Bio chapter six homework

Which part(s) of cellular respiration require(s) oxygen gas? A. the Citric Acid cycle B. the electron transport chain C. glycolysis D. a, b, and c E. a and b, but not c

a and b, but not c

For each glucose that enters glycolysis, _____ NADH enter the electron transport chain. A. 10 B. 2 C. 0 D. 4 E. 6

10

How many NADH are produced by glycolysis? A. 2 B. 3 C.5 D. 1 E. 4

2

In glycolysis, what starts the process of glucose breakdown? A. NADPH B. ADP C. Pyruvate D. FADH2 E. ATP

ATP

Which energy-rich molecule produced by cellular respiration directly powers cell work?

ATP

Which of the following molecules is broken down in cellular respiration, providing fuel for the cell?

glucose

In what organelle would you find acetyl CoA formation, the citric acid cycle, and the electron transport chain? A. nucleus B. lysosome C. chloroplast D. Golgi apparatus E. mitochondrion

mitochondrion

In cellular respiration, most ATP molecules are produced by _____. A. photosynthesis B. photophosphorylation C. cellular respiration D. substrate-level phosphorylation E. oxidative phosphorylation

oxidative phosphorylation

The final electron acceptor of cellular respiration is _____. A.NADH B. oxygen C. water D. CO2 E. FADH2

oxygen

Cellular respiration requires fuel (glucose) and oxygen gas. The main process that produces these inputs is _____. A. photosynthesis B. glycolysis C. electron transport D. the Citric Acid cycle

photosynthesis

In glycolysis, ATP molecules are produced by _____. A. oxidative phosphorylation B. substrate-level phosphorylation C. photosynthesis D. cellular respiration E. photophosphorylation

substrate-level phosphorylation

In glycolysis there is a net gain of _____ ATP. A. 2 B. 4 C. 5 D. 3 E. 1

2

What is the correct general equation for cellular respiration? A. C6H12O6 + 6 CO2 → 6 O2 + 6 H2O + ATP energy B. C6H12O6 + 6 O2 → 6 CO2 + 6 H2O + ATP energy C. C6H12O6 + 6 H2O → 6 CO2 + 6 O2 + ATP energy D. 6 O2 + 6 H2O + ATP energy → C6H12O6 + 6 CO2 E. 6 CO2 + 6 H2O + ATP energy → C6H12O6 + 6 O2

C6H12O6 + 6 O2 → 6 CO2 + 6 H2O + ATP energy

Which of these is NOT a product of glycolysis? A. ATP B. FADH2 C. pyruvate D. water E. NADH + H+

FADH2

During electron transport, energy from _____ is used to pump hydrogen ions into the _____. A. NADH and FADH2 ... mitochondrial matrix B. NADH ... intermembrane space C. NADH ... mitochondrial matrix D. acetyl CoA ... intermembrane space E. NADH and FADH2 ... intermembrane space

NADH and FADH2 ... intermembrane space

What is the role of oxygen in cellular respiration? A. Oxygen provides high-energy electrons for transfer to glucose. B. Oxygen accepts high-energy electrons after they are stripped from glucose. C. Oxygen is required to convert ADP to ATP. D. Oxygen is involved in the initial breakdown of glucose to pyruvic acid

Oxygen accepts high-energy electrons after they are stripped from glucose.

Which statement describes the citric acid cycle? A. his process converts pyruvic acid to acetyl CoA. B. This process joins 2 pyruvic acid molecules into a molecule of glucose. C. This process produces some ATP and carbon dioxide in the mitochondrion. D. This process uses energy captured from electrons flowing to oxygen to produce most of the ATPs in cellular respiration. E. This process splits glucose in half and produces 2 ATPs for each glucose.

This process produces some ATP and carbon dioxide in the mitochondrion.

Which statement describes glycolysis? A. This process produces some ATP and carbon dioxide in the mitochondrion. B. This process converts pyruvic acid to acetyl CoA. C. This process uses energy captured from electrons flowing to oxygen to produce most of the ATPs in cellular respiration. D. This process joins 2 pyruvic acid molecules into a molecule of glucose. E. This process splits glucose in half and produces 2 ATPs for each glucose.

This process splits glucose in half and produces 2 ATPs for each glucose.

