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25 Cards in this Set

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