Science

• Cells are the basic building blocks of life.
• The human body is made up of cells.
• Fossilization occurs when an organism dies and its remains get buried under layers of mud and sand.
• Cells can be classified based on their shape (eukaryotic or prokaryotic) and function (animal, plant, fungi).
• The three main types of cells are plant, animal, and bacteria.
• There are different types of cells, including skin cells, muscle cells, nerve cells, blood cells, and bone cells.
• There are different types of cells, including animal cells, plant cells, bacteria, fungi, protists, and archaea.
• Animal cells have a cell membrane, cytoplasm, nucleus, mitochondria, ribosomes, endoplasmic reticulum (ER), Golgi apparatus, lysosomes, centrioles, cilia, flagella, vacuole, and chloroplasts.
• Plant cells have a cell wall, plasmodesmata, central vacuole, amyloplasts, elaioplasts, chromoplasts, leucoplasts, and starch grains.
• Animal cells do not have cell walls but instead rely on other structures to maintain their shape.
• Protists are eukaryotic microorganisms with diverse shapes and functions.
• Fungi include yeasts, molds, mushrooms, and mildews.
• Bacteria are single-celled organisms that can be found everywhere on Earth.
• Protists are eukaryotes that lack specialized tissues and organs, such as algae, protozoa, slime molds, water molds, and diatoms.
• Fungi include yeast, mushrooms, molds, mildews, rusts, smuts, and puffballs.
• Bacteria do not have a true nucleus but instead contain DNA in the form of a single circular loop called a bacterial chromosome.
• Bacteria cells are small and single-celled, with no nucleus or membrane-bound organelles.
• Animal cells do not have a cell wall but instead rely on other structures like cilia and flagella for movement.
• Animal cells do not have a cell wall but contain a nucleus with genetic material.
• The human body is made up of trillions of cells organized into tissues, organs, systems, and the whole body.
• Protists are eukaryotes with no distinct tissue structure but may contain specialized structures such as chloroplasts for photosynthesis.
• Plants are multicellular organisms that produce their own food through photosynthesis.
• Fungi include yeasts, molds, mushrooms, and mildews, which play important roles in decomposition and food production.
• The human body is home to trillions of bacteria, some of which are beneficial while others cause disease.
• Bacteria are prokaryotes that lack a true nucleus and membrane-bound organelles.
• Cells can be classified based on their size, shape, function, and location within an organism.
• Bacteria can be found on the skin, inside the mouth, nose, intestines, and other parts of the body.
• Plasmids are small circles of DNA that carry genes for antibiotic resistance.
• Cell walls protect plant cells from external stresses and give them shape and rigidity.
• Chlorophyll is a green pigment found inside chloroplasts that absorbs light energy from the sun during photosynthesis.
• Some bacteria have flagella to move around, while others use fimbriae to attach themselves to surfaces.
• The cell wall is composed of cellulose microfibrils embedded in a matrix of polysaccharides and proteins.
• The chloroplast is an organelle found only in plant cells where photosynthesis occurs.
• The cell wall is made up of peptidoglycan (in gram-positive bacteria) or lipopolysaccharide (in gram-negative bacteria).
• Plant cells have a rigid cell wall made up of cellulose fibers to support their structure.
• The cell wall also acts as a barrier against pathogens and prevents water loss through osmosis.
• The nucleus contains genetic material (DNA) and controls cell activities such as growth and reproduction.
• Ribosomes synthesize proteins using information encoded by DNA.
• Protoctista is a domain consisting of protists, which includes single-celled organisms such as amoeba, paramecium, and diatoms.
• Mitochondria produce energy through cellular respiration.