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- Biology
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    - Biodiversity 28
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    - Habitat 5
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    - Human Impact 5
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    - Nervous System 124
    - Endocrine System 78
    - Circulatory System 90
    - Respiratory System 44
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    - Excretory System 10
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    - Immune System 11
    - Integumentary System 21
    - Sensory Organs 56
  - Botany Plant Biology
    - Plant Anatomy 38
    - Plant Morphology 5
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    - Photosynthesis 53
    - Plant Reproduction 22
    - Plant Growth 5
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    - Plant Taxonomy 43
    - Plant Ecology 19
    - Plant Pathology 6
    - Economic Botany 5
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  - Zoology Animal Biology
    - Classification 38
    - Porifera 6
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    - Platyhelminthes 5
    - Nematoda 6
    - Annelida 7
    - Arthropoda 12
    - Mollusca 5
    - Echinodermata 6
    - Chordata 5
    - Fish 76
    - Amphibians 10
    - Reptiles 14
    - Birds 5
    - Mammals 106
    - Anatomy 36
    - Physiology 40
    - Reproduction 26
    - Development 6
    - Behavior 64
  - Microbiology
    - Microbial Structure 5
    - Bacteriology 33
    - Virology 34
    - Mycology 16
    - Parasitology 59
    - Microbial Genetics 5
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    - Microbial Ecology 11
    - Pathogenic Microbiology 18
    - Microbial Biotechnology 5
    - Food Microbiology 6
    - Industrial Microbiology 5
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  - Biotechnology
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    - Recombinant DNA 5
    - Cloning 5
    - PCR 5
    - Gel Electrophoresis 5
    - DNA Sequencing 5
    - Gene Therapy 5
    - CRISPR 5
    - Stem Cells 5
    - Bioreactors 5
    - Fermentation 5
    - Bioinformatics 6
    - GMOs 5
    - Proteomics 5
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  - Molecular Biology
    - Biological Biomolecules 8
    - Carbohydrates 6
    - Biochemical Lipids 9
    - Bio Proteins 5
    - Bio Enzymes 21
    - Bio Nucleic Acids 5
    - Biochemical Vitamins 5
    - Bio Minerals 6
    - Bio Metabolism 60
    - Cellular Respiration 22
    - Nitrogen Metabolism 5
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    - Signal Transduction 5
  - Immunology
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    - Antigens 6
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    - Lymphatic System 6
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    - Immune Response 3
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  - Developmental Biology
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    - Fertilization 9
    - Cleavage 6
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    - Organogenesis 5
    - Metamorphosis 6
    - Regeneration 5
    - Growth 4
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- Earth & Space Science
  - Geology
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    - Rocks 27
    - Geological Rock Cycle 17
    - Plate Tectonics 43
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    - Soil 5
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Exams & Certifications

Biology Quizzes, Questions & Answers

Recent Biology Quizzes

This assessment explores key concepts of the respiratory and circulatory systems, including the functions of the nose, larynx, and blood vessels. It evaluates your understanding of how these systems work together to transport...

Questions: 15 | Attempts: 12 | Last updated: Jun 23, 2026

Sample Question
What is the primary function of the nose in the respiratory system?

To produce sound

To filter, warm, and moisten air entering the lungs

To carry oxygen to the blood

To control breathing rate

Biotechnology, Bioremediation & Blood Typing

This quiz focuses on biotechnology, bioremediation, and blood typing, evaluating your understanding of key concepts like recombinant DNA and biofertilizers. It is useful for learners looking to deepen their knowledge of how...

Questions: 10 | Attempts: 10 | Last updated: Jun 21, 2026

Sample Question
What is biotechnology?

The study of chemical reactions in laboratories

Technology that uses biological systems, living organisms, or parts of organisms to develop or create products

The use of machines to replace human labor in agriculture

A branch of physics that studies living cells

Philippine Wildlife Scientific Name Identification

This quiz focuses on identifying the scientific names of various Philippine wildlife species. It tests knowledge on birds, reptiles, and amphibians, enhancing understanding of biodiversity in the Philippines. This is useful for...

Questions: 30 | Attempts: 15 | Last updated: Jun 20, 2026

Sample Question
What is the scientific name of the Blue-tailed Bee-eater?

Merops philippinus

Merops orientalis

Merops viridis

Merops leschenaulti

Biology Fundamentals Quiz

This quiz assesses your understanding of fundamental biological concepts, including cell structure, plant processes, and human anatomy. By answering questions about organelles, photosynthesis, and body systems, learners can...

Questions: 20 | Attempts: 13 | Last updated: Jun 19, 2026

Sample Question
Which organelle is known as the powerhouse of the cell?

Nucleus

Mitochondria

Ribosome

Golgi Apparatus

SBI4U Biology Final Exam Master Review

This review focuses on key concepts in biology, including molecular bonds, enzyme functions, and metabolic pathways. It evaluates your understanding of essential topics like photosynthesis, DNA replication, and protein structure....

Questions: 30 | Attempts: 30 | Last updated: Jun 18, 2026

Sample Question
What type of bond is formed when two atoms share electrons?

Hydrogen bond

Ionic bond

Covalent bond

Ester bond

Digestion, Circulation & Respiration Systems

This assessment focuses on the digestion, circulation, and respiration systems in the human body. It evaluates understanding of key processes such as nutrient absorption, blood flow, and respiratory mechanics. This knowledge is...

Questions: 31 | Attempts: 11 | Last updated: Jun 18, 2026

Sample Question
Which of the following best describes the primary function of carbohydrates in the body?

Building cell membranes

Providing quick energy and fuel for cellular processes

Carrying oxygen in the blood

Catalyzing chemical reactions

Evolution, Adaptation & Speciation

This assessment explores key concepts in evolution, adaptation, and speciation. It evaluates understanding of artificial selection, genetic drift, and evidence for evolution, including homologous structures and biochemical...

Questions: 20 | Attempts: 11 | Last updated: Jun 18, 2026

Sample Question
Which of the following best describes the process of artificial selection?

Humans allow random mating to occur in a population over time

Humans selectively breed organisms with desirable traits, using variation and inheritance over time

Nature selects organisms best suited to their environment

Mutations randomly accumulate in a population without human interference

Plant Vascular Tissue: Xylem and Phloem

This assessment focuses on vascular tissue in plants, specifically xylem and phloem. It evaluates understanding of their functions, structures, and locations within plants. This knowledge is essential for anyone studying plant...

Questions: 30 | Attempts: 13 | Last updated: Jun 18, 2026

Sample Question
What is the primary function of vascular tissue in plants?

Photosynthesis

Transporting water, minerals, and food throughout the plant

Providing structural support only

Absorbing sunlight

Plant Dermal Tissue

This assessment focuses on plant dermal tissue, evaluating your understanding of its structure, function, and significance in protecting plants. Key concepts include the roles of the epidermis, periderm, and specialized...

Questions: 30 | Attempts: 11 | Last updated: Jun 18, 2026

Sample Question
What is the primary function of dermal tissue in plants?

Photosynthesis

Outermost protective layer

Water transport

Food storage

Reproductive Hormones and Biorhythm Regulation

This assessment focuses on reproductive hormones and their regulation in the human body. It evaluates your understanding of key concepts such as the roles of Leydig and Sertoli cells, hormonal interactions during the menstrual...

Questions: 20 | Attempts: 11 | Last updated: Jun 17, 2026

Sample Question
Which cells in the testes are responsible for synthesizing testosterone?

Sertoli cells

Leydig (interstitial) cells

Granulosa cells

Follicle cells

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