Free online crossword

General Science Knowledge

Medium15×1523 words

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Clues in this puzzle

An ensemble of similar cells that carry out a specific function (6)
Substance that can neutralize an acid by accepting hydrogen ions (4)
The basic structural and functional unit of all living organisms (4)
Simple nonflowering plants of a large group that includes the seaweeds (5)
Molten rock that reaches the surface of a planet (4)
Process by which green plants use sunlight to synthesize nutrients from carbon dioxide and water (14)
The extremely hot innermost layer of the Earth (4)
Triatomic form of oxygen that blocks harmful ultraviolet radiation (5)
Subatomic particle of about the same mass as a proton but without an electric charge (7)
Unit of heredity transferred from parent to offspring (4)
A group of living organisms consisting of similar individuals capable of exchanging genes (7)

Optical instrument designed to make distant objects appear nearer (9)
Red liquid that circulates in the arteries and veins of vertebrates (5)
A pure substance consisting entirely of atoms with the same number of protons (7)
The quantitative property that must be transferred to an object to perform work (6)
A change in the DNA sequence of an organism's genome (8)
The double helix molecule carrying genetic instructions (3)
Threadlike structure of nucleic acids and protein found in the nucleus of most living cells (10)
Envelope of gases surrounding the Earth or another planet (10)
A solid piece of debris from an object that originates in outer space and survives its passage through the atmosphere to reach the surface of a planet (9)
The positively charged central core of an atom (7)
An atom or molecule with a net electric charge due to the loss or gain of electrons (3)
Submicroscopic infectious agent that replicates only inside the living cells of an organism (5)