Question 1

Between meals, the blood glucose levels are regulated mostly by

Accepted Answer

A)  glycogen phosphorylase 
B)  insulin 
C)  glucagon 
D)  epinephrine 
E)  insulin and glucagon
F) none of these 
A)  glycogen phosphorylase 
B)  insulin 
C)  glucagon 
D)  epinephrine 
E)  insulin and glucagon
F) none of these

Question 2

Which of the following is a second messenger?

Accepted Answer

A)  Cyclic AMP 
B)  GTP-binding proteins. 
C)  Proteins kinases. 
D)  Phospholipase C. 
E)  All of these can act as second messengers. 
A)  Cyclic AMP 
B)  GTP-binding proteins. 
C)  Proteins kinases. 
D)  Phospholipase C. 
E)  All of these can act as second messengers.

Question 3

Hormone activity frequently turns metabolic pathways on and off by adding phosphate to or removing it from lipids within the cell.

Accepted Answer

A) True 
 B)False

Question 4

Which of the following cell types does not respond to insulin?

Accepted Answer

A)  muscle cells 
B)  adipocytes 
C)  liver cells 
D)  breast tumor cells 
E)  all of these respond to insulin 
A)  muscle cells 
B)  adipocytes 
C)  liver cells 
D)  breast tumor cells 
E)  all of these respond to insulin

Question 5

A second messenger is

Accepted Answer

A)  a substance that brings about a desired effect in a cell as a result of a hormone binding to its receptor on the cell surface 
B)  a hormone that acts on a target cell, not one of the releasing factors or trophic hormones that act on specific endocrine glands 
C)  a hormone that affects the DNA of the target cell 
D)  a specialized form of mRNA 
A)  a substance that brings about a desired effect in a cell as a result of a hormone binding to its receptor on the cell surface 
B)  a hormone that acts on a target cell, not one of the releasing factors or trophic hormones that act on specific endocrine glands 
C)  a hormone that affects the DNA of the target cell 
D)  a specialized form of mRNA

Question 6

Proteins eaten in excess can be stored to satisfy future protein requirements.

Accepted Answer

A) True 
 B)False

Question 7

​ Explain how the protein leptin stimulates the oxidation of fatty acids and the uptake of glucose by muscle cells.

Accepted Answer

Leptin stimulates the oxidation of fatty

Question 8

​  Explain the role that the citric acid cycle plays in metabolism.

Accepted Answer

The citric acid cycle has a key role in

Question 9

Regulatory cascades have what advantage over direct action by the signal molecule?

Accepted Answer

A)  Amplification. 
B)  Fine tuning of regulatory effects. 
C)  Coordinated response among multiple systems. 
D)  All of these 
A)  Amplification. 
B)  Fine tuning of regulatory effects. 
C)  Coordinated response among multiple systems. 
D)  All of these

Question 10

Amino acid and protein hormones usually act by binding to a receptor on the cell surface.

Accepted Answer

A) True 
 B)False

Question 11

Which of the following is not a macronutrient?

Accepted Answer

A)  carbohydrates 
B)  fats 
C)  proteins 
D)  iron 
A)  carbohydrates 
B)  fats 
C)  proteins 
D)  iron

Question 12

When cyclic AMP is a second messenger

Accepted Answer

A)  cyclic AMP inhibits a protein kinase 
B)  the binding of hormone produces the desired effect in the cell by stimulating the production of cyclic AMP 
C)  the G protein plays no role 
D)  a target enzyme is phosphorylated with cyclic AMP as the source of the phosphate group 
A)  cyclic AMP inhibits a protein kinase 
B)  the binding of hormone produces the desired effect in the cell by stimulating the production of cyclic AMP 
C)  the G protein plays no role 
D)  a target enzyme is phosphorylated with cyclic AMP as the source of the phosphate group

Question 13

Which of the following is NOT true?

