7.1 Living Systems
Year 7 Biology Topic Term 1
Terms in this set (13)
Muscles are usually arranged on the skeleton in _____ (opposing) pairs.
A soft tissue inside the bone that produces blood cells.
A connective tissue that is more flexible than bone and that protects the ends of bones and keeps them from rubbing together.
A ratio of the amount of solute to the amount of solution.
Movement of molecules from an area of higher concentration to an area of lower concentration.
A microscope that is similar in purpose to a light microscope but achieves much greater resolving power by using a parallel beam of electrons to illuminate the object instead of a beam of light.
The point of connection between two bones or elements of a skeleton (especially if the articulation allows motion).
A type of organism that is made up of many cells
Directs all activities of the cell and contains heredity material made of proteins and DNA
Membranes allow some substances to diffuse through but not others.
The hard structure (bones and cartilages) that provides a frame for the body of an animal.
Helps bones to slide over each other smothly at a joint.
A type of organism that is made up of a single cell.
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