Question 1

Glucose transport takes place by:

Accepted Answer

A)  active transport using the sodium gradient. 
B)  active transport using ATP as the energy source. 
C)  passive transport using the glucose gradient. 
D)  secondary active transport using the potassium gradient. 
E)  secondary active transport using the sodium glucose cotransporter. 
A)  active transport using the sodium gradient. 
B)  active transport using ATP as the energy source. 
C)  passive transport using the glucose gradient. 
D)  secondary active transport using the potassium gradient. 
E)  secondary active transport using the sodium glucose cotransporter. E

Question 2

The ______________ molecule brings breakdown products of proteins, sugars, and fats to the citric acid cycle in the third state of catabolism.

Accepted Answer

acetyl CoA

Question 3

Why is the acidification of the stomach juices important for the digestion of proteins?

Accepted Answer

The proteases involved in the initial digestion of proteins into oligopeptides are most active at low pHs. For the proteases to bind to their substrate, the digested protein must be partially denatured by the acidic condition of the stomach.

Question 4

Snake venom's poison is actually:

Accepted Answer

A)  a collection of digestive enzymes. 
B)  respiratory toxins. 
C)  paralysis toxins and red-blood-cell poisons. 
D)  All of the above. 
E)  None of the above. 
A)  a collection of digestive enzymes. 
B)  respiratory toxins. 
C)  paralysis toxins and red-blood-cell poisons. 
D)  All of the above. 
E)  None of the above.

Question 5

Choose the correct answer from the list below. Not all of the answers will be used.
-ɑ amylase begins the digestion of ____________ in the gut.

Accepted Answer

A) ATP-dependent proton pump 
B) G-protein 
C) hydrolyzed 
D) pepsin 
E) digestion
F)zymogen
G)lipases
H)hydrolysates
I)carbohydrates
J)lipids
K)micelle
L)ERK pathway 
A) ATP-dependent proton pump 
B) G-protein 
C) hydrolyzed 
D) pepsin 
E) digestion
F)zymogen
G)lipases
H)hydrolysates
I)carbohydrates
J)lipids
K)micelle
L)ERK pathway

Question 6

Snake venom has a high concentration of ______________ that digest(s) the cell membrane.

Accepted Answer

The answer of Snake venom has a high concentration of...

Question 7

How are dietary proteins, carbohydrates, and lipids digested?

Accepted Answer

In three phases: The foods are

Question 8

The ______________ pH of the stomach is important for the denaturation of proteins.

Accepted Answer

The answer of The ______________ pH of the stomach is...

Question 9

Complex carbohydrates are absorbed:

Accepted Answer

A)  as acetyl CoA. 
B)  as starch or glycogen. 
C)  as they are converted to glucose and simple sugars. 
D)  as short four glucose residue s. 
E)  after the digestion of ɑ 1,6 bonds by ɑ amylase. 
A)  as acetyl CoA. 
B)  as starch or glycogen. 
C)  as they are converted to glucose and simple sugars. 
D)  as short four glucose residue s. 
E)  after the digestion of ɑ 1,6 bonds by ɑ amylase.

Question 10

What is the role of cholesterol in digestion?

Accepted Answer

The emulsification of lipids i

Question 11

The pancreas releases ___________ to buffer the pH of the stomach juices.

Accepted Answer

A)  a strong base to counter the strong acid 
B)  HCl 
C)  NaHCO3 
D)  pepsin 
E)  ATPase-activating protein 
A)  a strong base to counter the strong acid 
B)  HCl 
C)  NaHCO3 
D)  pepsin 
E)  ATPase-activating protein

Question 12

The emulsification of lipids requires that the ______________ amphipathic molecule be released from the gall bladder.

Accepted Answer

The answer of The emulsification of lipids requires that the...

Question 13

The limit dextrin is material not digested by amylase due to the ______________.

Accepted Answer

ɑ-1,6 glyc

Question 14

______________ is an inactive enzyme that must be partially digested to attain full enzymatic activity.

Accepted Answer

The answer of ______________ is an inactive enzyme that must...

Question 15

Which of the following enzymes activates trypsin?

