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  - Nuclear Chemistry
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  - Polymer Chemistry
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  - Theoretical Chemistry
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    - Reaction Dynamics 81
    - Electronic Structure 100
    - Molecular Dynamics 19
    - Spectroscopy Theory 5
  - Medicinal Chemistry
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  - Green Chemistry
    - Sustainable Design 4
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    - Waste Prevention 5
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    - Catalysis 4
    - Biodegradable Materials 5
    - Green Synthesis 5
    - Solvent Reduction 5
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  - Materials Chemistry
    - Crystal Structure 6
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    - Composites 8
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- Biology
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    - Cell Membrane 25
    - Cell Wall 5
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    - Nucleus 5
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    - Cell Division 32
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    - Transport Mechanisms 28
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  - Genetics
    - DNA Structure 5
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    - Transcription 5
    - Translation 5
    - Mutation 4
    - Mendelian Inheritance 5
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    - Genetic Disorders 7
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    - Genomics 5
    - Epigenetics 5
  - Evolution
    - Origin of Life 9
    - Theories of Evolution 5
    - Natural Selection 6
    - Variation 5
    - Adaptation 5
    - Speciation 5
    - Fossil Record 5
    - Comparative Anatomy 12
    - Molecular Evidence 8
    - Human Evolution 5
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    - Extinction 5
  - Ecology
    - Ecosystem 36
    - Biomes 25
    - Population Ecology 12
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    - Food Chains 16
    - Food Webs 5
    - Ecological Energy Flow 5
    - Nutrient Cycles 13
    - Biodiversity 28
    - Ecological Conservation 47
    - Habitat 5
    - Succession 5
    - Ecological Adaptation 11
    - Human Impact 5
    - Ecological Climate Change 5
  - Human Anatomy & Physiology
    - Skeletal System 117
    - Muscular System 70
    - Nervous System 124
    - Endocrine System 78
    - Circulatory System 90
    - Respiratory System 44
    - Digestive System 47
    - Excretory System 10
    - Reproductive System 120
    - Immune System 11
    - Integumentary System 21
    - Sensory Organs 56
  - Botany Plant Biology
    - Plant Anatomy 38
    - Plant Morphology 5
    - Plant Physiology 68
    - Photosynthesis 53
    - Plant Reproduction 22
    - Plant Growth 5
    - Plant Hormones 5
    - Plant Taxonomy 43
    - Plant Ecology 19
    - Plant Pathology 6
    - Economic Botany 5
    - Seed Biology 5
    - Plant Genetics 6
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  - Zoology Animal Biology
    - Classification 38
    - Porifera 6
    - Cnidaria 6
    - 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 2
    - Physiology 27
    - Reproduction 26
    - Development 6
    - Behavior 63
  - Microbiology
    - Microbial Structure 5
    - Bacteriology 33
    - Virology 34
    - Mycology 16
    - Parasitology 59
    - Microbial Genetics 5
    - Microbial Physiology 5
    - Microbial Ecology 11
    - Pathogenic Microbiology 18
    - Microbial Biotechnology 5
    - Food Microbiology 5
    - Industrial Microbiology 5
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  - Biotechnology
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    - 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
    - Bio Hormones 32
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  - Immunology
    - Innate Immunity 5
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    - Antigens 6
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    - Lymphatic System 7
    - B Cells 5
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    - Immune Response 3
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    - Vaccination 6
    - Immunodeficiency 5
    - Hypersensitivity 5
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    - Transplant Immunology 5
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  - Developmental Biology
    - Gametogenesis 5
    - Fertilization 9
    - Cleavage 6
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    - Organogenesis 5
    - Metamorphosis 6
    - Regeneration 5
    - Growth 4
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- Earth & Space Science
  - Geology
    - Minerals 32
    - Rocks 27
    - Geological Rock Cycle 17
    - Plate Tectonics 43
    - Geological Volcanoes 25
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    - Soil 5
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  - Oceanography
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Exams & Certifications

