Question 1

Thalassemia is most often caused by an error in

Accepted Answer

A)  mitochondrial DNA 
B)  homologous crossover 
C)  meiosis 
D)  mRNA splicing 
E)  translation 
A)  mitochondrial DNA 
B)  homologous crossover 
C)  meiosis 
D)  mRNA splicing 
E)  translation

Question 2

Which allosteric effector has the greatest ability to stabilize the deoxy state of hemoglobin?

Accepted Answer

A)  bPG 
B)  CO2 
C)  O2 
D)  H+ 
E)  all of the above have equal ability 
A)  bPG 
B)  CO2 
C)  O2 
D)  H+ 
E)  all of the above have equal ability

Question 3

Coactivators

Accepted Answer

A)  bind at the ligand-binding domain of nuclear receptors 
B)  bind when the receptor is not yet bound to the hormone 
C)  bind in the cytosol when the hormone-receptor complexes forms 
D)  repress gene transcription 
E)  must be present for the receptor-ligand complex to bind the HRE 
A)  bind at the ligand-binding domain of nuclear receptors 
B)  bind when the receptor is not yet bound to the hormone 
C)  bind in the cytosol when the hormone-receptor complexes forms 
D)  repress gene transcription 
E)  must be present for the receptor-ligand complex to bind the HRE

Question 4

The acetylcholine receptor is an example of a(n)

Accepted Answer

A)  nuclear receptor 
B)  ion channel-linked receptor 
C)  7-transmembrane helix (7TM) type receptor 
D)  tyrosine kinase receptor 
E)  enzyme-linked receptor 
A)  nuclear receptor 
B)  ion channel-linked receptor 
C)  7-transmembrane helix (7TM) type receptor 
D)  tyrosine kinase receptor 
E)  enzyme-linked receptor

Question 5

Sickle cell hemoglobin does not form fibers in the ______ form.

Accepted Answer

The answer of Sickle cell hemoglobin does not form fibers...

Question 6

Proteins such as hemoglobin are known as ________ proteins since binding of a molecule to one site alter binding to other sites.

Accepted Answer

A)  ligand-activated 
B)  allosteric 
C)  induced-fit 
D)  catalytic 
E)  none of the above 
A)  ligand-activated 
B)  allosteric 
C)  induced-fit 
D)  catalytic 
E)  none of the above

Question 7

Models of allosterism describe the conformational change between the tense (T; low affinity) and the relaxed (R; high affinity) states of protein structure. These include a concerted model, in which subunits of proteins transition between T and R states one at a time, and a sequential model, where all subunits transition between the T and R states at the same time, as regulators bind.

Accepted Answer

A)  Both sentences are true 
B)  Both sentences are false 
C)  The first sentence is true and the second sentence is false 
D)  The first sentence is false and the second sentence is true 
A)  Both sentences are true 
B)  Both sentences are false 
C)  The first sentence is true and the second sentence is false 
D)  The first sentence is false and the second sentence is true

Question 8

Most nuclear receptor proteins include

Accepted Answer

A)  a zinc-finger motif 
B)  a ligand binding domain with a hydrophobic cleft 
C)  cys and his residues that can chelate Zn ion 
D)  All of the above 
A)  a zinc-finger motif 
B)  a ligand binding domain with a hydrophobic cleft 
C)  cys and his residues that can chelate Zn ion 
D)  All of the above

Question 9

As associated with hemoglobin, heme is considered a _____.

Accepted Answer

A)  catalyst 
B)  subunit 
C)  coenzyme 
D)  cofactor 
E)  none of the above 
A)  catalyst 
B)  subunit 
C)  coenzyme 
D)  cofactor 
E)  none of the above

Thalassemia is most often caused by an error in

Which allosteric effector has the greatest ability to stabilize the deoxy state of hemoglobin?

Coactivators

The acetylcholine receptor is an example of a(n)

Sickle cell hemoglobin does not form fibers in the ______ form.

Proteins such as hemoglobin are known as ________ proteins since binding of a molecule to one site alter binding to other sites.

Most nuclear receptor proteins include

As associated with hemoglobin, heme is considered a _____.

The Chemical Foundations of Biochemistry

Nucleic Acids

Proteins I

Proteins Iienzymes

Membranes and an Introduction to Signal Transduction

Carbohydrates I

The Common Catabolic Pathway

Carbohydrates II

Lipids I

Lipids II

Amine Metabolism

Metabolism Integration

Nucleotide Deoxynucleotide Metabolism

Dna Replication, Damage and Repair

Rna Synthesis

Protein

Control of Gene

Determination of Macromolecular Structure

Designer Proteins and Protein Folding

Biomolecule Purification

Bioinformatics and Omics

Signal

Protein Trafficking

Photosynthesis Nitrogen

Filters

Exam 19: Allosterism and Receptor-Ligand

Thalassemia is most often caused by an error in

Which allosteric effector has the greatest ability to stabilize the deoxy state of hemoglobin?

Coactivators

The acetylcholine receptor is an example of a(n)

Sickle cell hemoglobin does not form fibers in the ______ form.

Proteins such as hemoglobin are known as ________ proteins since binding of a molecule to one site alter binding to other sites.

Most nuclear receptor proteins include

As associated with hemoglobin, heme is considered a _____.

The Chemical Foundations of Biochemistry

Nucleic Acids

Proteins I

Proteins Iienzymes

Membranes and an Introduction to Signal Transduction

Carbohydrates I

The Common Catabolic Pathway

Carbohydrates II

Lipids I

Lipids II

Amine Metabolism

Metabolism Integration

Nucleotide Deoxynucleotide Metabolism

Dna Replication, Damage and Repair

Rna Synthesis

Protein

Control of Gene

Determination of Macromolecular Structure

Designer Proteins and Protein Folding

Biomolecule Purification

Bioinformatics and Omics

Signal

Protein Trafficking

Photosynthesis Nitrogen

Filters