essay questions biology

Biology Essay Topics

100 best biology essay topics in 2023.

Sciences arise neither by themselves nor because someone invents them simply “out of interest.” Any science appears as a result of the need for humanity to solve certain problems that have arisen in the process of its development. Biology is not an exception, it also arose in connection with the solution of very important problems for people. The main tasks of modern biology are the study of the relationship between man and the environment, the diversity of living organisms and their interaction with each other, the study of the possibilities of prolonging human life, and the cure of various serious diseases. The list is endless.

That is why your biology essay is a great chance to figure out something curious about your environment or even yourself and gain a better understanding of the world. No wonder the choice of the topic may perplex you. That’s why we are here – after reading some hints on how to select the best biology essay topic and looking through various examples you will find the suitable one.

Tips on How to Select the Best Biology Essay Topic?

To begin with, biology is a complicated discipline and there surely are numerous aspects of it you are not aware of well. It is for this reason that you should pick a topic keeping your basic knowledge in mind. You can be interested in whatever you are but preparation for some topics may take an enormous amount of time and effort.

Next, while searching for a scope of specialization, remember that biology is ubiquitous. Just look around and you will find ready-made topics! You can write about the evolution of your pet species, the structure of your home plant, the process of fertilizing soil if you’re into gardening, or examine which processes were taking place in your body during last year’s flu. Use your imagination!

After all, if you still feel frustrated about what to write, your instructor can help you. It is a great idea to consult with your biology teacher because he is able to consider every aspect of your assignment – requirements, given time, your understanding of the subject, and most importantly, he knows how a successful topic should be composed. Such guidance will inspire you.

Who Curates Our List of Biology Essay Topics?

Our biology essay topics are curated by professionals who have extensive experience in writing different types of works. They are thoroughly selected and sorted to ease your topic decision. Above that, they are all checked for the availability of the materials on every question. Feel free to pick any topic you like!

20 Key Biology Essay Questions in 2023

• What are the key properties of life?
• What is a cell theory ?
• What are the domains and kingdoms of life?
• How is hereditary information transmitted to future generations?
• What is natural selection?
• Why is water necessary for life?
• How is a cell structured?
• What is metabolism?
• How does photosynthesis work?
• Mitosis and meiosis: how do cells divide?
• What is DNA?
• What is genetic drift?
• Why do biologists use phylogenetic trees?
• What is bacteria?
• What are archaea?
• How do fungi function?
• How do substances cycle in nature?
• What is the main breakthrough in biology in the XXI century?
• What is the structure of connective tissue?
• The experiments of Lazzaro Spallanzani and Louis Pasteur

20 Controversial Biology Essay Topics

• How did life on Earth emerge?
• Can plants feel pain?
• Do animals have consciousness?
• Biological breakthroughs are impossible without animal testing
• What regulates gene expression?
• Who are the modern relatives of dinosaurs?
• What is the last universal common ancestor (LUKA)?
• Where did eukaryotes originate from?
• Are viruses alive ?
• Development and manufacture of transgenic products
• Basic theories of human origins
• The process of cloning
• Why hasn’t the secret of brain functioning been discovered yet?
• What is the paradox of the plankton?
• Opposing concepts in cell theory
• A fetus can’t feel pain
• The status of nanobacterium
• How does vaccination work?
• Why is it legal to harvest embryonic stem cells?
• Genetic testing and ethical issues

20 Good Biology Essay Topics

• The earliest roots of biology
• The development of biology with the improvement of the microscope
• Sugar in the process of cell respiration
• Cell communication
• What are the main laws of inheritance?
• Biological features of animal migration
• Characterization of DNA biosynthesis
• Biogeocenosis as an important biological process
• Features of the practical application of algae
• Genetic engineering and its main issues
• Types of races: specifics of their origin
• Enzymes: functions and determination of their activity
• The evolutionary process of a flower
• Invertebrate symmetry
• Parasites: general characteristics, significance for humans
• Biogeochemical cycles and their disruption by humans
• Competition as the most important form of the struggle for existence
• Biological production of aquatic ecosystems and ways to increase it
• Features of the embryonic development of rodents
• The global carbon cycle and human-induced change

