Interview

Class notes Biology

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Course
Biology

Institution
9th Grade

Discover the tiny world of cells! My document explains the differences between simple and complex cells (prokaryotes and eukaryotes), plus details about bacteria—how they're classified and what makes them unique. Perfect for anyone curious about biology!

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Uploaded on December 20, 2023
Number of pages 6
Written in 2022/2023
Type Interview
Company Unknown
Person Unknown

biology
cytology
genetics
bacteria
bacterial classification
properties of bacteria
classification of organisms
gram positive and gram negative bacteria

Institution Secondary school
Education 9th Grade
Course Biology
School year 1

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1

Characteristics of microorganisms

Prokaryotes:

Prokaryotes are a group of organisms that lack a cell nucleus or any other membrane-
bounded organelles.

Eukaryotes:

Eukaryotes is an organism whose cells contain complex structures enclosed within
membranes.

Difference between Prokaryotic and Eukaryotic cells:

Prokaryotic cells:

 They are unicellular organisms.
 These are small and simple cells.
 The genetic material of a prokaryotic cell is not enclosed in a nucleus.
 The genetic material is either in a loop or small rings of DNA.
 They are free-floating in the cell.
 They also have a cell wall, cell membrane, and cytoplasm but no membrane-bounded
organelles.

Example:

Bacteria

Eukaryotic cells:

 They can be unicellular or multicellular organisms.
 Big and complex cells.
 The genetic material of a eukaryotic cell is enclosed in a nucleus.
 They also contain a cell wall, cell membrane, cytoplasm, and other membrane-bounded
organelles.

Examples:

Animals and plants.

, 2

Bacteria

1. Unicellular, Microscopic organism.
2. Prokaryotes.
3. Singular is referred to as Bacterium.
4. Study of Bacteria Bacteriology.
5. Most bacteria are 0.2 um 100 um.

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