Bell Ringer Name 2 differences between plant and animal cells. What are membrane-bound structures in eukaryotic cells with specialized functions called?

Ch. 7 Cellular Basis of Life Modified & Adapted from www.worldofteaching.com

Key Concepts: Chapter 7 & Chapter 8 1. If the cell were a city, what structures or buildings would the following be? Nucleus, Mitochondrion, Plasma membrane, Ribosomes 2.  Name 2 differences between plant and animal cells. 3. What are membrane-bound structures in eukaryotic cells with specialized functions called? 4. Name 2 characteristics of prokaryotes. 5. Name a kingdom in which the members are eukaryotes.  6. If you put a piece of lettuce in a dish of saltwater, what will happen to the lettuce cells? 7. What is the function of the plasma membrane? 8. Give an everyday example of passive transport. 9. What process does the decrease in surface area to volume ratio cause to slow down so much that the cell can’t function?

SWBAT Scale 4: Same as a 3.0 but I can make inferences & application to the SWBAT’s 3: I COMPLETELY understand all parts of the SWBAT 2: I understand MOST of the SWBAT’s with teacher help 1: I understand a little of the SWBAT’s but need teacher help 0: I do NOT understand any part of the SWBAT’s and need help!

Video Before you go through these notes, watch the following video to preview The Discovery of Cells. The Discovery of Cells

Cell Theory 1665 - Robert Hooke observed cork under microscope called little boxes he saw “cells”

Cell Theory Anton van Leeuwenhoek discovered organisms too small to see with the naked eye (his microscope had only one lens)

With making of compound microscopes: Schleiden - observed all plants are made of cells Schwann - observed all animals are made of cells

Schleiden, Schwann, and Virchow contributed to cell theory which states: 1. all organisms are composed of one of more cells 2. the cell is the basic unit of organization of organisms 3. all cells come from pre-existing cells

Studying Cells 1. Light microscopes magnify and focus light reflecting off or passing through specimens limited to about 2500x magnification

Studying Cells 2. Electron Microscopes passes electrons over or through an object to form a magnified image focused by electromagnets image is captured on screen or photographic film

Types of Electron Microscopes Transmission Electron Microscope (TEM) passes beam of electrons through object (2D) Scanning Electron Microscope (SEM) bounces electrons off the surface of object (3D)

Cell Types Eukaryote: Has a nucleus Prokaryote: Lacks nucleus Ex. Animal & plant cells Prokaryote: Lacks nucleus Ex. bacteria

Key Concepts: Chapter 7 & Chapter 8 1. If the cell were a city, what structures or buildings would the following be? Nucleus, Mitochondrion, Plasma membrane, Ribosomes 2.  Name 2 differences between plant and animal cells. 3. What are membrane-bound structures in eukaryotic cells with specialized functions called? 4. Name 2 characteristics of prokaryotes. 5. Name a kingdom in which the members are eukaryotes.  6. If you put a piece of lettuce in a dish of saltwater, what will happen to the lettuce cells? 7. What is the function of the plasma membrane? 8. Give an everyday example of passive transport. 9. What process does the decrease in surface area to volume ratio cause to slow down so much that the cell can’t function?

SWBAT Scale 4: Same as a 3.0 but I can make inferences & application to the SWBAT’s 3: I COMPLETELY understand all parts of the SWBAT 2: I understand MOST of the SWBAT’s with teacher help 1: I understand a little of the SWBAT’s but need teacher help 0: I do NOT understand any part of the SWBAT’s and need help!

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