20 Human Biology Essay Topics

• The mouse as a model for human biology
• The secular trend in human physical growth
• Proteins: chemical composition, properties, and significance for the human body
• Anthropogenesis: essence and features
• The role of medicinal plants in human life
• Hereditary human diseases: prerequisites for the occurrence
• How do people age?
• Characteristics of human biorhythms
• The specificity of the development of immunity
• Vitamins: types and their role in the human body
• Circles of human blood circulation, the interdependence of the respiratory and cardiovascular systems
• The interaction of neurons in the nerve centers
• The main functions of the body system, their relationship
• The influence of smoking, alcohol, and drug abuse by parents on the embryonic development of a child
• Mechanisms for maintaining intracranial pressure
• Anatomical, physiological, and biochemical adaptation in the process of restructuring the body in connection with the disease
• Evolutionary gains and losses of a man
• Age characteristics of biological adaptation in humans
• Hormones, their function, and influence on human behavior
• Organ systems of the body and their brief characteristics

20 Best Biology Essay Ideas

• The development of a multicellular organism
• Characteristic features of the regeneration process
• Biological eras and their characteristics
• Guided natural selection and its implications for the evolution of species
• Mammals: features, structure, comparative anatomical analysis on the example of two representatives
• Genetic engineering techniques
• Catastrophe theory and the progress of living nature
• Biological aspects of pathogenesis in animals and plants
• Apomixis and its meaning
• Self-regulation in biology
• The principle of optimality in biology and the theory of transformation
• Reproduction and development of living systems
• Basics of organization and sustainability of the biosphere
• Panspermia theory
• Macro and microelements: their role in the structure of living matter
• What tasks are being solved at the molecular level?
• Forms of movement at the subcellular, cellular, and organism levels
• Symbiosis as a supraorganism system
• Reproduction forms: asexual, vegetative, and sexual

Writing Biology Essay Topics Too Stressful? Get Help From Essay Writer!

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MICROBIOLOGY

A list of 15 biology essay topics for college students.

College students who study biology sometimes are instructed to write essays. To achieve success in this task, first of all, you should pick a proper topic for your paper. However, for some college students it’s easier to get a topic from a teacher rather than coming up with a one on their own. You can ask " essayhub " and spend your free time as you wish, but if you want to write biology essay by yourself it’d be helpful for you to look at the list below.

1. Genes and obesity.

You may do your investigation and discover what types of genes are connected to obesity and what can be done to prevent future generations from growing fat.

2. Abortions and pregnancies.

In your biology essay, you may present your research and educate your readers about the effects that abortions have on future pregnancies.

3. Genes and homosexuality.

Investigate this topic thoroughly and discover whether there are genes that are connected to homosexuality and how they work.

4. Viruses as biological weapons.

This theme allows college students to investigate whether such viruses like Ebola can be used as biological weapons.

5. Alternative medicine.

Do your research and present your results on the effectiveness of alternative medicine approaches, like using herbs, for example.

6. Vaccination and autism.

There are studies that claim that particular vaccinations increase the risk of autism. Investigate this topic in your biology essay.

7. Birth control pills and their effects on women.

Do your research and educate your readers about the effects on health after regular using of birth control pills.

8. Causes of cancer.

Investigate in your paper what are the causes of cancer and how to reduce the risk of falling prey to this disease.

9. Human evolution.

Research this topic and write about the known facts of human evolution and reasons for humans to evolve in this particular direction.

10. The study on genetic diseases.

You may pick a particular genetic disease and do a thorough investigation about it in your paper.v

11. Meningitis.

This subject contains plenty of mysteries even nowadays. Write about what scientists know about it.

12. The usage of nanotechnology.

Write about the perspectives of using nanotechnologies in biology.

13. Dealing with phobias.

Investigate in your essay whether it’s possible to treat phobias by using surgical rather than psychology methods.

14. The study of hypnosis.

Try to look at hypnosis from a biological point of view and present your results in your paper.

