Ch.10 - Cell SignalingWorksheetSee all chapters
All Chapters
Ch.1 - Introduction to Biology
Ch.2 - Chemistry
Ch.3 - Water
Ch 4. - Biomolecules
Ch. 5 - Cell Components
Ch.6 - The Membrane
Ch.7 - Energy and Metabolism
Ch.8 - Respiration
Ch.9 - Photosynthesis
Ch.10 - Cell Signaling
Ch.12 - Cell Division
Ch.13 - Meiosis
Ch.14 - Mendelian Genetics
Ch.15 - Chromosomal Theory of Inheritance
Ch.16 - DNA Synthesis
Ch.17 - Gene Expression
Ch.18 - Regulation of Expression
Ch.19 - Viruses
Ch.20 - Biotechnology
Ch.21 - Genomics
Ch.22 - Development
Ch.23 - Evolution by Natural Selection
Ch.24 - Evolution of Populations
Ch.25 - Speciation
Ch.26 - History of Life on Earth
Ch.27 - Phylogeny
Ch.28 - Prokaryotes
Ch.29 - Protists
Ch.30 - Plants
Ch.31 - Fungi
Ch.32 - Overview of Animals
Ch.33 - Invertebrates
Ch.34 - Vertebrates
Ch.35 - Plant Anatomy
Ch.36 - Vascular Plant Transport
Ch.37 - Soil
Ch.38 - Plant Reproduction
Ch.39 - Plant Sensation and Response
Ch.40 - Animal Form and Function
Ch.41 - Digestive System
Ch.42 - Circulatory System
Ch.43 - Immune System
Ch.44 - Osmoregulation and Excretion
Ch.45 - Endocrine System
Ch.46 - Animal Reproduction
Ch.47 - Nervous System
Ch.48 - Sensory Systems
Ch.49 - Muscle Systems
Ch.50 - Ecology
Ch.51 - Animal Behavior
Ch.52 - Population Ecology
Ch.53 - Community Ecology
Ch.54 - Ecosystems
Ch.55 - Conservation Biology
Introduction to Cell Signaling
Classes of Signaling Receptors
Types of Cell Signaling
Signal Amplification

Concept #1: Classes of Signaling Receptors

Concept #2: Cell-Surface Receptors

Concept #3: Intracellular Receptors

Practice: The molecules that convert extracellular signals into intracellular signals are:

a) Neurotransmitters.

b) Hormones.

c) Cell surface receptors.

d) Intracellular receptors.

Practice: Which type of receptor leads directly to a change in the distribution of ions on opposite sides of the membrane?

a) Receptor tyrosine kinase.

b) G protein-coupled receptor.

c) Ligand-gated ion channel.

d) Steroid receptor.

e) Intracellular receptor.

Practice: Why does testosterone, a lipid-soluble / hydrophobic signaling molecule, not affect all cells in the body but only specific cells?

a) Only target cells have the cell surface receptor able to bind with testosterone.

b) Only target cells contain the genes regulated by testosterone.

c) Only target cells possess the phosphorylation cascade uniquely activated by testosterone.

d) Only target cells possess the intracellular receptor able to bind with testosterone.