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Science Chapter 1 Key Words

Across
A living thing
The organelle that controls all the activities within a cell
One of the main ideas of modern biology; contains 3 parts
A thin protective covering that separates the interior of a cell from its surroundings
A jelly-like substance within a cell
A tiny non-living particle capable of reproducing only when they are inside a host cell
In cells, a network of membrane covered channels that transport materials
Any of various groups of single-celled micro-organisms, some of which can cause disease
A type of cell whose organelles are not surrounded by membranes
A powerful type of microscope that scientists use for research
The basic unit of life
Down
A temporary storage compartment in cells
The diffusion of water particles through a selectively permeable membrane
A cell structure containing digestive chemicals to break down food particles, cell wastes, and worn-out cell parts
A type of microscope usually used in science classes and medical laboratories
A tough, rigid structure that surrounds and protects a plant cell
An image made by an electron microscope
The movement of particles from a higher concentration to a lower concentration
The energy producers in a cell that carry out cellular respiration to produce energy for the cell
A type of cell whose organelles are surrounded by membranes
A structure in cells that sorts proteins and packs them into vesicles
A part of a plant cell that traps energy from the Sun and changes it into chemical energy
A cell part in which functions are carried out to ensure the cell's survival
The total of all chemical reactions that take place in the cells
A cell part that assembles proteins