Accepted Answer

A)  zymogenase 
B)  pepsin 
C)  trypsinase 
D)  enteropeptidase 
E)  carboxypeptidase 
A)  zymogenase 
B)  pepsin 
C)  trypsinase 
D)  enteropeptidase 
E)  carboxypeptidase

Question 16

The pancreas releases ______________ to neutralize the acid produced in the stomach.

Accepted Answer

The answer of The pancreas releases ______________ to neutralize the...

Question 17

The result of lipase activity in digestion is:

Accepted Answer

A)  phospholipid head group hydrolysis. 
B)  monoacylgycerol and two free fatty acids. 
C)  bile-salt formation. 
D)  hydrolysis of membrane proteins. 
E)  emulsion formation. 
A)  phospholipid head group hydrolysis. 
B)  monoacylgycerol and two free fatty acids. 
C)  bile-salt formation. 
D)  hydrolysis of membrane proteins. 
E)  emulsion formation.

Question 18

Micelles are important for lipid absorption across the plasma membrane, but lipids are assembled into ______________ for transport through the lymph system.

Accepted Answer

The answer of Micelles are important for lipid absorption across...

Question 19

What is a limit dextrin?

Accepted Answer

Material not digeste

Question 20

Which of the following is released by the upper intestine and increases zymogen secretion?

Accepted Answer

A)  secritin 
B)  pepsin 
C)  cholecystekinin 
D)  bile salts 
E)  enteropeptidase 
A)  secritin 
B)  pepsin 
C)  cholecystekinin 
D)  bile salts 
E)  enteropeptidase

Exam 14: Digestion: Turning a Meal Into Cellular Biochemicals

Glucose transport takes place by:

The ______________ molecule brings breakdown products of proteins, sugars, and fats to the citric acid cycle in the third state of catabolism.

Why is the acidification of the stomach juices important for the digestion of proteins?

Snake venom's poison is actually:

Choose the correct answer from the list below. Not all of the answers will be used. -ɑ amylase begins the digestion of ____________ in the gut.

Snake venom has a high concentration of ______________ that digest(s) the cell membrane.

How are dietary proteins, carbohydrates, and lipids digested?

The ______________ pH of the stomach is important for the denaturation of proteins.

Complex carbohydrates are absorbed:

What is the role of cholesterol in digestion?

The pancreas releases ___________ to buffer the pH of the stomach juices.

The emulsification of lipids requires that the ______________ amphipathic molecule be released from the gall bladder.

The limit dextrin is material not digested by amylase due to the ______________.

______________ is an inactive enzyme that must be partially digested to attain full enzymatic activity.

Which of the following enzymes activates trypsin?

The pancreas releases ______________ to neutralize the acid produced in the stomach.

The result of lipase activity in digestion is:

Micelles are important for lipid absorption across the plasma membrane, but lipids are assembled into ______________ for transport through the lymph system.

What is a limit dextrin?

Which of the following is released by the upper intestine and increases zymogen secretion?

Biochemistry and the Unity of Life

Water, Weak Bonds, and the Generation of Order Out of Chaos

Amino Acids

Protein Three-Dimensional Structure

Techniques in Protein Biochemistry

Basic Concepts of Enzyme Action

Kinetics and Regulation

Mechanisms and Inhibitors

Hemoglobin: an Allosteric Protein

Carbohydrates

Lipids

Membrane Structure and Function

Signal Transduction Pathways

Metabolism: Basic Concepts and Design

Glycolysis

Gluconeogenesis

Preparation for the Cycle

Harvesting Electrons From the Cycle

The Electron Transport Chain

The Proton-Motive Force

The Light Reactions

The Calvin Cycle

Glycogen Degradation

Glycogen Synthesis

The Pentose Phosphate Pathway

Fatty Acid Degredation

Fatty Acid Synthesis

Lipid Synthesis

Amino Acid Degradation and the Urea Cycle

Amino Acids Synthesis

Nucleotide Metabolism

The Structure of Informational Macromolecules: Dna and Rna

DNA Replication

DNA Repair and Recombination

RNA Synthesis and Regulation in Prokaryotes

Gene Expression in Eukaryotes

RNA Processing in Eukaryotes

The Genetic Code

The Mechanism of Protein Synthesis

Recombinant DNA Techniques

Filters