15. Sleeping disorders.

Write about the functions and benefits of sleep. Describe how sleeping disorders affect the human organism and how they can be treated.

Good Biology Term Paper Topics To Consider

These topics are worth a look at:

The life cycle of butterflies. If you are passionate about nature and animals, this can be a really fun project for you to do. Your classmates might be surprised at how a butterfly is transformed and its short life.

Allergies.  There are many people who develop allergies to a certain ailment even if they ate it for years without any problem. On the other hand, there are people who are born with strange allergies, like an allergy to water or the sun.

Any of these and other topics are not so difficult to write an essay about. But if you understand that this task can be hard for you should get services from domyessay.com is the website that will write an essay for you https://domyessay.com/

The effect of radiation on plants. There are places in the world where the environment is so polluted because of radiation that all plants are completely changed.

The eruption of volcanoes. The advantage of this topic is that you can make a very interesting experiment; with a few rudimentary substances, you can create your own small volcano or write an essay and reveal the nature of volcanic eruptions. Also, there's nothing wrong with not knowing writing. To solve this problem ask to essay writers service .

Global warming. Even if the term is very commonly used, there is a big chance that most of your classmates don’t actually know what it means. It’s not their fault, the media is to be blamed for this. Not everything that’s being said on TV or in the newspaper is true, and global warming is one of those things that are often misunderstood. So, if you want to get a good grade for your essay on global warming, you first need to learn what it is.  But if you don't have time and experience in writing a good essay, use a proven paper writing service online Thanks to professional writers, you can easily write a quality essay without wasting time.

Fast-food and obesity. You can present a very useful paper about the toxicity of fast food and how this increased the obesity rate in the last years.

Phobias. There are people who are scared of the most ordinary things, like pickles or cars. Explain this from a scientific point of view.

Genetic diseases. What are the most common ones and what are the triggers? How can somebody find out if they have the risk to develop a genetic disease?

Sleeping. What happens in our bodies when we sleep? How much rest do we need every night and how is our body replacing damaged cells?

Eye color. Did you know that the color of your eyes is completely influenced by your genetic inheritance? Explain the connections.

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KCSE-MOCKS Biology essays Questions and Answers (66)

For the preparation of national and local exams, get all biology essays with answers here . These biology essay questions are aggregated from all the KCSE examinations. Unique essay questions are also from Form 4 Mock past papers. The biology essays cover all topics from form 1 to form 4.

This category contains all biology essay questions with answers to help with your high school exam revision. Study the most commonly asked biology essays in preparation for KCSE or MOCK examinations.

You can get access to the notes for free without having to pay a cent on the  EasyElimu Study App , which you can get from the Google Playstore here .

As a bonus, each KCSE-MOCKS biology essay question is fully answered. The answers are summarized but fully explained, so you won’t have to stress over writing that mwakenya, which makes passing that biology exam easy. Whether it’s form 1, 2, 3, or 4, term 1, 2, or 3, these free biology essay questions and answers pdf will give you that grade A.

Visit the EasyElimu App to get the answers to the KCSE-MOCKS Biology essays questions for free. Alternatively, click the blue links at the end  of this page to download, in PDF format, the specific KCSE-MOCKS Biology essays questions with answers

All the Key Biology Essay Questions

Explain the various ways in which a typical cell is adapted to its functions-kcse biology essays, explain how the various specialized cells are modified to carry out their functions in plants and animals - kcse biology essays, describe how the mammalian body protects itself against infections -kcse biology essays, how are the leaves of higher plants adapted to their functions - kcse biology essays, explain how the various teeth adapt mammals for nutrition - kcse biology essays, describe the process of urine formation in the mammalian kidneys - kcse biology essays, explain the role of the following hormones during homeostasis - kcse biology essays, distinguish between diabetes mellitus and diabetes insipidus - kcse biology essays, explain how the various abiotic factors may affect plants - kcse biology essays, discuss the causes, effects and control measures for water pollution - kcse biology essays, how are xerophytes and hydrophytes adapted to their habitats - kcse biology essays.

