Chapter 5

A cat eats a bird, which ate a caterpillar that chewed on a weed. Which organisms are autotrophs? Heterotrophs?

Photosynthetic autotrophs use________ from the air as a carbon source and________ as their energy source.

Light-dependent reactions in plants occur in the ________ . a. thylakoid membrane b. plasma membrane c. stroma d. cytoplasm

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

What accumulates inside the thylakoid compartment during the light-dependent reactions? a. glucose b. RuBP c. hydrogen ions \(\mathrm{d} . \mathrm{CO}_{2}\)

Light-independent reactions proceed in the ________ . a. cytoplasm b. plasma membrane c. stroma

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

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

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 c. plasma membrane b. mitochondrion d. cytoplasm

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

Match the event with its most suitable description. ________glycolysis ________fermentation ________Krebs cycle ________electron transfer phosphorylation ________CO2 fi xation a. ATP, NADH, FADH and \(\mathrm{CO}_{2}\) form b. glucose to two pyruvates c. \(\mathrm{NAD}^{+}\) regenerated, little ATP d. \(\mathrm{H}^{+}\) flows through ATP synthases e. rubisco function