Maths
Biology
Chemistry
English Lang.
History
Responding to change (a2 only)
Infection and response
Energy transfers (a2 only)
Homeostasis and response
Cell biology
Biological molecules
Organisation
Substance exchange
The control of gene expression (a2 only)
Bioenergetics
Genetic information & variation
Inheritance, variation and evolution
Genetics & ecosystems (a2 only)
Ecology
Cells
Show all topics
World war two & the holocaust
2d religious conflict and the church in england, c1529-c1570
1c the tudors: england, 1485-1603
Inter-war germany
The fight for female suffrage
Britain & the wider world: 1745 -1901
Medieval period: 1066 -1509
1f industrialisation and the people: britain, c1783-1885
1l the quest for political stability: germany, 1871-1991
2m wars and welfare: britain in transition, 1906-1957
The cold war
2n revolution and dictatorship: russia, 1917-1953
1d stuart britain and the crisis of monarchy, 1603-1702
World war one
Britain: 1509 -1745
Show all topics
roses
@roses4
·
0 Follower
Follow
Prokaryotes are single-celled organisms without a nucleus, classified into Archaebacteria and Eubacteria. Their cellular structure includes a cell wall, cell membrane, cytoplasm, nucleoid, plasmids, ribosomes, and various external structures. These organisms play crucial roles in diverse environments and have unique adaptations for survival.
26/04/2023
182
This page delves deeper into the prokaryotic cell structure and components and functions, providing more detail on each cellular component.
Definition: Horizontal gene transfer is the movement of genetic material between organisms other than by vertical transmission from parent to offspring.
Example: Horizontal gene transfer in prokaryotes can occur through plasmid exchange, allowing bacteria to acquire new traits such as antibiotic resistance.
This page continues the discussion of prokaryotic cell structure and function, focusing on the cell membrane, cell wall, and external structures.
Vocabulary: Peptidoglycan - A polymer consisting of sugars and amino acids that forms a mesh-like layer outside the plasma membrane of bacterial cells.
Highlight: The cell wall is a crucial difference between archaebacteria and eubacteria. While both have cell walls, the composition differs significantly.
This page completes the overview of prokaryotic cell structure and components, focusing on external structures that aid in movement and attachment.
Example: Horizontal gene transfer in bacteria can occur through conjugation, where genetic material is transferred from one bacterium to another via sex pili.
Highlight: The presence and arrangement of flagella can vary among prokaryotes and is often used as a characteristic for classification.
This page provides a brief comparison between prokaryotic and eukaryotic cells, highlighting key differences in their structure and organization.
While prokaryotes lack a true nucleus and membrane-bound organelles, eukaryotes possess both. This fundamental difference leads to several other distinctions:
Definition: Eukaryotic cell diagram would show a nucleus, membrane-bound organelles, and a more complex internal structure compared to a prokaryotic cell diagram.
Highlight: Understanding the differences between archaebacteria and eubacteria as well as the distinctions between prokaryotes and eukaryotes is crucial for comprehending the diversity of life on Earth.
This page provides an overview of prokaryotic cell structure and components, focusing on their basic characteristics and classification.
Prokaryotes are defined as organisms whose cells lack a nucleus. They are classified into two main domains:
The prokaryotic cell structure and components diagram illustrates key features:
Vocabulary: Genophore - The circular DNA strand found in prokaryotes.
Highlight: The term 'prokaryote' comes from Greek, where 'pro' means before and 'karyon' means nucleus, reflecting their lack of a true nucleus.
5
20
10
prokaryotic & eukaryotic cells
labelled cells and key points
2
178
10/11
Cells - The building Blocks of Life
plant & animal cells, diffusion, unicellular organisms, organisation of cells, reproduction in humans, menstrual cycle, gestation, reproduction in plants, dispersal, importance of plant reproduction
200
3618
10/11
Cells and Microscopy (GCSE)
GCSE course - cells and their organelle’s function, light microscopes, electron microscopes, magnification, resolution, cheek cell practical, units of measurement etc.
