to store chemical energy.

Energy transfer from link to link of the food chain is less than 100% efficient.  Some of the energy is lost as _______ energy during respiration.

What are light-absorbing substances called?

Where are the pigments involved in photosynthesis located?

• The nucleus of leaf cells

• The chloroplasts of leaf cells

• The mitochondria of leaf cells

What is this equation for?

• Krebs cycle

• Photosynthesis

• Cellular respiration

• Calvin cycle

Excited electrons combine with hydrogen ions as well as an electron acceptor called NADP+ which makes NADpH.

• True

• False

What is the function of photosynthesis?

• To make galactose using sunlight

• To make enzymes using sunlight

• To make sucrose using sunlight

• To make glucose using sunlight

What is the primary pigment in photosynthesis?

• Chloroplasts

• Mitochondria

• Chlorophyll

Where does photosynthesis occur?

• Mitochondria

• Chlorophyll

• Chloroplast

• Nucleus

Light is a form of radiation

• True

• False

What is the only kind of radiation that humans can see?

• Visible light

• Heat radiation

• Radiation from space

• Radiation from microwaves

Check off the different types of chlorophyll in a plant

• Chlorophyll A

• Chlorophyll B

• Chlorophyll C

Which depicts an open stomata?

• The picture on the left

• The picture on the right

• Neither picture

Excited electrons loose some of their energy as they each pass through proteins.

• True

• False

How are some hydrogen ions made in the thylakoid?

• The light from the sun creates them

• By splitting hydrogen ions

• By splitting water molecules

• By building pigments

The reactions that fix carbon dioxide are sometimes called dark reactions because they are light independent

• True

• False

Clusters of pigments are in the membranes of disk-shaped structures called thylakoids

• True

• False

What is the enzyme that during step 1 of the Calvin Cycle combines a molecule of carbon dioxide with a 5-carbon molecule, Ribulose?

• Protease

• Ribosomes

• RuBisCO

• Bromelain

What are the tiny holes, or pores, on the surface of a leaf called?

• Stomara

• Stomata

• Chloroplasts

• Vesicles

What is the Calvin Cycle named for?

• An American biochemist whoes name was Melvin Calvin

• An American biochemist whoes name was Alvin Calvin

• An American biochemist whoes name was Albert Einstein

Where is the primary electron acceptor located?

• Mitochondria

• Outer membrane

• Thylakoid membrane

• Carbohydrates

When excited electrons leave a chlorophyll molecule, it doesnt have to be replaced by another electron.

• True

• False

Stages 1 and 2 of photosynthesis are known as what?

• The Dark Reactions

• The Light Reactions

• The coefficient Reactions

What is light energy used for?

• To make energy storing compounds

• For fun

• To convert sugars to sunlight

• To consume food

What is the Calvin cycle?

• A series of enzyme-assisted chemical reactions that make a 2-carbon sugar

• A series of enzyme-assisted chemical reactions that make a phosphate group

• A series of enzyme-assisted chemical reactions that make a 3-carbon sugar

When a substance looses electrons, what kind of reaction does it undergo?

• Photosynthesis

• Oxidation reaction

• Cellular respiration

• Reoxidation reaction

As time goes on, there are more hydrogen ions inside the thylakoid than outside, creating a concentration gradient across the thylakoid membrane.

• True

• False

What is the protein involved in the diffusion of hydrogen ions called?

• ADP

• ADP synthase

• ATP

• ATP synthase

The transfer of carbon dioxide to organic compounds is called?

• Carbon dioxide fixation

• Oxidation

• Redox reaction

• Carbondioxideosis

What molecules control the reaction rate of photosynthesis?

• Sugars

• Enzymes

• Fatty acids

• Nucleic acids

What is a carotenoid?

• A pigment similar to chlorophyll A in almost every way

• A pigment that absorbs the same wavelengths that chlorophyll does, just does different things with the light

• An accessory pigment that absorbs different wavelengths of light than chlorophyll

What controls the opening and controlling of the stomata?

• The leaves of the plant

• The stem of the plant

• Gaurd cells

• There is no control

The Calvin cycle is the least common method of carbon dioxide fixation and it takes place in the stroma of the chloroplast

• True

• False

What is the first stage of photosynthesis?

• Light energy is converted to chemical energy. This chemical energy is temporarily stored in ATP and the energy carrier molecule NADPH.

• The chemical energy (stored in ATP and NADPH) powers the formationof otganiccomounds , using carbon dioxide

• Energy is captured from sunlight

• The flower dances around to capture sunlight

In the second step of the second step, when PGA is converted into PGAL,  1,3-BPGA recieves a protion from where?

• NAD

• NADPH

• Hydrogen ions

Chlorophyll B is known as an...

• Excess pigment

• Necessary pigment

• Accesory pigment

• Helping pigment

What powers stage three of photosynthesis?

• ADP

• ADP synthase

• ATP

• ATP synthase

What substance accepts the electrons from the oxidation and reduction reaction?

• The secondary electron acceptor

• Chloropyll

• The photosystem

• The primary electron acceptor

What is the energy lost by the electrons used to do?

• Pump hydrogen ions into the thylakoid

• Pump hydroxide ions into the thylakoid

• Pump hydrogen ions out of the cell

• Pump hydroxide ions out of the cell

What is photosynthesis?

• The process where energy is converted into ATP

• The process where light undergoes a series of changes

• The process that provides energy for almost all life

• The process that provides light

How can electrons move from chlorophyll molecules to other nearby molecules?

• They use vesicles to move

• They float through liquid

• When the electrons are excited, they are unstable and they jump

• Electrons are unable to move

What is the process of chemiosmosis?

• As hydrogen ions pass through the channel of the protein, the protein catalyzes a reaction in which a phosphate group is added to ADP to create ATP

• As hydrogen ions pass through the side of the protein, the protein catalyzes a reaction in which a phosphate group is added to ADP to create ATP

• As hydrogen ions pass through the channel of the protein, the protein catalyzes a reaction in which a phosphate group is added to ATP to create ADP

At the same time light is absorbed by PSII, light is also absorbed by PSI.

• True

• False

Where do electrons move from a chlorophyll a molecule in PSI?

• Out of the plant

• Stay where they are

• The PSII

• To another primary electron acceptor

If the stomata are closed, what happens?

• Oxygen builds up inside the plant and the CO2 concentration is low

• CO2 builds up inside the plant and the CO2 concentration is low

• Oxygen builds up inside the plant and the CO2 concentration is high

• Oxygen builds up outside the plant and the CO2 concentration is low

Plants close their stomata part way during the coldest part of the day, to minimize water loss.

• True

• False