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IELTS Academicの語彙 (スコア8-9) - Biology

ここでは、アカデミックIELTS試験に必要な生物学に関連するいくつかの英語の単語を学びます。

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Vocabulary for Academic IELTS (8)
ribosome
ribosome
[名詞]

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

リボソーム

リボソーム

Ex: Ribosomes are the cellular factories responsible for building proteins, essential for various biological functions. 
Golgi apparatus

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

ゴルジ装置, ゴルジ複合体

ゴルジ装置, ゴルジ複合体

Ex: The Golgi apparatus modifies and packages proteins, ensuring they are properly shaped and functional. 
lysosome
lysosome
[名詞]

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

リソソーム, 酵素で満たされた小胞

リソソーム, 酵素で満たされた小胞

Ex: Lysosomes act as the "recycling centers" of cells, breaking down and digesting cellular waste materials. 
mitochondrion

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

ミトコンドリア, エネルギー産生小器官

ミトコンドリア, エネルギー産生小器官

Ex: The mitochondrion is a membrane-bound organelle found in most eukaryotic cells. 
chromosome
chromosome
[名詞]

a very small threadlike structure in a living organism that carries the genes and genetic information

染色体, 染色体要素

染色体, 染色体要素

chloroplast
chloroplast
[名詞]

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

葉緑体, 光合成器官

葉緑体, 光合成器官

Ex: Chloroplasts are the green structures in plant cells where photosynthesis, the process of converting light into energy, takes place. 
cytoplasm
cytoplasm
[名詞]

the gel-like, semifluid substance within a cell that surrounds the organelles, providing a medium for cellular activities, including metabolism, transport of substances, and support for cellular structures

細胞質, 細胞質物質

細胞質, 細胞質物質

Ex: Cytoplasm fills the interior of a cell, serving as a supportive medium for cellular structures and activities. 
cytoplast
cytoplast
[名詞]

a cell that has had its nucleus removed or the cellular material excluding the nucleus

サイトプラスト, 核を除去された細胞

サイトプラスト, 核を除去された細胞

Ex: The scientist carefully examined the cytoplast under the microscope to analyze its cellular structure. 
cytoskeleton
cytoskeleton
[名詞]

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

細胞骨格, サイトスケルトン

細胞骨格, サイトスケルトン

Ex: The cytoskeleton acts like a cell's internal scaffolding, maintaining its shape and structural integrity. 
nucleotide
nucleotide
[名詞]

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

ヌクレオチド

ヌクレオチド

Ex: The sequence of nucleotides in DNA determines genetic information. 
genome
genome
[名詞]

the complete set of genetic material of any living thing

ゲノム

ゲノム

Ex: The human genome consists of approximately 3 billion base pairs of DNA, encoding all the information needed for human development and function. 
polypeptide
polypeptide
[名詞]

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

ポリペプチド, ポリペプチド鎖

ポリペプチド, ポリペプチド鎖

Ex: Insulin is a polypeptide hormone that regulates blood sugar levels. 
organelle
organelle
[名詞]

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

細胞小器官, オルガネラ

細胞小器官, オルガネラ

Ex: The nucleus, an organelle housing genetic material, regulates cell activities. 
vacuole
vacuole
[名詞]

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

液胞, 小胞

液胞, 小胞

Ex: Vacuoles in plant cells may contain pigments, giving flowers and fruits their vibrant colors. 
centriole
centriole
[名詞]

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

中心体, 中心体の対

中心体, 中心体の対

Ex: Centrioles play a crucial role in animal cell division, forming the mitotic spindle. 
telomere
telomere
[名詞]

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

テロメア, 染色体末端

テロメア, 染色体末端

Ex: Think of telomeres as the plastic tips on the ends of a phone charger cable that keep it from wearing out. 
histone
histone
[名詞]

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

ヒストン, ヒストンタンパク質

ヒストン, ヒストンタンパク質

Ex: Histones act as spools around which DNA winds, forming compact structures called nucleosomes. 
phenotype
phenotype
[名詞]

