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Unit 2 of 2

Variation, Homeostasis and Micro-organisms

WJEC GCSE Science (Double Award) — Biology · 51 lessons · 32 quizzes

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2.1

Unit 2 overview: Variation, Homeostasis and Micro-organisms20 min

2.1.1

Classification of Organisms20 min

2.1.2

Morphological and Behavioural Adaptations20 min

2.1.3

Interactions Between Population and Environment20 min

2.1.4

Biodiversity20 min

2.1.5

Sampling for Abundance and Distribution20 min

2.1.6

Capture-recapture Techniques20 min

2.1.7

Investigating Species Distribution and Abundance20 min

2.1.8

Biological Control Agents20 min

2.2.1

Chromosomes20 min

2.2.2

Types of Cell Division20 min

2.2.3

Uncontrolled Mitosis and Cancer20 min

2.2.4

Stem Cells20 min

2.3.1

DNA Structure20 min

2.3.2

Role of the Triplet Code20 min

2.3.3

Process of Genetic Profiling20 min

2.3.4

Uses of Genetic Profiling20 min

2.3.5

DNA Profiling20 min

2.3.6

Genes, Alleles and Other Key Terms in Genetics20 min

2.3.7

Single Gene Inheritance20 min

2.3.8

Polygenic Inheritance20 min

2.3.9

Sex Determination20 min

2.3.10

Artificial Gene Transfer20 min

2.4.1

Variation in Organisms20 min

2.4.2

Types of Variation20 min

2.4.3

Sexual Reproduction20 min

2.4.4

Mutations20 min

2.4.5

Natural Selection and Evolution20 min

2.4.6

Evolution in Action20 min

2.4.7

Understanding the Human Genome20 min

2.5.1

Sense Organs20 min

2.5.2

The Nervous System20 min

2.5.3

2.5.4

Investigating Factors Affecting Reaction Time20 min

2.5.5

Homeostasis20 min

2.5.6

Hormones as Chemical Messengers20 min

2.5.7

Maintaining Blood Glucose Levels20 min

2.5.8

2.5.9

Temperature Regulation20 min

2.5.10

Negative Feedback Mechanisms20 min

2.5.11

Lifestyle Choices and Medical Conditions20 min

2.6.1

Types of Micro-organisms20 min

2.6.2

Pathogens20 min

2.6.3

Mechanisms of Defence20 min

2.6.4

2.6.5

Do Vaccines Protect you from Disease20 min

2.6.6

How do Vaccines Work20 min

2.6.7

Memory Cells and Immune Response20 min

2.6.8

Antibiotics and Disease20 min

2.6.9

Preventing Medical Conditions20 min

2.6.10

New Medicines20 min

Practice for this unit

2.1.4 Biodiversity - MCQ practice (9 questions)

Marked questions with instant feedback and a full review.

2.2.1 Chromosomes - MCQ practice (16 questions)

Marked questions with instant feedback and a full review.

2.2.2 Types of Cell Division - MCQ practice (48 questions)

Marked questions with instant feedback and a full review.

2.3.1 DNA Structure - MCQ practice (16 questions)

Marked questions with instant feedback and a full review.

2.3.2 Role of the Triplet Code - MCQ practice (16 questions)

Marked questions with instant feedback and a full review.

2.3.7 Single Gene Inheritance - MCQ practice (50 questions)

Marked questions with instant feedback and a full review.

2.3.7 Single Gene Inheritance - MCQ practice part 2 (2 questions)

Marked questions with instant feedback and a full review.

2.3.9 Sex Determination - MCQ practice (16 questions)

Marked questions with instant feedback and a full review.

2.4.1 Variation in Organisms - MCQ practice (8 questions)

Marked questions with instant feedback and a full review.

2.4.2 Types of Variation - MCQ practice (7 questions)

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2.4.3 Sexual Reproduction - MCQ practice (9 questions)

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2.4.5 Natural Selection and Evolution - MCQ practice (7 questions)

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2.4.6 Evolution in Action - MCQ practice (6 questions)

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2.4.7 Understanding the Human Genome - MCQ practice (16 questions)

Marked questions with instant feedback and a full review.

2.5.1 Sense Organs - MCQ practice (50 questions)

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2.5.1 Sense Organs - MCQ practice part 2 (1 questions)

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2.5.2 The Nervous System - MCQ practice (8 questions)

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2.5.3 Reflexes - MCQ practice (23 questions)

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2.5.5 Homeostasis - MCQ practice (7 questions)

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2.5.6 Hormones as Chemical Messengers - MCQ practice (23 questions)

Marked questions with instant feedback and a full review.

2.5.7 Maintaining Blood Glucose Levels - MCQ practice (7 questions)

Marked questions with instant feedback and a full review.

2.5.9 Temperature Regulation - MCQ practice (18 questions)

Marked questions with instant feedback and a full review.

2.5.10 Negative Feedback Mechanisms - MCQ practice (6 questions)

Marked questions with instant feedback and a full review.

2.6.1 Types of Micro-organisms - MCQ practice (2 questions)

Marked questions with instant feedback and a full review.

2.6.2 Pathogens - MCQ practice (2 questions)

Marked questions with instant feedback and a full review.

2.6.3 Mechanisms of Defence - MCQ practice (5 questions)

Marked questions with instant feedback and a full review.

2.6.4 Antigens - MCQ practice (7 questions)

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2.6.5 Do Vaccines Protect you from Disease- - MCQ practice (3 questions)

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2.6.6 How do Vaccines Work- - MCQ practice (2 questions)

Marked questions with instant feedback and a full review.

2.6.7 Memory Cells and Immune Response - MCQ practice (4 questions)

Marked questions with instant feedback and a full review.

2.6.8 Antibiotics and Disease - MCQ practice (5 questions)

Marked questions with instant feedback and a full review.

2.6.10 New Medicines - MCQ practice (4 questions)

Marked questions with instant feedback and a full review.