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C2 Level Wordlist - Biology

Here you will learn all the essential words for talking about Biology, collected specifically for level C2 learners.

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CEFR C2 Vocabulary
ribosome
[noun]

a tiny structure within cells that assembles proteins by reading the genetic instructions carried by messenger RNA

Ex: The process of translation , where genetic instructions in mRNA are converted into proteins , occurs ribosomes.
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a cellular organelle involved in the processing, packaging, and distribution of proteins and lipids within the cell, consisting of a stack of flattened membrane sacs called cisternae

Ex: Golgi apparatus is involved in the formation of vesicles that transport materials within the cell or to the cell membrane .
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lysosome
[noun]

a small, enzyme-filled sac in a cell that breaks down waste materials and unwanted substances

Ex: During apoptosis (programmed cell death), lysosomes release enzymes that contribute to the breakdown of cellular components.
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an organelle that is abundantly present in most cells and is responsible for energy production

Ex: Mitochondria contain their own DNA, separate from the nuclear DNA, which is essential for their function and replication.
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a plant cell organelle that uses sunlight to produce energy and make glucose through photosynthesis

Ex: The unique DNA chloroplasts supports the idea that they originated from ancient symbiotic bacteria that formed a mutually beneficial relationship with plant ancestors .
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a molecule that forms the basic building block of DNA and RNA, consisting of a sugar, a phosphate group, and a nitrogenous base

Ex: Mutations can occur when the sequence nucleotides in DNA is altered .
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a linear chain of amino acids linked by peptide bonds, forming a primary structure of a protein

Ex: Collagen , providing structural support to tissues like skin and tendons , is a polypeptide.
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organelle
[noun]

a specialized, membrane-bound structure within a cell that performs specific functions, contributing to the cell's overall structure and function

Ex: Vacuoles , organelles, hold nutrients , waste products , or pigments in plant cells .
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vacuole
[noun]

a cell organelle in plants, fungi, and some protists that stores nutrients, manages waste, and helps maintain cell pressure

Ex: The size and contents vacuoles can change dynamically in response to cellular needs and environmental conditions .
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centriole
[noun]

a pair of small cylinders near the nucleus in animal cells, organizing cell division by forming the mitotic spindle

Ex: Abnormalities centriole structure or function can lead to cell division and developmental issues .
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histone
[noun]

a type of protein that plays a structural role in the packaging of DNA into nucleosomes, fundamental units of chromatin

Ex: Changes histone structure can influence the three-dimensional organization of the genome .
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telomere
[noun]

a repetitive DNA sequence at the end of a linear chromosome, protecting it from deterioration during replication, and playing a role in cellular aging and cancer development

Ex: telomere's repetitive sequence , TTAGGG in humans , prevents the loss of essential genetic information with each round of cell division .
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phenotype
[noun]

the observable physical and behavioral characteristics of an organism, resulting from the interaction of its genotype (genetic makeup) with the environment

Ex: Inherited traits , such as freckles or dimples , contribute to an individualphenotype.
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the tendency of an organism or cell to regulate its internal environment and maintain a stable, balanced condition, despite external changes

Ex: The release of hormones like adrenaline during stress is part of the body 's response to homeostasis in challenging situations .
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the process by which the information encoded in the sequence of nucleotides in DNA is converted into a functional product, typically a protein

Ex: Various enzymes and initiation factors are involved in the regulation and control translation.
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the process by which a segment of DNA is used as a template to synthesize a complementary RNA molecule

Ex: The template ( antisense ) strand of DNA serves as a guide for RNA synthesis transcription.
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the process by which an organism duplicates its genetic material, particularly the copying of DNA in cell division

Ex: Errors during replication are corrected by proofreading mechanisms to maintain genetic fidelity .
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codon
[noun]

a sequence of three adjacent nucleotides in mRNA that codes for a specific amino acid during protein synthesis or serves as a start or stop signal in the translation process

Ex: UGA , UAA , and UAG are codons, signaling the end of protein synthesis .
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symbiosis
[noun]

a close and often long-term interaction between two different species living in close physical association, typically to the advantage of both

Ex: The coral reefs showcase a remarkable example symbiosis, where corals and algae live together , with corals providing shelter and nutrients while algae provide food through photosynthesis .
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ameba
[noun]

a single-celled, microscopic organism belonging to the group of protozoa, characterized by a flexible cell membrane and the absence of a fixed body shape

Ex: Amebas play a role in nutrient cycling by consuming bacteria and organic matter in their habitats.
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a simple, single-celled organism that lacks a true nucleus and membrane-bound organelles, such as bacteria and archaea

Ex: Many diseases , like strep throat , are caused by prokaryotes.
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a green pigment found in all green plants and cyanobacteria that is responsible for the absorption of the sunlight needed for the photosynthesis process

Ex: Algae and cyanobacteria also chlorophyll, allowing them to carry out oxygenic photosynthesis .
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capsid
[noun]

the protein coat of a virus that encases its genetic material and helps it attach to and enter host cells during infection

Ex: Understanding the structure and function of capsids is essential for developing antiviral strategies and vaccines .
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eukaryote
[noun]

a type of living thing with cells that have a nucleus and other structures enclosed in membranes, like plants, animals, fungi, and some microorganisms

Ex: Seaweeds, with their diverse forms, are eukaryotic algae found in marine ecosystems.
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ovum
[noun]

a mature, female reproductive cell or egg, typically larger than a sperm cell, capable of fusing with a sperm cell during fertilization to form a zygote

Ex: Scientists study ovum to better understand reproductive biology and improve fertility treatments .
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pepsin
[noun]

an enzyme produced in the stomach that helps in the digestion of proteins by breaking them down into smaller peptides

Ex: Excessive production pepsin can contribute to conditions such as gastritis and peptic ulcers .
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a molecule that carries energy within cells, composed of adenine, a ribose sugar, and three phosphate groups

Ex: Adenosine triphosphate is a transient molecule , continuously being generated and used within cells .
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a network of protein fibers in a cell that gives it shape, supports its structure, and aids in movement

Ex: cytoskeleton is crucial for maintaining cell polarity , ensuring proper organization and function .
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