Which statement describes the electron transport chain? Hints A. This process uses energy captured from electrons flowing to oxygen to produce most of the ATPs in cellular respiration. B. This process converts pyruvic acid to acetyl CoA. C. This process produces some ATP and carbon dioxide in the mitochondrion. D. This process splits glucose in half and produces 2 ATPs for each glucose. E. This process joins 2 pyruvic acid molecules into a molecule of glucose.

This process uses energy captured from electrons flowing to oxygen to produce most of the ATPs in cellular respiration.

Glycolysis is the multi-step breakdown of _____. Several different _____ play a role in this process. A. pyruvic acid ... sugars B. glucose ... enzymes C. ATP ... complex carbohydrates D. glucose ... organelles

glucose ... enzymes

Which of the following processes takes place in the cytosol of a eukaryotic cell? A. acetyl CoA formation B. citric acid cycle C. glycolysis D. electron transport chain E. ATP production by ATP synthase

glycolysis

Which one of the following is considered the evolutionarily oldest mechanism to generate ATP? A. electron transport B. aerobic metabolism C. glycolysis D. the citric acid cycle E. photosynthesis

glycolysis

Select the correct sequence of steps as energy is extracted from glucose during cellular respiration. A. acetyl CoA → citric acid cycle → electron transport chain → glycolysis B.electron transport chain → citric acid cycle → glycolysis → acetyl CoA C. glycolysis → acetyl CoA → citric acid cycle → electron transport chain D. glycolysis → citric acid cycle → acetyl CoA → electron transport chain E. citric acid cycle → electron transport chain → glycolysis → acetyl CoA

glycolysis → acetyl CoA → citric acid cycle → electron transport chain

Unlike the Citric Acid cycle and electron transport, glycolysis occurs _____. A. in the cytoplasm B. directly on the surface of the mitochondrial membrane C. within the mitochondrial membrane D. within the cell nucleus

in the cytoplasm

The proximate (immediate) source of energy for oxidative phosphorylation is _____. A. ATP synthase B. kinetic energy that is released as hydrogen ions diffuse down their concentration gradient substrate-level phosphorylation C. NADH and FADH2 D. ATP

kinetic energy that is released as hydrogen ions diffuse down their concentration gradient

In muscle cells, fermentation produces _____. A. carbon dioxide, ethanol, NADH, and ATP B. lactate and NADH C. pyruvate D. lactate and NAD+ E. carbon dioxide, ethanol, NAD+, and ATP

lactate and NAD+

Cellular respiration accomplishes two major processes: (1) it breaks glucose down into smaller molecules, and (2) it harvests the chemical energy released and stores it in ATP molecules. By the end of _____, the breakdown of glucose is complete; most ATPmolecules are produced during _____. A. glycolysis ... the Citric Acid cycle B. the Citric Acid cycle ... glycolysis C. the Citric Acid cycle ... electron transport D. electron transport ... glycolysis

the Citric Acid cycle ... electron transport

Which part(s) of cellular respiration take(s) place in the mitochondria? A. glycolysis B. the electron transport chain C. the Citric Acid cycle D. the Citric Acid cycleand the electron transport chain E. All of the above.

the Citric Acid cycleand the electron transport chain

NADH and FADH 2 are important in cellular respiration because they deliver high-energy electrons to the electron transport system. Electron transport produces _____ ATP molecule(s) per NADH molecule and _____ ATP molecules(s) perFADH 2 molecule. A. three ... two B. two ... three C. one ... one D. zero ... zero

three ... two

In electron transport, high-energy electrons "fall" to oxygen through a series of reactions. The energy released is used to _____. A. synthesize ATP directly. B. transport protons into the intermembrane space of the mitochondria, where they become concentrated. They then flow back out into the the inner compartment (matrix) of the mitochodria. On the way back, protons turn ATP synthase turbines and produce ATP. C. transport electrons out of the mitochondria, resulting in ATP production. D. move phosphate groups into the mitochondria. When they reach a high enough concentration, they spontaneously join with ADP to form ATP.

transport protons into the intermembrane space of the mitochondria, where they become concentrated. They then flow back out into the the inner compartment (matrix) of the mitochodria. On the way back, protons turn ATP synthase turbines and produce ATP.

What is/are the most important output(s) of glycolysis? A. two net ATP molecules B. four net ATP molecules C. two pyruvic acid and two NADH molecules D. carbon dioxide E. one glucose molecule

two pyruvic acid and two NADH molecules