Chapter 5

In a land plant, most of the carbon dioxide used in photosynthesis comes from _______ a. glucose b. the atmosphere c. water d. soil

_________ is/are the main energy source that drives photosynthesis. a. Sunlight b. Hydrogen ions c. Oxygen d. Carbon dioxide

In the light-dependent reactions, ________. a. carbon dioxide is fixed b. ATP forms c. \(\mathrm{CO}_{2}\) accepts electrons d. sugars form

When a photosystem absorbs light, _________ a. sugar phosphates are produced b. electrons are transferred to ATP c. \(\mathrm{RuBP}\) accepts electrons d. it ejects electrons

The atoms in the oxygen molecules released during photosynthesis come from ________. a. glucose b. carbon dioxide c. water d. hydrogen ions

Is the following statement true or false? Plants make all of their ATP by photosynthesis.

After photosynthesis evolved, its by-product, ______ accumulated and changed the atmosphere.

Glycolysis starts and ends in the _________. a. nucleus b. mitochondrion c. plasma membrane d. cytoplasm

The Calvin-Benson cycle starts when _______. a. light is available b. carbon dioxide is attached to RuBP c. electrons leave a photosystem

In eukaryotes, aerobic respiration is completed in the _______. a. nucleus b. mitochondrion c. plasma membrane d. cytoplasm

In eukaryotes, fermentation is completed in the _________ a. nucleus b. mitochondrion c. plasma membrane d. cytoplasm

In the third stage of aerobic respiration, _________ is the final acceptor of electrons. a. water b. hydrogen c. oxygen d. NADH

Which of the following is not produced by an animal muscle cell operating under anaerobic conditions? a. heat b. lactate c. ATP d. \(\mathrm{NAD}^{+}\) e. pyruvate f. all are produced

Hydrogen ion flow drives ATP formation during _______ a. photosynthesis b. aerobic respiration c. fermentation d. the Calvin-Benson cycle e. both a and b f. all of the above

Your body cells can use _______ as an alternative energy source when glucose is in short supply. a. fatty acids b. glycerol c. amino acids d. all of the above

Match the term with the best description. _______ pyruvate _______ fermentation _______ mitochondrion _______ pigment _______ carbon dioxide _______ rubisco _______ chloroplast a. no oxygen required b. site of photosynthesis c. product of glycolysis d. aerobic respiration ends here e. carbon-fixing enzyme f. like an antenna g. big in the atmosphere