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Liste de Mots Niveau C2 - Biology

Vous apprendrez ici tous les mots essentiels pour parler de Biologie, rassemblés spécifiquement pour les apprenants du niveau C2.

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CEFR C2 Vocabulary

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

ribosome, ribosomes

ribosome, ribosomes

Ex: The process of translation , where genetic instructions in mRNA are converted into proteins , occurs ribosomes.

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

appareil de Golgi, complexe de Golgi

appareil de Golgi, complexe de Golgi

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

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

lysosome, sac lysosomal

lysosome, sac lysosomal

Ex: During apoptosis (programmed cell death), lysosomes release enzymes that contribute to the breakdown of cellular components.

an organelle that is abundantly present in most cells and is responsible for energy production

mitochondrie

mitochondrie

Ex: Mitochondria contain their own DNA, separate from the nuclear DNA, which is essential for their function and replication.

a plant cell organelle that uses sunlight to produce energy and make glucose through photosynthesis

chloroplaste, chloroplastes

chloroplaste, chloroplastes

Ex: The unique DNA chloroplasts supports the idea that they originated from ancient symbiotic bacteria that formed a mutually beneficial relationship with plant ancestors .

a molecule that forms the basic building block of DNA and RNA, consisting of a sugar, a phosphate group, and a nitrogenous base

nucléotide, nucleotide

nucléotide, nucleotide

Ex: Mutations can occur when the sequence nucleotides in DNA is altered .

a linear chain of amino acids linked by peptide bonds, forming a primary structure of a protein

polypeptide, polypeptide (pour la biologie)

polypeptide, polypeptide (pour la biologie)

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

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

organite, organelle

organite, organelle

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

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

vacuole, vacuole cellulaire

vacuole, vacuole cellulaire

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

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

centrioles, centrioles (note: typically used as a plural noun in French)

centrioles, centrioles (note: typically used as a plural noun in French)

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

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

histone, protéine histonique

histone, protéine histonique

Ex: Changes histone structure can influence the three-dimensional organization of the genome .

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

télomère, séquence terminale de l'ADN

télomère, séquence terminale de l'ADN

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

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

phénotype, phénotype observable

phénotype, phénotype observable

Ex: Inherited traits , such as freckles or dimples , contribute to an individualphenotype.

the tendency of an organism or cell to regulate its internal environment and maintain a stable, balanced condition, despite external changes

homéostasie, équilibre interne

homéostasie, équilibre interne

Ex: The release of hormones like adrenaline during stress is part of the body 's response to homeostasis in challenging situations .

the process by which the information encoded in the sequence of nucleotides in DNA is converted into a functional product, typically a protein

traduction, transcription

traduction, transcription

Ex: Various enzymes and initiation factors are involved in the regulation and control translation.

the process by which a segment of DNA is used as a template to synthesize a complementary RNA molecule

transcription, transcription génétique

transcription, transcription génétique

Ex: The template ( antisense ) strand of DNA serves as a guide for RNA synthesis transcription.

the process by which an organism duplicates its genetic material, particularly the copying of DNA in cell division

réplication, dupliquer

réplication, dupliquer

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

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

codon, triplet de bases

codon, triplet de bases

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

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

symbiose

symbiose

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 .
ameba
[nom]

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

amebocyte, amibe

amebocyte, amibe

Ex: Amebas play a role in nutrient cycling by consuming bacteria and organic matter in their habitats.

a simple, single-celled organism that lacks a true nucleus and membrane-bound organelles, such as bacteria and archaea

procaryote, prokaryote

procaryote, prokaryote

Ex: Many diseases , like strep throat , are caused by prokaryotes.

a green pigment found in all green plants and cyanobacteria that is responsible for the absorption of the sunlight needed for the photosynthesis process

chlorophylle

chlorophylle

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

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

capside, enveloppe virale

capside, enveloppe virale

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

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

eucaryote, eucaryotes

eucaryote, eucaryotes

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

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

ovule, œuf

ovule, œuf

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

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

pepsine, enzyme pepsine

pepsine, enzyme pepsine

Ex: Excessive production pepsin can contribute to conditions such as gastritis and peptic ulcers .

a molecule that carries energy within cells, composed of adenine, a ribose sugar, and three phosphate groups

adénosine triphosphate, ATP

adénosine triphosphate, ATP

Ex: Adenosine triphosphate is a transient molecule , continuously being generated and used within cells .

a network of protein fibers in a cell that gives it shape, supports its structure, and aids in movement

cytosquelette, squelette cellulaire

cytosquelette, squelette cellulaire

Ex: cytoskeleton is crucial for maintaining cell polarity , ensuring proper organization and function .
Liste de Mots Niveau C2
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