Question 1

Which of the enzymes below does diacylglycerol (DAG)recruit and activate?

Accepted Answer

A) phosphatidylinositol (PI)-specific phospholipase C-β 
B) protein kinase A 
C) protein kinase C 
D) glycogen phosphorylase 
E) phosphorylase kinase 
A) phosphatidylinositol (PI)-specific phospholipase C-β 
B) protein kinase A 
C) protein kinase C 
D) glycogen phosphorylase 
E) phosphorylase kinase

Question 2

What role doescarbon number 1 of the inositol ring of phosphatidylinositol play?

Accepted Answer

A) It binds to steroid receptors. 
B) It links inositol to diacylglycerol. 
C) It links a phosphate group to diacyglycerol. 
D) It links glucose to diacylglycerol. 
E) It links two diacyglycerol molecules together. 
A) It binds to steroid receptors. 
B) It links inositol to diacylglycerol. 
C) It links a phosphate group to diacyglycerol. 
D) It links glucose to diacylglycerol. 
E) It links two diacyglycerol molecules together.

Question 3

The Gprotein-coupled receptor family of proteins often contain seven ____________________________ as a structural motif.

Accepted Answer

A) tyrosine-methionine dipeptides 
B) transmembrane β-pleated sheets 
C) transmembrane α-helices 
D) methionine-tryptophan dipeptides 
E) nucleotides attached 
A) tyrosine-methionine dipeptides 
B) transmembrane β-pleated sheets 
C) transmembrane α-helices 
D) methionine-tryptophan dipeptides 
E) nucleotides attached

Question 4

In which of the following biological processes is nitric oxide not involved?

Accepted Answer

A) anticoagulation 
B) neurotransmission 
C) smooth muscle relaxation 
D) visual perception 
E) hearing 
A) anticoagulation 
B) neurotransmission 
C) smooth muscle relaxation 
D) visual perception 
E) hearing

Question 5

Which molecule below is NOT likely to act as either a neurotransmitter or hormone?

Accepted Answer

A) glucose 
B) glycine 
C) dopamine 
D) eicosanoids 
E) thyroid hormone 
A) glucose 
B) glycine 
C) dopamine 
D) eicosanoids 
E) thyroid hormone

Question 6

What does the interaction between arrestin and clathrin promote?

Accepted Answer

A) the uptake of free hormone 
B) the uptake of phosphorylated GPCRs into the cell by exocytosis 
C) the uptake of phosphorylated GPCRs into the cell by endocytosis 
D) the expulsion of phosphorylated GPCRs from the cell by exocytosis 
E) the secretion of GPCRs 
A) the uptake of free hormone 
B) the uptake of phosphorylated GPCRs into the cell by exocytosis 
C) the uptake of phosphorylated GPCRs into the cell by endocytosis 
D) the expulsion of phosphorylated GPCRs from the cell by exocytosis 
E) the secretion of GPCRs

Question 7

The passage of signals back and forth between different pathways is referred to as _________.

Accepted Answer

A) divergence 
B) convergence 
C) cross-talk 
D) transvergence 
E) coherence 
A) divergence 
B) convergence 
C) cross-talk 
D) transvergence 
E) coherence

Question 8

What group of enzymes phosphorylates most of the carbons on inositol?

Accepted Answer

A) phospholipases 
B) phosphoinositide kinases 
C) phosphorylases 
D) phosphodiesterases 
E) phosphatases 
A) phospholipases 
B) phosphoinositide kinases 
C) phosphorylases 
D) phosphodiesterases 
E) phosphatases

Question 9

Which heterotrimeric G proteins couple receptors to adenylyl cyclase via the activation of GTP-bound Gα subunits?

Accepted Answer

A) Gs family 
B) Gq family 
C) Gi family 
D) G12/13 family 
E) Gr family 
A) Gs family 
B) Gq family 
C) Gi family 
D) G12/13 family 
E) Gr family

Which of the enzymes below does diacylglycerol (DAG)recruit and activate?

What role doescarbon number 1 of the inositol ring of phosphatidylinositol play?

The Gprotein-coupled receptor family of proteins often contain seven ____________________________ as a structural motif.

In which of the following biological processes is nitric oxide not involved?

Which molecule below is NOT likely to act as either a neurotransmitter or hormone?

What does the interaction between arrestin and clathrin promote?

The passage of signals back and forth between different pathways is referred to as _________.

What group of enzymes phosphorylates most of the carbons on inositol?

Which heterotrimeric G proteins couple receptors to adenylyl cyclase via the activation of GTP-bound G_α subunits?

Introduction to the Study of Cell and Molecular Biology

The Chemical Basis of Life

Bioenergetics, Enzymes and Metabolism

The Structure and Function of the Plasma Membrane

Aerobic Respiration and the Mitochondrion

Photosynthesis and the Chloroplast

Interactions Between Cells and Their Environment

Cytoplasmic Membrane Systems: Structure, Function, and Membrane Trafficking

The Cytoskeleton and Cell Motility

The Nature of the Gene and the Genome

Gene Expression: From Transcription to Translation

Control of Gene Expression

Dna Replication and Repair

Cellular Reproduction

Cancer

The Immune Response

Techniques in Cell and Molecular Biology

Filters

Exam 15: Cell Signaling and Signal Transduction: Communication Between Cells

Which of the enzymes below does diacylglycerol (DAG)recruit and activate?

What role doescarbon number 1 of the inositol ring of phosphatidylinositol play?

The Gprotein-coupled receptor family of proteins often contain seven ____________________________ as a structural motif.

In which of the following biological processes is nitric oxide not involved?

Which molecule below is NOT likely to act as either a neurotransmitter or hormone?

What does the interaction between arrestin and clathrin promote?

The passage of signals back and forth between different pathways is referred to as _________.

What group of enzymes phosphorylates most of the carbons on inositol?

Which heterotrimeric G proteins couple receptors to adenylyl cyclase via the activation of GTP-bound Gα subunits?

Introduction to the Study of Cell and Molecular Biology

The Chemical Basis of Life

Bioenergetics, Enzymes and Metabolism

The Structure and Function of the Plasma Membrane

Aerobic Respiration and the Mitochondrion

Photosynthesis and the Chloroplast

Interactions Between Cells and Their Environment

Cytoplasmic Membrane Systems: Structure, Function, and Membrane Trafficking

The Cytoskeleton and Cell Motility

The Nature of the Gene and the Genome

Gene Expression: From Transcription to Translation

Control of Gene Expression

Dna Replication and Repair

Cellular Reproduction

Cancer

The Immune Response

Techniques in Cell and Molecular Biology

Filters

Which heterotrimeric G proteins couple receptors to adenylyl cyclase via the activation of GTP-bound G_α subunits?