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ACT Science - Biochemistry and Cell Structure

Here you will learn some English words related to biochemistry and cell structure, such as "nucleus", "lipid", "enzyme", etc. that will help you ace your ACTs.

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ACT Vocabulary for Science
cellulose
[noun]

a substance found in the cell walls of plants, providing structure and making up dietary fiber

Ex: The eco-friendly packaging material is made from recycled cellulose fibers .
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fructose
[noun]

a natural sugar found in fruits and honey, often used to sweeten foods and drinks

Ex: Too much fructose in processed foods may have health effects .
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glucose
[noun]

a basic kind of sugar that is a component of carbohydrates and provides energy for many living organisms

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peptide
[noun]

a short chain of amino acids linked together, which can function as a building block for proteins or act as a signaling molecule in the body

Ex: Researchers are exploring peptide vaccines as a promising approach to combat infectious diseases.
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a type of pigment found in plants, algae, and some bacteria, responsible for bright red, yellow, and orange colors and important for photosynthesis and antioxidant activity

Ex: Scientists study carotenoids to understand their role in human nutrition and disease prevention .
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enzyme
[noun]

a substance that all living organisms produce that brings about a chemical reaction without being altered itself

Ex: The detergent contains enzymes that break down protein stains , such as blood and grass , on clothing .
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proteome
[noun]

the entire set of proteins expressed by a cell, tissue, or organism at a specific time under defined conditions

Ex: Proteome analysis provides insights into cellular functions, signaling pathways, and interactions between proteins.
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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 of nucleotides in DNA is altered .
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a simple sugar molecule, the most basic form of carbohydrates that cannot be further hydrolyzed

Ex: Monosaccharide, like glucose, is a basic sugar in carbohydrates.
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glutamate
[noun]

a fundamental compound derived from glutamic acid, integral to biological functions and known for its role as a neurotransmitter in the central nervous system

Ex: Researchers study the role of glutamate in health and disease , including its impact on neurological conditions such as Alzheimer 's disease .
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a substance, such as vitamin E, that helps clean the body of harmful substances

Ex: The walnuts were a good source of antioxidants, making them a heart-healthy snack option .
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lipid
[noun]

any of a class of organic substances that do not dissolve in water that include many natural oils, waxes, and steroids

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mitochondrial
[Adjective]

relating to or characteristic of mitochondria, which are organelles found in cells responsible for energy production

Ex: Mitochondrial biogenesis refers to the process of creating new mitochondria within cells to meet energy demands .
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cytoplasm
[noun]

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

Ex: Many enzymes responsible for metabolic reactions are present in the cytoplasm.
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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 contain chlorophyll, allowing them to carry out oxygenic photosynthesis .
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membrane
[noun]

a thin sheet of tissue that separates or covers the inner parts of an organism

Ex: The blood-brain barrier is a specialized membrane that protects the brain .
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tissue
[noun]

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

Ex: Adipose tissue , commonly known as fat tissue, stores energy and cushions organs in the body .
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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: The Golgi apparatus is involved in the formation of vesicles that transport materials within the cell or to the cell membrane .
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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 on ribosomes.
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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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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 of vacuoles can change dynamically in response to cellular needs and environmental conditions .
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nucleus
[noun]

(biology) the part of a cell that contains most of the genetic information

Ex: Mutations in genes within the nucleus can lead to genetic disorders and diseases , affecting the normal function of cells and tissues .
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a plant cell organelle that uses sunlight to produce energy and make glucose through photosynthesis

Ex: The unique DNA within 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 network of protein fibers in a cell that gives it shape, supports its structure, and aids in movement

Ex: The cytoskeleton is crucial for maintaining cell polarity , ensuring proper organization and function .
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a branch of biology concerning the scientific study of the form and structure of an organism including plants and animals

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intracellular
[Adjective]

(biology) taking place inside one cell or more

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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 , storage organelles, hold nutrients , waste products , or pigments in plant cells .
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cambium
[noun]

a layer of actively dividing cells in plants, responsible for secondary growth by producing new xylem and phloem tissues

Ex: Botanists study cambium development to understand how plants adapt to changing climates and ecological conditions .
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