Understanding Our Environment

Understanding Our Environment

Chapter 3 Lecture Outline Cells Copyright The McGraw-Hill Companies, Inc. Permission required for reproduction or display. Outline History of Cell Theory

Modern Microscopes Eukaryotic and Prokaryotic Cells Cell Structure and Communication Cell Components

Cellular Reproduction History of Cell Theory 1665 - Cells discovered by Robert Hooke. Cell Theory: (1838) ** VIRUSES DUE NOT HAVE CELLS. Are they

ALIVE? Modern Microscopes Light Microscopes - Increase magnification as ____________ passes through a series of ____________. Compound Microscopes: Distinguishes 2 micrometers and larger

Magnifies 1500x Dissecting Microscopes (Scanning Microscopes) Three-dimensional viewing of opaque objects Magnifies 30x EUKARYOTIC VERSUS PROKARYOTIC CELLS

ALL CELLS HAVE: CLASSIFIFICATION BY TYPE OF CELLS: Prokaryotes - Cells lack a ______________________ Type of Organisms = _________ Eukaryotic - Cells contain a ____________________ Type of Organisms ________________________ Organelles - Membrane-bound bodies found which each have a particular function within eukaryotic cells PLANTS have ___________

Cell Structure and Communication in Plants Cell Wall surrounds protoplasm. Protoplasm = _____________________ Cell (Plasma) Membrane & Cytoplasm. = Bound by plasma membrane

Cytoplasm consists of all cellular components between the _________________________________. o Cytosol - _________________________ o Organelles - ______________________ Most, but not all, are bound by membranes. PLANT CELL

Drawing of plant cell Cell Size Higher plants--length between 10-100 mm m Cell of Plant, Elodea CELL WALL FUNCTION: ________________________

STRUCTURE: Main biochemical is? Also contains: Hemicellulose function = __________________ Pectin - _________________________________ Glycoproteins ____________________________

Middle lamella first part produced; Contains: ____________________________ LOCATION: __________________________ Shared by: ____________________ primary walls Secondary walls:

What cells have & why? _______________ Additional component: _______________ Location ___________ Secondary cell wall structure COMMUNICATION THROUGH CELL WALLS Plasmodesmata = _____________________

FUNCTION: ____________________________ PLASMA MEMBRANE Plasma Membrane: FUNCTIONS: ________________________________ Biochemical Composed of: ________________ Orientation of double layer OTHER COMPONENTS:

____________________ Fluid mosaic model _________________________ NUCLEUS Nucleus: FUNCTIONS: STRUCTURE Nuclear Envelope:

Nuclear Pores: Nucleoplasm plant cell Nucleoli - Composed

primarily of RNA Chromatin Strands Composed of: Become: Chromosomes Chromatids =

Centromeres = o Kinetochore = protein complex location = o Spindle fibers (made of microtubules): function = RIBOSOMES

Ribosomes COMPOSITION: STRUCTURE: FUNCTIONS: ENDOPLASMIC RETICULUM Endoplasmic reticulum Structure: 2 Types

Rough ER: has FUNCTIONS: Smooth ER FUNCTIONS: Endoplasmic reticulum and ribosomes

MICROBODIES, VESSICLES: Structure: EXAMPLES Transport Peroxisomes - Serve in Hot conditions VACUOLES VACUOLES Central Vacuole: 90% water

Tonoplast: Cell Sap: Contains dissolved substances FUNCTIONS: o o Anthocyanins (red, blue, purple)

DICTYOSOMES Dictyosomes, Golgi Apparatus STRUCTURE: FUNCTIONS: EXPORT OF Substances in VESICLES

o Migrate o Fuse o Secrete Examples: cell wall components, nectars, and oils .

MITOCHONDRIA Mitochondria Overall Function: STRUCTURE Cristae. Matrix Drawing of a mitochondrion

AEROBIC RESPIRATION: C6H12O6 + O2 - CO2 + H2O + ENERGY ATP CYTOSKELETON Cytoskeleton: General Function: TYPES Microtubules:

Functions: o Move cellulose for: Cell Wall Microtubules - Functions oFound in flagella and cilia for: oFound

in spindles for: in Microfilaments - Role in cytoplasmic streaming PLASTIDS Plastids =

CHLOROPLASTS: STRUCTURE: Membrane Grana and thylakoids TEM and drawing of chloroplast structure Structure Stroma:

