BSC1010 CHAPTER 7: RESPIRATION (HOW CELLS
HARVEST ENERGY) EXAM QUESTIONS AND ANSWERS
WITH COMPLETE SOLUTIONS VERIFIED.
The two reactions involved in a redox reaction are ________ and _______.
oxidation and reduction
True or false: Both autotrophs and heterotrophs extract energy from organic compounds.
True
The process by which energy is harvested is called:
cellular respiration
The oxidation of organic compounds to extract energy from chemical bonds.
cellular respiration
The goal of cellular respiration is:
(1) the complete oxidation of glucose
(2) the oxidation of organic compounds to extract energy
Put the events of the oxidation of glucose during glycolysis and the Krebs cycle in the correct order,
beginning with the earliest event at the top.
,1: Pyruvate is produced during glycolysis
2: Pyruvate is oxidized and a CO2 is cleaved off
3: an acetyl group is attached to coenzyme A.
4: Acetyl-CoA is fed into the Krebs cycle
Match each cell type with the location of pyruvate oxidation:
Eukaryotes --> mitochondria
Prokaryotes --> cytoplasm
The process of cellular respiration is how living cells obtain ____ from organic molecules.
energy
Energy is extracted from food molecules using enzyme-catalyzed ____ reactions that convert the
energy to ATP.
redox
Select the products yielded by the passage of glucose through glycolysis and the Krebs cycle:
CO2
ATP
NADH
The metabolic pathway, in which glucose is converted into 2 pyruvate molecules to yield two ATP
molecules is called:
Glycolysis
Glycolysis occurs in the:
cytoplasm
, What molecule is considered to be the energy currency of the cell and is used to do work?
ATP
Select the groups of organisms that are autotrophs:
Algae; plants and SOME bacteria (some bacteria are heterotrophs)
The process by which eukaryotic cells harvest energy from organic compounds is termed:
cellular respiration
Put the steps of glycolysis in the order that they occur, beginning with the first step at the top:
1: Glucose is converted to a 6-carbon disphosphate sugar, requiring 2 ATP molecules
2: A 6-carbon sugar is split to yield 2 molecules of G3P
3: G3P is oxidized and phosphorylated, forming NADH and BPG
4: Phosphates are transferred from BPG to ATP, and pyruvates are produced.
True or False: The net gain of ATP from glycolysis is 4.
False. The net gain is 2 ATP molecules.
Order the complexes in the electron transport chain from first (electrons enter) to last (electrons exit).
Start at the top.
NADH dehydrogenase
The bc1 complex
The cytochrome oxidase complex
HARVEST ENERGY) EXAM QUESTIONS AND ANSWERS
WITH COMPLETE SOLUTIONS VERIFIED.
The two reactions involved in a redox reaction are ________ and _______.
oxidation and reduction
True or false: Both autotrophs and heterotrophs extract energy from organic compounds.
True
The process by which energy is harvested is called:
cellular respiration
The oxidation of organic compounds to extract energy from chemical bonds.
cellular respiration
The goal of cellular respiration is:
(1) the complete oxidation of glucose
(2) the oxidation of organic compounds to extract energy
Put the events of the oxidation of glucose during glycolysis and the Krebs cycle in the correct order,
beginning with the earliest event at the top.
,1: Pyruvate is produced during glycolysis
2: Pyruvate is oxidized and a CO2 is cleaved off
3: an acetyl group is attached to coenzyme A.
4: Acetyl-CoA is fed into the Krebs cycle
Match each cell type with the location of pyruvate oxidation:
Eukaryotes --> mitochondria
Prokaryotes --> cytoplasm
The process of cellular respiration is how living cells obtain ____ from organic molecules.
energy
Energy is extracted from food molecules using enzyme-catalyzed ____ reactions that convert the
energy to ATP.
redox
Select the products yielded by the passage of glucose through glycolysis and the Krebs cycle:
CO2
ATP
NADH
The metabolic pathway, in which glucose is converted into 2 pyruvate molecules to yield two ATP
molecules is called:
Glycolysis
Glycolysis occurs in the:
cytoplasm
, What molecule is considered to be the energy currency of the cell and is used to do work?
ATP
Select the groups of organisms that are autotrophs:
Algae; plants and SOME bacteria (some bacteria are heterotrophs)
The process by which eukaryotic cells harvest energy from organic compounds is termed:
cellular respiration
Put the steps of glycolysis in the order that they occur, beginning with the first step at the top:
1: Glucose is converted to a 6-carbon disphosphate sugar, requiring 2 ATP molecules
2: A 6-carbon sugar is split to yield 2 molecules of G3P
3: G3P is oxidized and phosphorylated, forming NADH and BPG
4: Phosphates are transferred from BPG to ATP, and pyruvates are produced.
True or False: The net gain of ATP from glycolysis is 4.
False. The net gain is 2 ATP molecules.
Order the complexes in the electron transport chain from first (electrons enter) to last (electrons exit).
Start at the top.
NADH dehydrogenase
The bc1 complex
The cytochrome oxidase complex
