Cells Cycle And Stem Cells Flashcards
Diffusion
The net random movement of particles from an area of low concentration to an area of high concentration.
Mitosis
Normal body cell divided by mitosis
Meiosis
The type of cell division that produces sex cells(sperm and egg cells)
Osmosis
Osmosis is the movement of water molecules from an area of high water concentration (weak/dilute solution) to an area of low water concentration (strong/concentrated solution) through a partially permeable membrane.
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Dissolved substances have to pass through the cell membrane to get into or out of a cell. Diffusion is one of the processes that allows this to happen. Diffusion occurs when particles spread. … Particles diffuse down a concentration gradient, from an area of high concentration to an area of low concen
Chromosome
The cell’s nucleus contains chromosomes made from long DNA molecules. The diagram shows the relationship between the cell, its nucleus, chromosomes in the nucleus, and genes. Nucleus, chromosome and gene
Cytoplasm
A jelly-like material that contains dissolved nutrients and salts and structures called organelles. It is where many of the chemical reactions happen.
Mitrochondria
Organelles that contain the enzymes for respiration, and where most energy is released in respiration.
Ribosomes
A tiny organelle where protein synthesis occurs.
Choloroplast
Organlles that contains the green pigment, chlorophyll, which absorbs light energy for photosynthesis. Contains the enzymes needed for photosynthesis
Nucleus
Contains genetic material, including DNA, which controls the cell’s activities
Cell wall
Made from cellulose fibres and strengthens the cell and supports the plant
Permanent vacoule
Filled with cell sap to help keep the cell turgid.
Prokaryiotic cell
A simple cell that does not have a nucleus – the DNA is free in the cytoplasm
Eukaryotic cell
A type of cell that nucleus