1. All living things are composed of cells 2. Cells are the basic unit of all organisms 3. All cells arise from pre-existing cells

A unicellular organism that lacks a nucleus and membrane bound organelles.

A cell that contains a nucleus and membrane bound organelles.

Any of the organised or specialised structures within a living cell. E.g, nucleus, mitochondria, ribosomes, etc.

A microscopic membrane of lipids and proteins which forms the external boundary of the cytoplasm in a cell or encloses a vacuole, and regulates the passage of molecules in and out of the cytoplasm.

A relatively constant internal physical and chemical conditions that organisms maintain.

A jellylike fluid inside the cell in which the organelles are suspended that contains chemical nutrients.

The large network consisting of protein fibers and other molecules that gives shape and structure to cells in the body.

A structure found inside cells that is involved in making proteins. It particularly helps link amino acids together to form proteins.

The structure in a cell that controls and regulates the activities of the cell (e.g., growth and metabolism) and contains chromosomes which is where DNA is found.

An area inside the nucleus of a cell that is made up of RNA and proteins and is where ribosomes are made.

endoplasmic reticulum

A complex network of tubular membranes exclusively present in the cytoplasm of the eukaryotic cell.

Golgi Complex (or Golgi Apparatus)

A membrane-bound organelle found in eukaryotic cells that is made up of a series of flattened stacked pouches called cisternae. It helps make and package materials to be transported out of the cell.

selectively permeable

A property of biological membranes that allows some substances to pass across it while others cannot; also called semipermeable membrane.

A cell organelle filled with enzymes needed to break down certain materials in the cell.

An organelle found in large numbers in most cells, in which the biochemical processes of cellular respiration and energy production occur. (AKA "the powerhouse of the cell")

An organelle found in cells of plants and some other organisms that captures the energy from sunlight and converts it into chemical energy (used in the process of photosynthesis)

Cell organelle that stores materials such as water, salts, proteins, and carbohydrates.

A rigid layer of nonliving material that surrounds the cells of plants and some other organisms.

A small, membrane-bound sac that transports subjects in and out of cells.

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Cells Biology

Yr 11 Biology Course Module 1: "cells as the basis of life"

Term	Definition
Modern Cell Theory	1. All living things are composed of cells 2. Cells are the basic unit of all organisms 3. All cells arise from pre-existing cells
Prokaryote	A unicellular organism that lacks a nucleus and membrane bound organelles.
Eukaryote	A cell that contains a nucleus and membrane bound organelles.
organelle	Any of the organised or specialised structures within a living cell. E.g, nucleus, mitochondria, ribosomes, etc.
plasma membrane	A microscopic membrane of lipids and proteins which forms the external boundary of the cytoplasm in a cell or encloses a vacuole, and regulates the passage of molecules in and out of the cytoplasm.
homeostasis	A relatively constant internal physical and chemical conditions that organisms maintain.
cytoplasm	A jellylike fluid inside the cell in which the organelles are suspended that contains chemical nutrients.
cytoskeleton	The large network consisting of protein fibers and other molecules that gives shape and structure to cells in the body.
ribosome	A structure found inside cells that is involved in making proteins. It particularly helps link amino acids together to form proteins.
nucleus	The structure in a cell that controls and regulates the activities of the cell (e.g., growth and metabolism) and contains chromosomes which is where DNA is found.
nucleolus	An area inside the nucleus of a cell that is made up of RNA and proteins and is where ribosomes are made.
endoplasmic reticulum	A complex network of tubular membranes exclusively present in the cytoplasm of the eukaryotic cell.
Golgi Complex (or Golgi Apparatus)	A membrane-bound organelle found in eukaryotic cells that is made up of a series of flattened stacked pouches called cisternae. It helps make and package materials to be transported out of the cell.
selectively permeable	A property of biological membranes that allows some substances to pass across it while others cannot; also called semipermeable membrane.
lysosomes	A cell organelle filled with enzymes needed to break down certain materials in the cell.
mitochondria	An organelle found in large numbers in most cells, in which the biochemical processes of cellular respiration and energy production occur. (AKA "the powerhouse of the cell")
chloroplast	An organelle found in cells of plants and some other organisms that captures the energy from sunlight and converts it into chemical energy (used in the process of photosynthesis)
vacuoles	Cell organelle that stores materials such as water, salts, proteins, and carbohydrates.
cell wall	A rigid layer of nonliving material that surrounds the cells of plants and some other organisms.
vesicle	A small, membrane-bound sac that transports subjects in and out of cells.

Created by: Rosie--

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