28
897
12/13
Microscopy mindmap
OCR A A-level biology mindmap, cell structure, microscopes, scanning electron microscopes (SEMs), laser scanning confocal microscopes, magnification and resolution, optical / light microscopes, electron microscopes, transmission electron microscopes(TEMs)
2
97
12
Bio notes
Biology notes
25
515
10/11
cells GCSE COMBINED SCIENCE AQA
cells overview
Average app rating
Pupils love Knowunity
In education app charts in 12 countries
Students have uploaded notes
iOS User
Philip, iOS User
Lena, iOS user
roses
@roses4
·
0 Follower
Follow
Prokaryotes are single-celled organisms without a nucleus, classified into Archaebacteria and Eubacteria. Their cellular structure includes a cell wall, cell membrane, cytoplasm, nucleoid, plasmids, ribosomes, and various external structures. These organisms play crucial roles in diverse environments and have unique adaptations for survival.
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
This page delves deeper into the prokaryotic cell structure and components and functions, providing more detail on each cellular component.
Definition: Horizontal gene transfer is the movement of genetic material between organisms other than by vertical transmission from parent to offspring.
Example: Horizontal gene transfer in prokaryotes can occur through plasmid exchange, allowing bacteria to acquire new traits such as antibiotic resistance.
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
This page continues the discussion of prokaryotic cell structure and function, focusing on the cell membrane, cell wall, and external structures.
Vocabulary: Peptidoglycan - A polymer consisting of sugars and amino acids that forms a mesh-like layer outside the plasma membrane of bacterial cells.
Highlight: The cell wall is a crucial difference between archaebacteria and eubacteria. While both have cell walls, the composition differs significantly.
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
This page completes the overview of prokaryotic cell structure and components, focusing on external structures that aid in movement and attachment.
Example: Horizontal gene transfer in bacteria can occur through conjugation, where genetic material is transferred from one bacterium to another via sex pili.
Highlight: The presence and arrangement of flagella can vary among prokaryotes and is often used as a characteristic for classification.
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
This page provides a brief comparison between prokaryotic and eukaryotic cells, highlighting key differences in their structure and organization.
While prokaryotes lack a true nucleus and membrane-bound organelles, eukaryotes possess both. This fundamental difference leads to several other distinctions:
Definition: Eukaryotic cell diagram would show a nucleus, membrane-bound organelles, and a more complex internal structure compared to a prokaryotic cell diagram.
Highlight: Understanding the differences between archaebacteria and eubacteria as well as the distinctions between prokaryotes and eukaryotes is crucial for comprehending the diversity of life on Earth.
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
This page provides an overview of prokaryotic cell structure and components, focusing on their basic characteristics and classification.
Prokaryotes are defined as organisms whose cells lack a nucleus. They are classified into two main domains:
The prokaryotic cell structure and components diagram illustrates key features:
Vocabulary: Genophore - The circular DNA strand found in prokaryotes.
Highlight: The term 'prokaryote' comes from Greek, where 'pro' means before and 'karyon' means nucleus, reflecting their lack of a true nucleus.
Biology - prokaryotic & eukaryotic cells
labelled cells and key points
5
20
0
Biology - Cells - The building Blocks of Life
plant & animal cells, diffusion, unicellular organisms, organisation of cells, reproduction in humans, menstrual cycle, gestation, reproduction in plants, dispersal, importance of plant reproduction
2
178
0
13
Biology - Cells and Microscopy (GCSE)
GCSE course - cells and their organelle’s function, light microscopes, electron microscopes, magnification, resolution, cheek cell practical, units of measurement etc.
200
3618
0
Biology - Microscopy mindmap
OCR A A-level biology mindmap, cell structure, microscopes, scanning electron microscopes (SEMs), laser scanning confocal microscopes, magnification and resolution, optical / light microscopes, electron microscopes, transmission electron microscopes(TEMs)
28
897
0
Biology - Bio notes
Biology notes
2
97
0
Biology - cells GCSE COMBINED SCIENCE AQA
cells overview
25
515
0
Average app rating
Pupils love Knowunity
In education app charts in 12 countries
Students have uploaded notes
iOS User
Philip, iOS User
Lena, iOS user