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

表現型, 観察可能な特性

表現型, 観察可能な特性

Ex: Eye color, hair texture, and height are examples of human phenotypes. 
homeostasis
homeostasis
[名詞]

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

ホメオスタシス, 内部平衡

ホメオスタシス, 内部平衡

Ex: Sweating to cool down the body temperature is an example of homeostasis in response to external heat. 
translation
translation
[名詞]

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

翻訳, 遺伝子翻訳

翻訳, 遺伝子翻訳

Ex: In the first step of translation, messenger RNA (mRNA) is synthesized based on the DNA template. 
transcription

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

転写, 転写過程

転写, 転写過程

Ex: Transcription initiates when RNA polymerase binds to the DNA at the promoter region. 
replication
replication
[名詞]

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

複製

複製

Ex: DNA replication is a fundamental process that occurs before cell division, ensuring genetic continuity. 
heterozygote
heterozygote
[名詞]

an individual organism or cell with two different alleles at a specific gene locus, having inherited different genetic information from each parent

ヘテロ接合体, ヘテロ接合体の個体

ヘテロ接合体, ヘテロ接合体の個体

Ex: An organism with one allele for brown eyes and one for blue eyes is a heterozygote for the eye color gene. 
homozygote
homozygote
[名詞]

an individual organism or cell with two identical alleles at a specific gene locus, having inherited the same genetic information from both parents

ホモ接合体, ホモ接合体の個体

ホモ接合体, ホモ接合体の個体

Ex: An organism with two alleles for brown eyes is a homozygote for the eye color gene. 
codon
codon
[名詞]

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

コドン, コドン配列

コドン, コドン配列

Ex: AUG is the start codon, initiating the translation process in protein synthesis. 
symbiosis
symbiosis
[名詞]

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

共生, 共生関係

共生, 共生関係

Ex: The relationship between cleaner fish and larger fish, where the cleaner fish remove parasites, represents a mutualistic symbiosis. 
ameba
ameba
[名詞]

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

アメーバ, アメーバ

アメーバ, アメーバ

Ex: Amebas are commonly found in various aquatic environments, including freshwater ponds and streams. 
capsid
capsid
[名詞]

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

カプシド, タンパク質の殻

カプシド, タンパク質の殻

Ex: The capsid of a virus provides structural integrity, enclosing and protecting its genetic material. 
chlorophyll
chlorophyll
[名詞]

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

クロロフィル, 緑色色素

クロロフィル, 緑色色素

Ex: Chlorophyll is responsible for the green color of plants, reflecting its role in photosynthesis. 
eukaryote
eukaryote
[名詞]

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

真核生物, 真核生物の生物

真核生物, 真核生物の生物

Ex: Plants, with their roots, stems, and leaves, are examples of eukaryotes. 
fetus
fetus
[名詞]

an offspring of a human or animal that is not born yet, particularly a human aged more than eight weeks after conception

胎児, 胚

胎児, 胚

Ex: The ultrasound showed that the fetus was developing normally. 
ovum
ovum
[名詞]

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

卵子, 卵

卵子, 卵

Ex: Human females typically release one ovum during each menstrual cycle. 
pepsin
pepsin
[名詞]

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

ペプシン, タンパク質分解酵素

ペプシン, タンパク質分解酵素

Ex: Pepsin is an enzyme produced in the stomach that helps break down proteins into smaller peptides. 
adenosine triphosphate

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

アデノシン三リン酸, 三リン酸アデノシン

アデノシン三リン酸, 三リン酸アデノシン

Ex: Adenosine triphosphate is often referred to as the "energy currency" of cells due to its role in energy transfer. 
prokaryote
prokaryote
[名詞]

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

原核生物, 原核生物の生物

原核生物, 原核生物の生物

Ex: Bacteria, such as Escherichia coli (E. coli), are common examples of prokaryotes. 
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