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25 Cards in this Set
- Front
- Back
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Living things such as plants and animals.
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ORGANISMS
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What is the basic unit that makes up all living things?
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CELLS
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One of the simplest organisms that is made of one single cell.
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BACTERIA
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What are the 3 basic life processes of the cell that keep organisms alive?
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1) releasing energy from food
2) getting rid of body wastes 3) making new cells for growth and repair |
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These cells are long and thin and contract, or shorten, to produce movement.
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MUSCLE CELLS
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These cells are very long and carry signals from the brain to the muscles.
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NERVE CELLS
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Cells contain even smaller structures called __________.
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ORGANELLES
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A thin covering that holds the parts of the cell together and encloses every cell.
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CELL MEMBRANE
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Most cells have a ___________ which controls the cell's activities.
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NUCLEUS
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A jellylike substance between the cell membrane and the nucleus that contains chemicals that keep a cell functioning.
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CYTOPLASM
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Threadlike structures in the nucleus that contain information about the characteristics of the organism.
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CHROMOSOMES
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An organelle in the cytoplasm that helps release energy from food.
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MITOCHONDRIA
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Organelles that store food, water, and waste.
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VACUOLES
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What two organelles are in plant cells, but not in animal cells?
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CELL WALL AND CHLOROPLASTS
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The organelle in a plant that helps to make food.
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CHLOROPLASTS
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______________ is when particles of a substance move from an area where there are a lot of particles to an area where there are fewer particles.
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DIFFUSION
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The movement of water and dissolved particles through a cell membrane.
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OSMOSIS
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_____________ allows water to flow into the roots of plants.
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OSMOSIS
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Cells that work together to perform a specific function form a _____________.
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TISSUE
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There are ____________ kinds of human tissue.
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FOUR
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This kind of tissue includes the brain and the senses.
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NERVOUS TISSUE
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This kind of tissue includes bones and tendons.
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CONNECTIVE TISSUE
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An animal’s skin is an example of __________.
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EPITHELIAL TISSUE
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Tissues that work together form ___________.
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ORGANS
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Organs that work together to perform a function form a ___________.
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SYSTEM
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