12th Grade Biology Quizzes, Questions & Answers

Recent Biology Quizzes

Brain: Test Your Knowledge On Cerebral Cortex! Quiz

Questions: 20 | Attempts: 7232 | Last updated: Mar 22, 2025

Sample Question
MATCH THE CORRECT TERM WITH THE CORRECT ANATOMICAL LOCATION.SPINAL CORD

A

B

C

D

F

G

Food Science Midterm Examination

Questions: 100 | Attempts: 156 | Last updated: Feb 2, 2025

Sample Question
The MOST reliable way to find a pH level is with _______________.

A ph meter

Litmus paper

Anthocyanins

A pH scale

Biology 100 Test 1

Questions: 25 | Attempts: 2014 | Last updated: Dec 12, 2025

Sample Question
While walking around campus, you notice that hummingbirds often visit red flowers. You wonder why hummingbirds often visit red flowers. You think that perhaps hummingbirds prefer red flowers to flowers of other colors. You conduct an experiment in which you give hummingbirds the choice of visiting a red flower, a white flower, and yellow flower must differ only in color for this experiment to work. In the scenario above, which represents a prediction?

Hummingbirds prefer red flowers to flowers of other colors.

Hummingbirds often visit red flowers.

If hummingbirds prefer red flowers, then they will choose to visit a red flower over a white flower or a yellow flower.

Why do hummingbirds often visit red flowers.

Manicure and Pedicure - Qp1

Questions: 15 | Attempts: 589 | Last updated: Mar 16, 2025

Sample Question
Human skin is a waterproof fabric that serves as a first line of defence against injury or invasion by hostile organisms. This protective ability is due to the presence of a substance called .

Keratin

Melanin

Epidermis

Biology Questions: Chapter 13 Organisms and Populations

Questions: 15 | Attempts: 1427 | Last updated: Mar 21, 2025

Sample Question
Sunken stomata are found in:

Hydrophytes

Xerophytes

Mesophytes

Halophytes

Beauty Therapist - Qp11

Questions: 8 | Attempts: 210 | Last updated: Aug 22, 2025

Sample Question
The minerals in the human body weigh about ______.

9 - 10 kg

9 - 11 kg

9 - 12 kg

Biology EOC Practice Questions - Bank 1

Questions: 37 | Attempts: 874 | Last updated: Sep 1, 2025

Sample Question
Which of the following is not an example of a scientific model?

A diagram of a plant cell

A Styrofoam solar system made by a 6th-grade science student

A 3-D computer image of an atom

A data table from a plant-growth experiment

Diet and Nutrition Advanced - Qp3

Questions: 10 | Attempts: 202 | Last updated: Mar 20, 2025

Sample Question
Symptoms of both protozoa and worms include: (Select three)

Bloating and flatulence

Weight gain

Abdominal cramps

Mild diarrhoea

Biology Practice Test: MCQ Quiz

Questions: 24 | Attempts: 260 | Last updated: Mar 22, 2025

Sample Question
What would happen if there was a mutation to Complex I and Complex II of the electron transport chain of cellular respiration so that it could not oxidize NADH?

The proton gradient would not form because the electrons from NADH could not be obtained. No ATP synthesis would occur.

The proton gradient would be created more rapidly since NADH would donate its electrons more readily. ATP synthesis would increase.

The electrons would still pass from Complex III and Complex IV to create a smaller proton gradient. Not as much ATP could be made.

The protons from the matrix would have to diffuse through the membrane to maintain the proton gradient needed for ATP synthase.

Electrons from the proton gradient would be donated to Complex I so that it could function normally.

Bio 1 Midterm Exam

Questions: 50 | Attempts: 350 | Last updated: Jun 17, 2025

Sample Question
Which type of transport is shown in the diagram?

Passive transport

Active transport

Osmosis

Endocytosis

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