Small circular DNA molecule: Replication: EQUATION: CO2 + H2O + Light Energy + Chlorophyll -- C6H12O6 + O2 + H2O . Plastids CHROMOPLASTS

Structure Function: LEUCOPLASTS Structure Amyloplasts:

Elaioplasts: Chromoplasts in red pepper cells Amyloplasts in Potato cells Cellular Reproduction & The Cell Cycle Cell Cycle = Divided into:

ONION ROOT TIP with cells in various stages of Interphase and phases of Mitosis Interphase: Amount of Life Cycle? STAGES G1 = 1ST GROWTH:

S = SYNTHESIS: G2 = 2nd GROWTH: Interphase & Mitosis in Onion Root Cells MITOSIS

Mitosis = Produces: number of cells Location in Plants: Is a continuous process-- 4 phases: Prophase Chromosomes o Spindle fibers collectively spindle

o Nuclear envelope and nucleolus: Prophase Metaphase Chromosomes align: Metaphase

Anaphase Spindle fibers: Chromosomes & Sister chromatids: Daughter Chromosomes. Anaphase Telophase Nuclear envelope & Nucleoli:

Daughter chromosomes: Spindle fibers: Cytokinesis: Telophase cell plate: Cell plate formation Review

History of Cell Theory Modern Microscopes Eukaryotic and Prokaryotic Cells Cell Structure and Communication

Cell Components Cellular Reproduction Onion Root Elodea Leaf

Recently Viewed Presentations

  • Biochemistry - North East Independent School District

    Biochemistry - North East Independent School District

    Biochemistry. Monomers can be joined together to form polymers when water is removed. ... CHON - Carbon, Hydrogen, Oxygen, and Nitrogen . Monomer- Amino Acid. 20 different types depending on. R-groups. Polymer -polypeptide. Shape. determines the protein's . function. Held...
  • Transportation FIT meeting 2-5-2014

    Transportation FIT meeting 2-5-2014

    Transportation Framework Implementation Team (T-FIT) February 5th, 2014 Agenda Reports and Demonstrations Data Sharing Agreements Brett Juul Current data sharing agreement status and data distribution Recent/Future Contracts Brett Juul Aliases and addresses on hwys Jurisdiction on all roads (MSAG) OR-Trans...
  • Early Boston Neurology James Jackson Putnam (1846-1918)

    Early Boston Neurology James Jackson Putnam (1846-1918)

    Early Boston Neurology. James Bourne Ayers, MD (1882-1903) HMS (1907), then MGH . WWI developed method of puncture cisterna magna . 1st in animals, then humans (1917) At MGH, CSF lab compared measurements of lumber & CM. Measured protein content...
  • Wave Propagation Presented by: Bob Kenyon - K8LJ

    Wave Propagation Presented by: Bob Kenyon - K8LJ

    Wave Propagation Presented by: Bob Kenyon - K8LJ CRES Amateur Radio Club 4/22/2008 Agenda Introduction and background Basic propagation concepts Propagation software overview Modeling program examples Demo of W6ELProp and Ionoscope Open discussion & conclusion Some Propagation Terms Critical Frequency...
  • 25 minutes 250 words You have just been

    25 minutes 250 words You have just been

    Sibilance. An exclamation mark. A sentence beginning with a simile. INCLUDE: DISENCHANTED (Disappointed by something previously respected or admired) 25 minutes . 250 words. You have just visited Westminster Bridge. Write a persuasive speech encouraging others to visit.
  • GCSE Reform - Walthamstow School for Girls

    GCSE Reform - Walthamstow School for Girls

    Year 11 Information Evening Tuesday 6th November 2018. The aim of this evening is to provide you with details on key events your daughter will need to prepare for this year and how to support her in core subjects: *...
  • INT222 - Internet Fundamentals - Seneca College

    INT222 - Internet Fundamentals - Seneca College

    SENECA COLLEGE. Good morning and welcome back. I hope you all had a great summer. This photo is a rendering of our Peterborough Airport campus which is well under way for our January 2014 opening. And the entire design and...
  • Preparing Bankable Projects FEASIBILITY STUDIES & TECHNICAL ASSISTANCE

    Preparing Bankable Projects FEASIBILITY STUDIES & TECHNICAL ASSISTANCE

    Ho Chi Minh City Metro Integrated Telecommunications Control Center Feasibility Study (completed in 2016) India Smart Solutions for Smart Cities Reverse Trade Mission Series (completed in 2018) Ongoing Support for ICT Development in the Indo-Pacific Region