Chapter 10 practice questions (Jake)

______ and ______ are the products of the light-dependent stage of photosynthesis that are used in the light-independent stage of photosynthesis. A. NADPH, Oxygen B. Oxygen, ATP C. ATP, NADPH D. ATP, Water

ATP, NADPH

What do pigments do? A. Absorb Light B. Reflect Light C. Transmit Light C. All of the above

All of the above

What happens when a chlorophyll or other pigment molecule absorbs light energy? A. Electrons are stripped from NADPH B. An electron is excited C. ATP is synthesize from the energy absorbed D. Carboxylation reaction of the Calvin cycle occurs

An electron is excited

_____ light raises electrons to a higher energy state than _____ light. A. Red, Blue B. Green, Violet C. Blue, Red D. Orange, Blue

Blue, Red

These plants separate carbon fixation in space (mesophyll cells and bundle sheath cells)? A. C3 B. CAM C. C4 D. Two of the above

C4

In ______, carbon dioxide is fixed in ______ to form 4-carbon organic acids. A. CAM Photosynthesis, Mesophyll cells B. C4 Photosynthesis, Bundle-sheath cells C. C4 Photosynthesis, Mesophyll cells D. CAM Photosynthesis, Bundle-sheath cells

C4 Photosynthesis, Mesophyll cells

These plants separate carbon fixation in time (night and day)? A. CAM B. C4 C. C3 D. All of the above

CAM

______ is "fixed" by the enzyme ____ during the Calvin Cycle using the energy and electrons from the products of the light-dependent reactions. A. Water, deoxygenase B. Glucose, rubisco C. Carbon Dioxide, rubisco D. ATP, ATPase

Carbon Dioxide, rubisco

Which of the following is a difference between chlorophyll a and chlorophyll b? A. Chlorophyll a absorbs yellow light, and chlorophyll b absorbs green B. Chlorophyll a contains a Mg atom in its head region, whereas chlorophyll b contains iron C. Chlorophyll a and b absorb light energy at slightly different wavelengths D. Chlorophyll a is a pigment and chlorophyll b is the enzyme that transfers excited electrons from chlorophyll a to electron carriers of the thylakoid membrane

Chlorophyll a and b absorb light energy at slightly different wavelengths

These pigments absorb in the red and blue regions of the electromagnetic spectrum and transmit green light? A. Carotenoids B. Phycobillins C. Chlorophylls D. Xanthophylls

Chlorophylls

Of the three fates of excited electrons in photosynthesis, which is the least favorable? A. Resonance B. Redox C. Fluorescence D. None of the above

Fluorescence

These are the "stacks" found inside the chloroplast? A. Thylakoids B. Stroma C. Stomata D. Grana

Grana

These reactions produce O2 from H2O using energy from the sun? A. Light-dependent reactions B. Light-independent reactions C. Calvin Cycle D. Photophosphorylation

Light-dependent reactions

Which of the following are products in the process of Photosynthesis? A. CO2 B. H2O C. O2 D. All of the above

O2

_____ transfers electrons from the photosystems to an ETC in the thylakoid membrane. A. Plastocyanin B. Pheophytin B. Quinone D. PQ (plastoquinone)

Pheophytin

These are the discreet packets that light travel in? A. Photons B. Wavelengths C. Ions D. Crests

Photons

_____ is the capture of light energy by photosystem II to produce ATP A. Photophosphorylation B. Chemiosmosis C. Hydrolysis D. Resonance

Photophosphorylation

The enzyme rubisco catalyzes the addition of oxygen, as well as carbon dioxide, to RuBP; the reaction with oxygen leads to a loss of fixed carbon dioxide and ATP and is called? A. Aerobic respiration B. Photorespiration C. Hydrolysis D. Fermentation

Photorespiration

The electrons from _____ are used to reduce _____? A. Photosystem I, NADPH B. Photosystem I, ATP C. Photosystem II, ATP D. Photosystem II, NADPH

Photosystem I, NADPH

What is the only known biological compound that is known to split water? A. Photosystem II B. Photosystem I C. Pheophytin D. Plastoquinone

Photosystem II

Electrons from _____ replace the electrons lost by Photosystem I to the ETC? A. Water B. Photosystem II's ETC C. Glucose D. It doesn't lose electrons

Photosystem II's ETC

The electrons from ______ are used to pump H ions across the thylakoid membrane to produce ______? A. Photosystem I, NADPH B. Photosystem I, ATP C. Photosystem II, ATP D. Photosystem II, NADPH

Photosystem II, ATP

Based on what you know about the structure and function of the antenna complex, irradiating a leaf with which of the following light types would result in the release of the greatest quantities of oxygen? A. green and blue B. red and orange C. red and blue D. violet and red

Red and blue

Through what does the plant release oxygen and water vapor to the atmosphere and absorb carbon dioxide? A. Chloroplasts B. Stomata C. Oxyblasts D. Two of the above

Stomata

How are the light-dependent and light-independent reactions of photosynthesis related? A. The products of light-dependent reactions are used in light-independent reactions B. They aren't related C. The products of light-independent reactions must be present for light-dependent reactions to take place D. The products of the light-independent reactions are used in the light-dependent reactions

The products of light-dependent reactions are used in light-independent reactions

The electrons of photosystem II are excited and transferred to electron carriers. From which molecule or structure do the photosystem II replacement electrons come? A. Photosystem I B. Water C. Oxygen D. Plastocyanin (electron carrier)

Water

In addition to proteins, thylakoid membranes must contain a large number of ____ molecules in the reaction centers in order to harvest light energy? A. water B. phospholipid C. electron carrier D. pigment

pigment

What is the main purpos of the light-dependent reactions of photosynthesis? A. to make glucose B. to fix atmospheric CO2 C. to produce NADPH and ATP D. to generate O2

to produce NADPH and ATP