Accepted Answer

A)  obese individulas are more likely to get cancer 
B)  diabetic individuals are more likely to get cancer 
C)  when obese or diabetic patients get cancer, they are more likely to die from it 
D)  cancer strikes lean and healthy people with the same odds as it strikes obese and diabetic people 
A)  obese individulas are more likely to get cancer 
B)  diabetic individuals are more likely to get cancer 
C)  when obese or diabetic patients get cancer, they are more likely to die from it 
D)  cancer strikes lean and healthy people with the same odds as it strikes obese and diabetic people

Between meals, the blood glucose levels are regulated mostly by

Which of the following is a second messenger?

Hormone activity frequently turns metabolic pathways on and off by adding phosphate to or removing it from lipids within the cell.

Which of the following cell types does not respond to insulin?

A second messenger is

Proteins eaten in excess can be stored to satisfy future protein requirements.

Explain how the protein leptin stimulates the oxidation of fatty acids and the uptake of glucose by muscle cells.

Explain the role that the citric acid cycle plays in metabolism.

Regulatory cascades have what advantage over direct action by the signal molecule?

Amino acid and protein hormones usually act by binding to a receptor on the cell surface.

Which of the following is not a macronutrient?

When cyclic AMP is a second messenger

Which of the following is NOT true?

Biochemistry and the Organization of Cells

Water the Solvent for Biochemical Reactions

Amino Acids and Peptides

The Three Dimensional Structure of Proteins

Protein Purification and Characterization Techniques

The Behavior of Proteins Enzymes

The Behavior of Proteins Enzymes Mechanisms and Control

Lipids and Proteins Are Associated in Biological Membranes

Nucleic Acids How Structure Conveys Information

Biosynthesis of Nucleic Acids Replication

Transcription of the Genetic Code the Biosynthesis of Rna

Protein Synthesis Translation of the Genetic Message

Nucleic Acid Biotechnology Techniques

Viruses Cancer and Immunology

The Importance of Energy Changes and Electron Transfer in Metabolism

Carbohydrates

Glycolysis

Storage Mechanisms and Control in Carbohydrate Metabolism

The Citric Acid Cycle

Electron Transport and Oxidative Phosphorylation

Lipid Metabolism

Photosynthesis

The Metabolism of Nitrogen

Filters

Exam 24: Integration of Metabolism Cellular Signaling

Between meals, the blood glucose levels are regulated mostly by

Which of the following is a second messenger?

Hormone activity frequently turns metabolic pathways on and off by adding phosphate to or removing it from lipids within the cell.

Which of the following cell types does not respond to insulin?

A second messenger is

Proteins eaten in excess can be stored to satisfy future protein requirements.

​ Explain how the protein leptin stimulates the oxidation of fatty acids and the uptake of glucose by muscle cells.

​ Explain the role that the citric acid cycle plays in metabolism.

Regulatory cascades have what advantage over direct action by the signal molecule?

Amino acid and protein hormones usually act by binding to a receptor on the cell surface.

Which of the following is not a macronutrient?

When cyclic AMP is a second messenger

Which of the following is NOT true?

Biochemistry and the Organization of Cells

Water the Solvent for Biochemical Reactions

Amino Acids and Peptides

The Three Dimensional Structure of Proteins

Protein Purification and Characterization Techniques

The Behavior of Proteins Enzymes

The Behavior of Proteins Enzymes Mechanisms and Control

Lipids and Proteins Are Associated in Biological Membranes

Nucleic Acids How Structure Conveys Information

Biosynthesis of Nucleic Acids Replication

Transcription of the Genetic Code the Biosynthesis of Rna

Protein Synthesis Translation of the Genetic Message

Nucleic Acid Biotechnology Techniques

Viruses Cancer and Immunology

The Importance of Energy Changes and Electron Transfer in Metabolism

Carbohydrates

Glycolysis

Storage Mechanisms and Control in Carbohydrate Metabolism

The Citric Acid Cycle

Electron Transport and Oxidative Phosphorylation

Lipid Metabolism

Photosynthesis

The Metabolism of Nitrogen

Filters

Explain how the protein leptin stimulates the oxidation of fatty acids and the uptake of glucose by muscle cells.

Explain the role that the citric acid cycle plays in metabolism.