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Section 2
Vocabulary Flash Cards
35
Science
8th Grade
03/26/2014

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Cards

Term
CELL
Definition
BASIC UNIT OF LIFE
Term
HOW ARE CELLS, TISSUES AND ORGANS RELATED?
Definition
CELLS ARE ORGANIZED INTO TISSUES. TISSUES MAKE UP ORGANS. ORGANS MAKE UP ORGAN SYSTEMS
Term
Nucleus
Definition
"COMMAND CENTER" directs all cellular activities. ex) movement, growth,etc
Term
Mitochondria
Definition
"POWERHOUSE" - where chemical reactions occur that convert the cell's energy into a form it can use.
Term
Cell Membrane
Definition
"CONTROLLABLE GATEWAY" - that lets needed materials in and waste materials out.
Term
Vacuoles
Definition
"STORAGE ROOMS" where nutrients, water, or any other substance that is stored by the cell. PLANT cells have 1 large vacuole. Animal cells have many.
Term
CYTOPLASM
Definition
"KITCHEN" of the cell. It contains the nutrients required by the cell.
Term
Cell Wall
Definition
"FRAME" of the cell. Found in plant cells but NOT in animal cells. Provides strength and support to plants.
Term
Chloroplasts
Definition
"SOLAR PANELS" of the cell. They are found in the green parts of plants (leaves. They carry out photosynthesis.
Term
Unicellular Organism
Definition
Has 1 cell but can do most things that multicellular organisms do.
Term
Multicellular Organism
Definition
Has 2 or more cells. Rely on many specialized cells to perform functions like feeding, moving, etc..
Term
Amoeba
Definition
a multicellular organism that is found in fresh water. They have Pseudopods
Term
Paramecium
Definition
a multicelluar organism that lives in water and feeds of vegetation. It is covered with hair like structues called Cilia.
Term
Selectively Permeable Membrane
Definition
Is a membrane that allows only particles of a substance to the outside in and from the inside out. (remember the water going in and out of the naked egg)
Term
Osmosis
Definition
Water particles go through a selectively Permeable Membrane. These water particles go from an area of High concentration (lots of water particles) to an area of Low concentration (few water particles).
Term
Diffusion
Definition
Substances going from an area of High concentration to an area of Low concentration. ex) spraying perfume in a room
Term
Effect of Osmosis on Cells
Definition
If concentration level of water is higher outside the cell than in, the water will go into the cell causing it to get larger.
Term
How do Cells Reproduce?
Definition
Cells will divide into two, which results in two identical copies of each cell.
Term
Specialized Cells
Definition
Cells that have different functions. (ex: muscular cells, circulatory cells, nerve cells)
Term
Connective/Epithelial/Nervous/Muscle
Definition
The 4 Tissue Types of human and animal cells?
Term
Protective/Transport/Photosynthetic
Definition
The 3 Tissues in Plants?
Term
Compound Light Microscope
Definition
Any microscope that has two or more lenses
Term
Revolving Nosepiece
Definition
This holds the tree objective lenses on a microscope
Term
Fine Adjustment Knob
Definition
This brings the object into sharper focus
Term
The Stage
Definition
This supports the slide that holds the object you want to view
Term
(preparing) A Wet Mount
Definition
A drop of water on a slide. Then the specimen is place on the drop of water. Then you place a slip over top.
Term
Cilia
Definition
This helps a Paramecium gather food and move around.
Term
Pseudopods
Definition
This helps an Amoeba gather food and move around.
Term
Epithelial Tissue
Definition
This tissue covers the surface of your body. (Skin)
Term
Connective Tissue
Definition
This tissue supports and connects different parts of the body. ( fat, cartilage, bones, tendons)
Term
Nervous Tissue
Definition
This tissue makes up the brain, spinal cord and nerves
Term
Muscle Tissue
Definition
This tissue allows you to move your body and also pumps blood through your heart.
Term
Photosynthetic Tissue
Definition
This plant tissue uses sunlight to produce sugar that the plant uses for energy
Term
Protective Tissue
Definition
This plant tissue is waterproof and protects the plant
Term
Transport Tissue
Definition
This plant tissue has tube-like cells that transports food and water.
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