Maths
Biology
Chemistry
English Lang.
History
Energy transfers (a2 only)
Infection and response
Homeostasis and response
Responding to change (a2 only)
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
1l the quest for political stability: germany, 1871-1991
Inter-war germany
2d religious conflict and the church in england, c1529-c1570
1c the tudors: england, 1485-1603
The cold war
Medieval period: 1066 -1509
Britain & the wider world: 1745 -1901
2m wars and welfare: britain in transition, 1906-1957
1f industrialisation and the people: britain, c1783-1885
2j america: a nation divided, c1845-1877
2n revolution and dictatorship: russia, 1917-1953
The fight for female suffrage
World war one
Britain: 1509 -1745
Show all topics
Nekoma-study
@nekoma_evos
·
12 Followers
Follow
National 5 Biology Unit 1 Notes: Cell Division and Stem Cells
This unit covers the importance of cell division, types of nuclear division, stages of mitosis, chromosome complement, and stem cells in Nat 5 Biology. It explains key concepts in cell biology and their significance in multicellular organisms.
18/04/2023
846
Cell division is crucial for growth, repair, and reproduction in organisms. Before division, cells must replicate their DNA to ensure daughter cells contain identical genetic information.
There are two types of nuclear division:
Mitosis is the focus for National 5 Biology key areas. It produces two nuclei with identical chromosome numbers to the original mother cell.
Definition: Chromosomes are structures made of DNA and associated proteins.
Highlight: Before nuclear division, chromosomes replicate to form two identical chromatids.
Vocabulary: Chromatids - Identical copies of a chromosome joined at the centromere.
Stages of mitosis are crucial to understand in Nat 5 Biology Notes. The process ensures genetic continuity in cell division.
Example: During anaphase, separated chromatids are now referred to as individual chromosomes.
Highlight: Spindle fibers play a crucial role in moving chromosomes during mitosis.
Chromosome complement refers to the number of chromosomes in a cell. Diploid cells contain two sets of chromosomes.
Example: Human body cells have 46 chromosomes (23 pairs), making them diploid.
Stem cells are crucial in National 5 Biology Multicellular Organisms Summary Notes. They can create specialized cells through differentiation and replicate through self-renewal.
Types of stem cells:
Definition: Differentiation is the process where stem cells become specialized cells.
Highlight: Stem cells are important for replacing dead cells, tissue repair, and growth.
Nat 5 Biology Unit 2 notes cover specialized cells and unicellular organisms. Specialized cells perform specific functions but cannot replicate themselves, requiring stem cells for replacement.
Example: Red blood cells are specialized for oxygen transport.
Unicellular organisms, such as Amoeba and Euglena, have unique features adapted to their environment and lifestyle.
Vocabulary: Phagocytosis - The process by which cells engulf and digest particles or other cells.
Highlight: Euglena exhibits both plant and animal-like features, including chloroplasts for photosynthesis and a flagellum for movement.
National 5 Biology Unit 3 Summary Notes include information on specialized cells in multicellular organisms. These cells have unique structures adapted to their functions.
Highlight: The shape of red blood cells provides a large surface area to volume ratio, enhancing gas exchange efficiency.
Vocabulary: Dendrite - A branched extension of a neuron that receives signals from other cells.
This summary covers key concepts in cell biology, including mitosis stages nat 5 biology notes, stem cells bbc bitesize nat 5, and specialized cells, providing a comprehensive overview of Nat 5 Biology Unit 1 Notes.
23
623
10/11
The heart and blood vessels
The circulatory system- the heart and blood vessels. detailed diagram of the heart and functions of the blood vessels.
46
1252
10/11
GCSE AQA Biology Organisation
These are notes for GCSE AQA biology along with the key questions for both organisation and infection & response. Hope it helps :)
15
555
10/11
GCSE biology - Arteries, capillaries, and veins
Structure and functions of the blood vessels in the circulatory system.
4
83
10/11
The Circulatory System
a summary of the circulatory system
7
391
10/11
Biology B4
main topic - organising animals and plants
5
78
10/11
Gas exchange in humans- blood vessels
Includes functions and adaptations of blood vessels, and diagram of heart to show the route of blood
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
Nekoma-study
@nekoma_evos
·
12 Followers
Follow
National 5 Biology Unit 1 Notes: Cell Division and Stem Cells
This unit covers the importance of cell division, types of nuclear division, stages of mitosis, chromosome complement, and stem cells in Nat 5 Biology. It explains key concepts in cell biology and their significance in multicellular organisms.
Cell division is crucial for growth, repair, and reproduction in organisms. Before division, cells must replicate their DNA to ensure daughter cells contain identical genetic information.
There are two types of nuclear division:
Mitosis is the focus for National 5 Biology key areas. It produces two nuclei with identical chromosome numbers to the original mother cell.
Definition: Chromosomes are structures made of DNA and associated proteins.
Highlight: Before nuclear division, chromosomes replicate to form two identical chromatids.
Vocabulary: Chromatids - Identical copies of a chromosome joined at the centromere.
Stages of mitosis are crucial to understand in Nat 5 Biology Notes. The process ensures genetic continuity in cell division.
Example: During anaphase, separated chromatids are now referred to as individual chromosomes.
Highlight: Spindle fibers play a crucial role in moving chromosomes during mitosis.
Chromosome complement refers to the number of chromosomes in a cell. Diploid cells contain two sets of chromosomes.
Example: Human body cells have 46 chromosomes (23 pairs), making them diploid.
Stem cells are crucial in National 5 Biology Multicellular Organisms Summary Notes. They can create specialized cells through differentiation and replicate through self-renewal.
Types of stem cells:
Definition: Differentiation is the process where stem cells become specialized cells.
Highlight: Stem cells are important for replacing dead cells, tissue repair, and growth.
Nat 5 Biology Unit 2 notes cover specialized cells and unicellular organisms. Specialized cells perform specific functions but cannot replicate themselves, requiring stem cells for replacement.
Example: Red blood cells are specialized for oxygen transport.
Unicellular organisms, such as Amoeba and Euglena, have unique features adapted to their environment and lifestyle.
Vocabulary: Phagocytosis - The process by which cells engulf and digest particles or other cells.
Highlight: Euglena exhibits both plant and animal-like features, including chloroplasts for photosynthesis and a flagellum for movement.
National 5 Biology Unit 3 Summary Notes include information on specialized cells in multicellular organisms. These cells have unique structures adapted to their functions.
Highlight: The shape of red blood cells provides a large surface area to volume ratio, enhancing gas exchange efficiency.
Vocabulary: Dendrite - A branched extension of a neuron that receives signals from other cells.
This summary covers key concepts in cell biology, including mitosis stages nat 5 biology notes, stem cells bbc bitesize nat 5, and specialized cells, providing a comprehensive overview of Nat 5 Biology Unit 1 Notes.
Biology - The heart and blood vessels
The circulatory system- the heart and blood vessels. detailed diagram of the heart and functions of the blood vessels.
23
623
0
Biology - GCSE AQA Biology Organisation
These are notes for GCSE AQA biology along with the key questions for both organisation and infection & response. Hope it helps :)
46
1252
0
Biology - GCSE biology - Arteries, capillaries, and veins
Structure and functions of the blood vessels in the circulatory system.
15
555
0
Biology - The Circulatory System
a summary of the circulatory system
4
83
0
Biology - Biology B4
main topic - organising animals and plants
7
391
0
Biology - Gas exchange in humans- blood vessels
Includes functions and adaptations of blood vessels, and diagram of heart to show the route of blood
5
78
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
