Eduqas A Level Biology mitosis and meiosis revision guide: Key concepts and processes of cell division explained for students. Covers chromosome structure, ploidy, cell cycle stages, and detailed steps of mitosis.
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Eduqas A Level Biology Mitosis Meiosis 2021 Revision Questions and Answers
Molly Gowar
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09/07/2022
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Page 2: Homologous Chromosomes and Cell Cycle
This page delves into homologous chromosomes, ploidy levels, and introduces the cell cycle for Eduqas A Level Biology students.
Key concepts covered:
- Homologous pairs of chromosomes
- Diploid and haploid cells
- Ploidy levels and polyploidy
- Definition of mitosis
- Overview of the cell cycle
- Main stages of the cell cycle
Definition: Diploid refers to having two complete sets of chromosomes, symbolized as 2n. In humans, the diploid number is 2n = 46.
Highlight: Homologous chromosomes are matching pairs that are identical in size and shape, carrying genes for the same characteristics but potentially different alleles.
Vocabulary: Ploidy level - the number of complete sets of chromosomes in an organism.
Example: Human body cells are diploid (2n), while gametes are haploid (n).
Page 3: Mitosis and Its Stages
This page focuses on the process of mitosis and its stages, crucial for Eduqas A Level Biology students studying cell division.
Key points covered:
- Detailed explanation of interphase
- Five stages of mitosis
- Description of prophase and metaphase
Definition: Mitosis is a type of cell division producing two genetically identical daughter cells.
Highlight: Interphase is the longest phase of the cell cycle, involving significant metabolic activity and DNA replication.
Vocabulary: S phase - the part of interphase where DNA replication occurs (synthesis phase).
Example: During prophase, chromosomes condense and become visible, while the nuclear envelope disintegrates and the spindle forms.
Page 1: Chromosome Structure and Basic Concepts
This page introduces fundamental concepts related to chromosomes and cell division in Eduqas A Level Biology.
Key points covered:
- Definition and structure of chromosomes
- Relationship between chromosomes and DNA
- Genes as sections of DNA coding for specific polypeptides
- Visibility of chromosomes during cell division
- Chromatids and centromeres
- Species variation in chromosome numbers
- Human chromosome count (46)
- Definition of haploid cells
Definition: A chromosome is a long, thin structure of DNA and protein in the nucleus of eukaryotic cells, carrying genes.
Vocabulary: Chromatid - one of two identical copies of a chromosome, joined at the centromere, prior to cell division.
Highlight: Chromosomes only become visible when chromatin condenses prior to cell division, after DNA replication.
Example: Humans have 46 chromosomes in their body cells, but this number varies among different species.
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Knowunity is the #1 education app in five European countries
Knowunity has been named a featured story on Apple and has regularly topped the app store charts in the education category in Germany, Italy, Poland, Switzerland, and the United Kingdom. Join Knowunity today and help millions of students around the world.
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Philip, iOS User
The app is very simple and well designed. So far I have always found everything I was looking for :D
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Molly Gowar
@mollygowar
·
123 Followers
Follow
Eduqas A Level Biology Mitosis Meiosis 2021 Revision Questions and Answers
Eduqas A Level Biology mitosis and meiosis revision guide: Key concepts and processes of cell division explained for students. Covers chromosome structure, ploidy, cell cycle stages, and detailed steps of mitosis.
09/07/2022
696
Page 2: Homologous Chromosomes and Cell Cycle
This page delves into homologous chromosomes, ploidy levels, and introduces the cell cycle for Eduqas A Level Biology students.
Key concepts covered:
- Homologous pairs of chromosomes
- Diploid and haploid cells
- Ploidy levels and polyploidy
- Definition of mitosis
- Overview of the cell cycle
- Main stages of the cell cycle
Definition: Diploid refers to having two complete sets of chromosomes, symbolized as 2n. In humans, the diploid number is 2n = 46.
Highlight: Homologous chromosomes are matching pairs that are identical in size and shape, carrying genes for the same characteristics but potentially different alleles.
Vocabulary: Ploidy level - the number of complete sets of chromosomes in an organism.
Example: Human body cells are diploid (2n), while gametes are haploid (n).
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Page 3: Mitosis and Its Stages
This page focuses on the process of mitosis and its stages, crucial for Eduqas A Level Biology students studying cell division.
Key points covered:
- Detailed explanation of interphase
- Five stages of mitosis
- Description of prophase and metaphase
Definition: Mitosis is a type of cell division producing two genetically identical daughter cells.
Highlight: Interphase is the longest phase of the cell cycle, involving significant metabolic activity and DNA replication.
Vocabulary: S phase - the part of interphase where DNA replication occurs (synthesis phase).
Example: During prophase, chromosomes condense and become visible, while the nuclear envelope disintegrates and the spindle forms.
Register
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Join milions of students
Improve your grades
By signing up you accept Terms of Service and Privacy Policy
Page 1: Chromosome Structure and Basic Concepts
This page introduces fundamental concepts related to chromosomes and cell division in Eduqas A Level Biology.
Key points covered:
- Definition and structure of chromosomes
- Relationship between chromosomes and DNA
- Genes as sections of DNA coding for specific polypeptides
- Visibility of chromosomes during cell division
- Chromatids and centromeres
- Species variation in chromosome numbers
- Human chromosome count (46)
- Definition of haploid cells
Definition: A chromosome is a long, thin structure of DNA and protein in the nucleus of eukaryotic cells, carrying genes.
Vocabulary: Chromatid - one of two identical copies of a chromosome, joined at the centromere, prior to cell division.
Highlight: Chromosomes only become visible when chromatin condenses prior to cell division, after DNA replication.
Example: Humans have 46 chromosomes in their body cells, but this number varies among different species.
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Register
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By signing up you accept Terms of Service and Privacy Policy
Register
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Access to all documents
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Access to all documents
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Register
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Can't find what you're looking for? Explore other subjects.
Knowunity is the #1 education app in five European countries
Knowunity has been named a featured story on Apple and has regularly topped the app store charts in the education category in Germany, Italy, Poland, Switzerland, and the United Kingdom. Join Knowunity today and help millions of students around the world.
4.9+
Average app rating
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Pupils love Knowunity
#1
In education app charts in 12 countries
950 K+
Students have uploaded notes
Still not convinced? See what other students are saying...
iOS User
I love this app so much, I also use it daily. I recommend Knowunity to everyone!!! I went from a D to an A with it :D
Philip, iOS User
The app is very simple and well designed. So far I have always found everything I was looking for :D
Lena, iOS user