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Vocabulary for IELTS (Academic) - Biology

Here you will learn some English words about biology, such as "cycle", "gene", "fertile", etc. that are needed for the IELTS exam.

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Words for Academic IELTS
biology
biology
[noun]

the scientific study of living organisms; the science that studies living organisms

Ex: She developed a keen interest in biology and decided to pursue a career in medicine. 
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biologist
biologist
[noun]

a person who studies the science that deals with living organisms

Ex: The biologist spent years researching the behavior of dolphins in the wild to better understand their social structures. 
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cycle
cycle
[noun]

(biology) a series of transformations and events that happen in an animal or plant's lifetime

Ex: The water cycle describes how water moves through the environment in different forms. 
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to divide
to divide
[Verb]

to separate people or things into two or more groups, parts, etc.

Ex: The teacher divides the class into small groups for a collaborative project. 
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bacteria
bacteria
[noun]

(microbiology) single-celled microorganisms that can be found in various environments, including soil, water, and living organisms, and can be beneficial, harmful, or neutral

Ex: Bacteria play a crucial role in the decomposition of organic matter in the ecosystem. 
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cell
cell
[noun]

an organism's smallest unit, capable of functioning on its own

Ex: The study of cells, known as cell biology or cytology, delves into their structure, function, and interactions. 
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DNA
DNA
[noun]

(biochemistry) a chemical substance that carries the genetic information, which is present in every cell and some viruses

Ex: DNA, or deoxyribonucleic acid, contains the genetic instructions for living organisms. 
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biological
biological
[Adjective]

relating to the science that explores living organisms and their functions

Ex: Biological research investigates the genetic makeup of different species. 
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evolution
evolution
[noun]

(biology) the slow and gradual development of living things throughout the history of the earth

Ex: Evolution is the process by which species change over time in response to environmental pressures. 
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to evolve
to evolve
[Verb]

(biology) to change gradually and over generations into forms that are better adapted to the environment and fitter to survive

Ex: Over millions of years, horses have evolved from small, multi-toed ancestors to the single-toed, large-bodied animals we see today. 
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genetic
genetic
[Adjective]

(of diseases) passed on from one's parents

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gene
gene
[noun]

(genetics) a basic unit of heredity and a sequence of nucleotides in DNA that is located on a chromosome in a cell and controls a particular quality

Ex: The gene responsible for eye color is inherited from both parents. 
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genetics
genetics
[noun]

the branch of biology that deals with how individual features and different characteristics are passed through genes

Ex: Understanding genetics helps scientists explore how diseases are passed through families. 
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germ
germ
[noun]

a small living organism that causes disease or infection

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nerve
nerve
[noun]

each of a group of long thread-like structures in the body that carry messages between the brain and other parts of the body, sensing things is a result of this process

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organism
organism
[noun]

a living thing such as a plant, animal, etc., especially a very small one that lives on its own

Ex: The pond ecosystem is home to a variety of organisms, including fish, algae, and bacteria. 
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species
species
[noun]

a group that animals, plants, etc. of the same type which are capable of producing healthy offspring with each other are divided into

Ex: The Galapagos finches are a classic example of how different species can evolve from a common ancestor. 
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fertile
fertile
[Adjective]

(of an animal, person, or plant) able to produce offspring, fruit, or seed

Ex: She learned that some plants are more fertile in certain climates. 
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mutation
mutation
[noun]

(biology) a change in the structure of the genes of an individual that causes them to develop different physical features

Ex: The fish exhibited a unique fin shape, which was later identified as a result of a genetic mutation. 
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organic
organic
[Adjective]

relating to a carbon-based compound that has a biological origin

Ex: Organic chemistry focuses on the study of carbon-containing compounds and their reactions. 
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metabolism

the chemical processes through which food is changed into energy for the body to use

Ex: Metabolism involves various biochemical reactions that convert nutrients from food into energy. 
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to reproduce

(of a living being) to produce offspring or more of itself

Ex: Animals reproduce by giving birth to or laying eggs that hatch into offspring. 
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parasite
parasite
[noun]

(biology) a small organism that lives on or inside another organism, called a host, and is dependent on it for nutrition and growth

Ex: The mosquito is a well-known parasite that feeds on the blood of its host, often transmitting diseases in the process. 
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tissue
tissue
[noun]

a group of cells in the body of living things, forming their different parts

Ex: Muscle tissue enables movement and supports the body's structure. 
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antibody
antibody
[noun]

a blood protein produced to fight diseases or infections, or in response to foreign substances in the body

Ex: Antibodies stop harmful germs and tag them for immune cells to destroy. 
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dominant
dominant
[Adjective]

(of genes) causing a person to inherit a particular physical feature, even if it is only present in one parent's genome

Ex: The gene for brown eyes is dominant over the gene for blue eyes. 
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genetic engineering

the science or process of deliberately modifying the features of a living organism by changing its genetic information

Ex: Genetic engineering has enabled scientists to create crops that are resistant to pests and diseases, improving agricultural yields. 
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male
male
[Adjective]

belonging to the sex that cannot give birth to babies or lay eggs but is capable of fertilization of the opposite sex

Ex: The male lion's mane and larger size distinguish him from the female lion in the pride. 
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female
female
[Adjective]

belonging to the sex that is fertilized by the opposite sex and can lay eggs or give birth to babies

Ex: The female bird incubates the eggs while the male gathers food for their young. 
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RNA
RNA
[noun]

(biochemistry) a chemical substance that carries the information from DNA to control the cellular protein biosynthesis

Ex: RNA transcribes genetic information from DNA to guide protein production. 
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virus
virus
[noun]

a microscopic agent that causes disease in people, animals, and plants

Ex: A virus entered his body and made him sick. 
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