Back to Course

SS1: BIOLOGY - 1ST TERM

0% Complete
0/0 Steps
  1. Introduction to Biology | Week 1
    6 Topics
    |
    2 Quizzes
  2. Recognizing Living Things | Week 2
    3 Topics
    |
    1 Quiz
  3. Organisation of Life | Week 3
    3 Topics
    |
    2 Quizzes
  4. Classification of Living Organisms | Week 4
    6 Topics
    |
    2 Quizzes
  5. Kingdom Prokaryotae / Monera & Kingdom Protista | Week 5
    4 Topics
    |
    3 Quizzes
  6. Kingdom Fungi & Kingdom Plantae | Week 6
    10 Topics
    |
    2 Quizzes
  7. Kingdom Animalia I | Week 7
    7 Topics
    |
    1 Quiz
  8. Kingdom Animalia II | Week 8
    6 Topics
    |
    2 Quizzes
  9. The Cell | Week 9
    4 Topics
    |
    1 Quiz
  10. The Cell Structure and Functions | Week 10
    5 Topics
    |
    1 Quiz
  11. The Cell and its Environment | Week 11
    5 Topics
    |
    1 Quiz
  12. Nutrition in Plants | Week 12
    5 Topics
    |
    1 Quiz



Lesson Progress
0% Complete

Topic Content:

  • Structure of Bacteria
  • Bacterial Shape
  • Structure of Blue-green Algae

The simplest living organisms, the bacteria and the blue-green algae belong to Kingdom Monera. Bacteria are found inside living organisms, water, air and soil while blue-green algae are found on land, mainly in fresh water and damp areas.

Bacteria are of great importance to mankind. Some are harmful while others may be useful to us.

Structure of Bacteria:

The structure of bacteria is known for its simple body design. The diagram below portrays the structures and features of a typical bacterial cell.

structure of bacteria
Structure of bacterium.

Capsule: Outside the cell wall is a thick slime layer, called a capsule. it is composed of polysaccharides and amino acids.

Cell Wall: All bacterial cells are protected by a strong, rigid cell wall which is inner to the capsule. They are therefore classified under plants. The cell wall consists mainly of peptidoglycan. Peptidoglycan is a polysaccharide consisting of sugars and amino acids

Plasma Membrane: The thin, elastic plasma membrane is situated just internal to the cell wall. The plasma membrane consists of both lipids and proteins and its function is to provide protection for the cell. It forms the boundary between the cell’s contents and the outside of the cell.

Cytoplasm: The cytoplasm refers to a complex and aqueous fluid that consists of vitamins, salts, enzymes, carbohydrates, soluble proteins, co-enzymes, lipids, minerals and nucleic acids. This is the region where all major cellular reactions take place including cell growth, metabolism, and replication.

 

You are viewing an excerpt of this Topic. Subscribe Now to get Full Access to ALL this Subject's Topics and Quizzes for this Term!

Click on the button "Subscribe Now" below for Full Access!

Subscribe Now

Note: If you have Already Subscribed and you are seeing this message, it means you are logged out. Please Log In using the Login Button Below to Carry on Studying!

avataravataravatar

Responses

Your email address will not be published. Required fields are marked *

error: Alert: Content selection is disabled!!