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

Concept #1: Signal Amplification

Practice: Kinases and phosphatases are essential to the cell because they:

a) Are enzymes that synthesize proteins.

b) Are enzymes that degrade proteins.

c) Are enzymes that can turn proteins “on” and/or “off” through changes in phosphorylation.

d) Are enzymes that can turn proteins “on” and/or “off” through changes in proton concentrations.

e) None of the above.

Practice: What role do phosphatases play in signal transduction pathways?

a) They phosphorylate proteins involved in signal transduction or cellular response.

b) They activate protein kinases by phosphorylation.

c) They amplify the signal molecule.

d) They regulate the function of proteins involved in signal transduction pathways or cellular response.

Concept #2: Phosphorylation Cascades

Practice: Phosphorylation cascades are useful signal transduction pathways because they ________.

a) Allow proteins to be easily activated by adding or removing a phosphate group.

b) Allow proteins to be easily deactivated by adding or removing a phosphate group.

c) Amplify the original signal many times.

d) All of the above.