Instructions

Which of the following events takes place in the electron transport chain?

Group of answer choices

substrate-level phosphorylation

the harnessing of energy from high-energy electrons derived from glycolysis and the citric acid cycle

the breakdown of an acetyl group to carbon dioxide

the breakdown of glucose into six carbon dioxide molecules

30.

How is cheese made?

Group of answer choices

Microorganisms produce ethanol from lactose.

Microorganism breakdown sugar and produce carbon dioxide

Microorganisms produce oxygen to make ATP; the oxygen increase leads to fermentation.

Microorganisms breakdown lactose and produce lactic acid.

31.

Which of the following happens when you exercise very hard?

Group of answer choices

The byproduct of exercise is oxygen; the oxygen increase leads to lactic acid fermentation.

The byproduct of exercise is carbon dioxide, and this leads to lactic acid build-up.

Fermentation leads to lactic acid build-up in your muscles.

Aerobic respiration leads to fermentation and lactic acid build-up.

32.

Many herbicides work by targeting the photosynthesis machinery of the plant. A new herbicide is being tested and you are tasked with determining which part of the light reactions is targeted by the new herbicide. You discover that ATP is being produced, but NADPH levels are very low. Which part of the light reactions is the herbicide most likely affecting?

Group of answer choices

Photosystem II

Photosystem I

ATP Synthase

Chlorophyll molecules

33.

How did eukaryotes adapt and gain the ability to perform cellular respiration?

Group of answer choices

evolution of an endomembrane system and subsequent evolution of mitochondria from a portion of the smooth endoplasmic reticulum

endosymbiosis of a photosynthetic archaeal cell in a larger bacterial host cell to escape toxic oxygen—the anaerobic archaea evolved into chloroplasts

endosymbiosis of an oxygen-using bacterium in a larger bacterial host cell-the endosymbiont evolved into mitochondria

endosymbiosis of an oxygen-using bacterium in a larger bacterial host cell-the endosymbiont evolved into chloroplasts

35.

Which of the following is the original source of electrons for photosynthesis?

Group of answer choices

NADPH

Water

chlorophyll

Light

glucose

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