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Living things are all around us. They include humans, animals, plants, and even tiny organisms we cannot see with our eyes. In this guide, you will clearly understand what living things are, how scientists define them, and how they differ from non-living things. Moreover, you will explore examples, diagrams, activities, worksheets, and common mistakes students … Read more
Definition: The cell membrane is a thin, flexible barrier that surrounds every living cell, controlling what enters and exits while protecting the cell’s internal chemistry. Pronunciation: /sɛl ˈmɛmbreɪn/ (sel MEM-brayn) Read morePhotosynthesis: Process, Equation, and Diagram ExplainedOrigin: The word “membrane” comes from Latin “membrana,” meaning a thin skin or layer. Swiss scientists Nageli and Cramer … Read more
Definition: The nucleus is a membrane-bound organelle found in eukaryotic cells that stores genetic material, controls gene expression, and directs cell growth and reproduction. Pronunciation: /ˈnjuːkliəs/ (NEW-klee-us) Read morePhotosynthesis: Process, Equation, and Diagram ExplainedOrigin: The word comes from Latin “nucleus,” meaning kernel or inner part. Robert Brown first used this term in 1831 when he … Read more
Definition: DNA stands for deoxyribonucleic acid. It acts as the instruction manual inside every living cell. DNA tells cells how to grow, function, and reproduce. Pronunciation: dee-EN-AY Read morePhotosynthesis: Process, Equation, and Diagram ExplainedOrigin: Scientists coined the term “DNA” from the chemical name deoxyribonucleic acid. The word “nucleic” comes from the nucleus, where DNA lives … Read more
Definition: Cell organelles are specialized structures inside living cells. Each one performs a specific job to keep the cell healthy and working. Pronunciation: /sel ɔːrɡəˈnɛlz/ (sell or-guh-NELZ) Read morePhotosynthesis: Process, Equation, and Diagram ExplainedOrigin: The word “organelle” comes from Latin. “Organellum” means “little organ.” Scientists chose this name because organelles work like tiny organs inside … Read more
Definition: An ecosystem includes all living things and their physical surroundings in a specific area. Living things interact with each other and with non-living factors like water, air, and soil. Pronunciation: EE-koh-sis-tum Read moreWhat Are Living Things? Definition, Characteristics, ExamplesOrigin: The word “ecosystem” comes from two Greek words. “Eco” means house or household. “System” means … Read more
Definition: CRISPR CAS9 technology gives scientists a precise tool to cut and edit DNA inside living cells. Pronunciation: CRISPER-CASS-nine Read morePhotosynthesis: Process, Equation, and Diagram ExplainedOrigin: Scientists coined the word “CRISPR” to describe the clustered repeat patterns they observed in bacterial DNA. Full Acronym: CRISPR stands for Clustered Regularly Interspaced Short Palindromic Repeats. Cas9 stands … Read more
Definition: Kingdom Monera includes all single-celled organisms that lack a true nucleus and membrane-bound organelles. These organisms represent the most basic form of life. Pronunciation: muh-NEER-uh Read morePhotosynthesis: Process, Equation, and Diagram ExplainedOrigin: The word “Monera” comes from the Greek word “moneres,” which means “single” or “solitary.” Scientists chose this name because these organisms live … Read more
Definition: Viruses are tiny infectious agents that invade living cells and force them to make copies of the virus. Pronunciation: VY-rus-es (singular: VY-rus) Read morePhotosynthesis: Process, Equation, and Diagram ExplainedOrigin: The word “virus” comes from the Latin word “virus.” This word originally meant poison or slimy liquid. Introduction Viruses slip into our lives like invisible … Read more
Definition: Useful and harmful bacteria are tiny living things that either help or hurt other organisms. Pronunciation: USE-ful and HARM-ful bak-TEER-ee-uh Read morePhotosynthesis: Process, Equation, and Diagram ExplainedOrigin: The word “bacteria” comes from the Greek word “bakterion.” Bakterion means small rod or staff. Introduction Have you ever eaten yogurt and wondered what makes it thick … Read more