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Figure 3.21 The widely used RTK signal transduction pathway
Figure 3.22 Activation of MITF transcription factor through the binding of stem cell factor by the Kit RTK protein (Part 2)
Tunicate life cycle
Part Figure II.2 Autonomous specification in the early tunicate embyro (Part 1)
Part Figure II.2 Autonomous specification in the early tunicate embyro (Part 2)
Part Figure II.3 Microsurgery on tunicate eggs forces some of the yellow crescent cytoplasm of the muscle-forming B4.1 blastomeres to enter the b4.2 blastomere pair
Part Figure II.4 Conditional specification
Part Figure II.6 Roux’s attempt to demostrate autonomous specification
Part Figure II.7 Driesch’s demonstration of conditional specification
Part Figure II.9 The “French flag” analogy for conditional specification (Part 1)
Part Figure II.9 The “French flag” analogy for conditional specification (Part 2)
Figure 3.13 Ectodermal competence and the ability to respond to the optic vesicle inducer in Xenopus.
Developmental Biology The Development of a Frog Zebrafish embryo development - 24 hours in 46 seconds
Cell Communication (Chpt. 11) Chapter 11. Overview of Cell Signaling Signaling evolved early in history of life Communicating cells may be close together.
4.A.3 Cell Specialization Interactions between external stimuli and regulated gene expression result in specialization of cells, tissues and organs.
Figure 13.9 Initiation and elongation steps of transcription.
The Three Stages of Cell Signaling By: Madeline Meyer and Carlos Sanchez ReceptionTransductionResponse.
Targil – Signal transduction. (Further acting – through the bloodstream – endocrine) Communication between cells.
B. Signal Transduction Pathway (cell signaling) 1. Process by which a signal on a cell surface is converted into a specific cellular response Multistep.
Signal Transduction. Figure 15-3 Figure 15-4 Table 15-1a.
Negative regulation of cell cycle by intracellular signals Checkpoint p53 detects DNA damage & activates p21 p21 inhibits cdk2-cyclinA Intracellular Regulation.
Development of a complex multicellular organism is more than just mitosis- we certainly do not look like gigantic fertilized eggs. Zygote -> many specialized.
CONCEPT 18.4: A PROGRAM OF DIFFERENTIAL GENE EXPRESSION LEADS TO THE DIFFERENT CELL TYPES IN A MULTICELLULAR ORGANISM.
10-3 Regulating the Cell Cycle Reading: Homework Sheet: 10-3.
CELL CONNECTIONS & COMMUNICATION AP Biology Ch.6.7; Ch. 11.
Embryonic Development & Cell Differentiation. During embryonic development, a fertilized egg gives rise to many different cell types Cell types are organized.
Cell Cycle Regulation Chapter – Pt. 1 Pgs Objective: I can describe and how the cell cycle is regulated and controlled to occur at certain.
Inside of cell Outside of cell Carrier proteins allow glucose to enter a cell at a faster rate than would be possible by simple diffusion across the membrane.
21.1 – 1 As you learned in chapter 12, mitosis gives rise to two daughter cells that are genetically identical to the parent cell. Yet you, the product.
Biological Hierarchy:. Cell to Cell Communication Involves (and you should review): Structure of plasma membranes Diffusion vs. active transport Hydrophobic.
11.1 External signals are converted to responses within the cell Cell Communication https://www.youtube.com/watch?v=TVfmUfr8VPA.
CAMPBELL BIOLOGY IN FOCUS © 2014 Pearson Education, Inc. Urry Cain Wasserman Minorsky Jackson Reece Lecture Presentations by Kathleen Fitzpatrick and Nicole.
Entwickslungmechanik Developmental Mechanisms. Cell Specification Autonomous Conditional Syncytial.
P247. Figure 9-1 p248 Figure 9-2 p251 p251 Figure 9-3 p253.
Lecture #9Date______ n Chapter 21~ The Genetic Basis of Development.
Fig Nuclear Receptors. Fig Shiu et al. (1998) Cell 95: Estrogen Receptor LBD with agonist -helix from interact- ing co- activator.
Regulation of Cell Number and Cancer Cells Special Limited Edition Packet Tuesday, November 10,
Chapter 26 Opener. Figure 26.1 Patterns of Early Shoot Development.
Chapters 47 & 21 Animal Development & The Genetic Basis of Development.
Fig Fig Gene for a glycolysis enzyme Hemoglobin gene Antibody gene Insulin gene White blood cell Pancreas cell Nerve cell Active gene Key.
基 督 再 來 （一）. 經文： 1 你們心裡不要憂愁；你們信神，也當信我。 2 在我父的家裡有許多住處；若是沒有，我就早 已告訴你們了。我去原是為你們預備地去 。 3 我 若去為你們預備了地方，就必再來接你們到我那 裡去，我在 那裡，叫你們也在那裡， ] ( 約 14 ： 1-3)
MCDB 4650 Cell Signaling in Development. Why might a cell (cell 1) activate a transcription factor in response to a growth factor binding an RTK while.
Cell Communication. Overview: The Cellular Internet Cell-to-cell communication is absolutely essential for multicellular organisms Nerve cells must communicate.
GENE REGULATION RESULTS IN DIFFERENTIAL GENE EXPRESSION, LEADING TO CELL SPECIALIZATION Eukaryotic DNA.
Cell-cell Communications in Development. Induction and Competence What do we mean by induction? How do we define define competence? competence?
Response: Cell signaling leads to regulation of transcription or cytoplasmic activities Chapter 11.4.
Developmental Biology An Understanding of Everything.
Information in Biology. Outline What is synthetic biology? Biological Clocks The “Repressilator” Signal transduction The “Diverter”
Genes in development Signal transduction pathways and transcription factors.
Chapter 15 Baboon text Cell Signaling and Communication 15.1 What Are Signals, and How Do Cells Respond to Them? Cells receive signals from 1. Physical.
Chapter 45 Hormones and the Endocrine System. The Body’s Long-Distance Regulators The Body’s Long-Distance Regulators An animal hormone An animal hormone.
Development of Model Systems Xenopus laevis Part II Chapter 7.
Cell Identity Determined by types and amounts of proteins in the cell Protein identities and amounts controlled by gene expression Differential gene expression.
Transcription begins - Cell gets message that a protein needs to be made & a portion of DNA unwinds exposing the gene that needs to be copied.
Fertilization. Sperm What is involved in the maturation of a sperm cell?
11.3 Transduction: Cascades of molecular interactions relay signals from receptors to target molecules in the cell Signal transduction usually involves.
CELL COMMUNICATION. YOU MUST KNOW… THE 3 STAGES OF CELL COMMUNICATION: RECEPTION, TRANSDUCTION, AND RESPONSE HOW G-PROTEIN-COUPLED RECEPTORS RECEIVE CELL.
Embryonic Development Involves 3 Components: 1. Cell Division- The mitotic increase in the number of cells. 2. Differentiation- The development of specialized.
Transduction of Extracellular Signals Specific receptors in plasma membranes respond to external chemicals (ligands) that cannot cross the membrane: hormones,
Specialized cell signaling pathways 2 Dr. Tania A. Shakoori.
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