• Outline the differences between wind and insect pollinated flowers - KCSE Biology Essays
• Describe what happens in a flower from the time of pollination up to the time of seed and fruit development - KCSE Biology Essays
• Discuss the adaptations of the female reproductive system of humans - KCSE Biology Essays
• Describe the process of gaseous exchange in terrestrial plants - KCSE Biology Essays
• How is the mammalian gaseous exchange system adapted to its functions? - KCSE Biology Essays
• Describe the structure and function of the mammalian skin - KCSE Biology Essays
• Luteinising Hormone (LH)
• Follicle Stimulating Hormone (FSH)
• Progesterone
• What is secondary growth?
• Describe the process of secondary thickening in a woody stem
•  Explain how the following blood cells are adapted to their functions - KCSE Biology Essays
• Discuss Lamarck’s and Darwin’s theories of evolution - KCSE Biology Essays
• What is natural selection?
• Discuss three examples of natural selection in action
• Discuss the various mechanisms of opening and closing of stomata - KCSE Biology Essays
• Describe the process of mitosis - KCSE Biology Essays
• Describe the adaptations of Schistosoma spp to their parasitic mode of life - KCSE Biology Essays
• What is meant by the term symbiosis? - KCSE Biology Essays
• Describe five types of symbiotic relationships in a natural ecosystem - KCSE Biology Essays
• Discuss the various ways employed by preys to avoid the predators - KCSE Biology Essays
• Describe the nitrogen cycle - KCSE Biology Essays
• Describe how the various supportive tissues in plants adapt them to their habitats - KCSE Biology Essays
• Why is locomotion necessary in higher animals? - KCSE Biology Essays
• What is digestion? - KCSE Biology Essays
• What is the importance of a balance diet in human nutrition? - KCSE Biology Essays
• Explain how the process of evolution may result to the formation of a new species - KCSE Biology Essays
• Discuss the role of the various hormones in plant growth and development - KCSE Biology Essays
• How is the mammalian eye adapted to its functions? KCSE Biology Essays
• What is transpiration? - KCSE Biology Essays
• Explain how the various environmental factors affect the rate of transpiration - KCSE Biology Essays
• Distinguish between mutations, mutants and mutagens - KCSE Biology Essays
• How are seeds and fruits of plants adapted to their mode of dispersal? - KCSE Biology Essays
• Discuss the composition and functions of mammalian blood - KCSE Biology Essays
• Describe the adaptations of the nervous system to its functions - KCSE Biology Essays
• State the economic importance of members of Monera and Fungi and for each economic importance name a suitable or appropriate organism - KCSE Biology Essays
• Discuss the structure and functions of the various muscle tissues found in humans - KCSE Biology Essays
• Discuss the adaptations of the male reproductive system of humans - KCSE Biology Essays
• Explain the factors that affect enzyme activity - KCSE Biology Essays
• Carbon (IV) Oxide
• Chlorophyll
• Suitable temperature and pH
• Describe the route taken by water from the soil up to the evaporating surface of a plant - KCSE Biology Essays
• How is the mammalian heart adapted to its functions? - KCSE Biology Essays
• What is a reflex action?
• Outline the activities that occur in the body when one touches a hot object
• Discuss the various ways in which anaerobic respiration is utilized in industries and homes - KCSE Biology Essays

To download a specific chapter in PDF format, click on the question heading (below) and you will be redirected to another window where you can download the biology KCSE Essay question with answers in PDF format.

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Good Luck and happy reading :)

Describe what happens to a meal of oily beans and maize from the time of ingestion up to the time of absorption - KCSE Biology Essay

How are the small intestines in mammals adapted to their functions - kcse biology essay, outline and explain the various homeostatic functions of the liver in mammals - kcse biology essay, explain why the following conditions are necessary for photosynthesis - kcse biology, how is the ileum adapted to its functions - kcse biology essay, explain how endotherms respond to heat and cold conditions in their environment - kcse biology essay, describe the route taken by water from the soil up to the evaporating surface of a plant -kcse biology essay, how is the mammalian heart adapted to its functions - kcse biology essay, describe double circulation in mammals - kcse biology essay.

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