Chapter_3_Cell_Structure_and_Function_spr09

Chapter_3_Cell_Structure_and_Function_spr09 - Chapter 3...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Chapter 3 Cell Structure and Function Basic cellular structures: 1. 2. 3. 4. ribosomes- 5. ________________________- found in plants & most prokaryotes; not in animals Two types of cells: 1. Prokaryote • simpler • lack • Bacteria & Archaea 2. Eukaryote • larger & more complex • __________________________________ (nucleus, chloroplast, mitochondria, etc) • algae, fungi, protozoa, plants, animals Viruses • Non- • Reproduce only • Lack many characteristics of • Ex. HIV virus, Rhinoviruses (colds) Arrangement of DNA in Microbial Cells • genome - a cell's • DNA is arranged to form • Prokaryotes - have a • Eukaryotes - _____________________________________ chromosomes • Nucleus- membrane-enclosed structure that contains the chromosomes – found in eukaryotes • Nucleoid- The Bacterial Cell • Cytoplasm surrounded by o Cytoplasm contains DNA in nucleoid • Envelope has o Plus structural Bacterial cell structures • cytoplasmic membrane- “fluid” selective permeability barrier made of o CM is a o Phospholipid- • ______________________________________ group faces cytoplasm or periplasm • ______________________________________ fatty acids line up inside membrane o Attraction of nonpolar fatty acid portions of one phospholipid layer for other layer result in ________________________________________ of cell membrane. o Integral membrane proteins- o Peripheral membrane proteins- are bound to o Cytoplasmic Membrane: Functions 1. Permeability barrier: a. Prevents ______________________________________ into environment. b. _______________________ (nutrients & waste products) into & out of cell • Due to ______________________________________ of membrane, only water can freely diffuse through membrane • Other compounds must be transported- usually by 2. Protein anchor- site of many proteins involved in 3. Energy conservation- site of generation & use of the a. Respiration • Eukaryotes have mitochondria to generate • In prokaryotes, b. Photosynthesis • Photosynthetic eukaryotes have • Photosynthetic prokaryotes carry out • The Bacterial Cell Wall (aka: sacculus) o made of __________________________ wrapped in circles around cell • “glyco” = Sugar chains linked to each other by • amino acid = o Structure of Peptidoglycan Backbone made of Sugars are arranged in • M-G-M-G-M-G-M-G-M-G...
View Full Document

This note was uploaded on 03/08/2009 for the course BIOL 2051 taught by Professor Brininstool during the Spring '07 term at LSU.

Page1 / 12

Chapter_3_Cell_Structure_and_Function_spr09 - Chapter 3...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online