Summary Grade 11 to 12 Bacteria Summery, Life Sciences (biology), IEB Syllabus
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Course
Bacteria, Life Sciences
Institution
11th Grade
Attention all biology enthusiasts! Are you tired of drab, monotonous notes on bacteria? Look no further! My Grade 11 Bacteria Summary is the ultimate guide to understanding the intricate world of bacteria. With comprehensive explanations of the bacterial structure, reproduction methods, and metabol...
They can produce their own energy Words:
Are living Prokaryotes- single called organism and
Are Prokaryotes - meaning nucleic acid isn’t inclosed lacks nucleus
Have a membrane and a cell wall
They are classified due to their shape
They cover surfaces which have enough moisture
Recycle nutrient’s
Bacterial structure
Three main shapes: cocci {spherical}, bacilli {rod}, spirilli {spiral}
Unicellular and lack organelles
Have a signal chromosome {circular, double stranded DNA found in nucleoid}
DNA replication Location of the
Hair like bristles that allow bacterial chromosomes
attachment to surfaces
Carries extra DNA
Site of protein Rotating filament that
synthesis propels cell forward
{locomotion}
Gel-like
Allows attachment to surfaces
Protects cell from dehydration and
attachment by phagocytic cells
Makes it more resistant to human
immune responses
Semi-fluid solution surrounded
Structure that supplies protection, Contains nucleoid and ribosomes
support and shapes the cell Has a high concentration of dissolved solutes
Has high pressure - aids cell wall with shape and rigidity
Thin layer
Semi permeable - prevents diffusion to external environment, keeps substances in the cell
Sheet that surrounds cytoplasm and regulates entrance and exit of molecules
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