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10 Cards in this Set
- Front
- Back
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When and who invented the microscope?
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1600s and Robert Hooke
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Why are red blood cells small and disc shaped?
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So they can easily fit through the smallest blood vessels.
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Cells contain even smaller structures called ___________.
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Organelles
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All cells, except those of bacteria, have similar organelles. For example, every cell is enclosed by a thin covering called the ___ _________.
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Cell membrane
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(Same word for this answer) Most cells have ________. The __________ controls the cells activities.
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Nucleus
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Inside the nucleus are thread like structures called ______________, they contain information about the organism.
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Chromosomes
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(Same word for this answer) Between the cell membrane and the nucleus is the ___________. __________ is a jelly like substance containing many chemicals to keep the cell functioning.
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Cytoplasm
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_________ release energy from food.
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Mitochondria
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________ are storage organelles.
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Vacuoles
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Plant cells also have ________.
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Chloroplasts
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