Grade 8 - Cells

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10 x 40 = 400

If a microscope has an eyepiece with 10x power and you are using the medium power lens (40x), what is the resulting magnification

Cytoplasm

Term for the cell gel - chemical reactions happen here

Cell Membrane

a double-layered membrane that surrounds the cell. Also called the plasma membrane, it regulates what enters and leaves the cell.

Chloroplast

an organelle that converts the radiant energy of the Sun into chemical energy through the process of photosynthesis

nerve cell

carries electrical messages around the body

organelles

cells are made from

nervous system

controls and coordinates all body activities

respiratory system

exchanges gases in the lungs

organ system

groups of organs that work together make up a(n)

tissue

groups of similar cells form

excretory system

removes liquid and gaseous wastes from the body

cell

smallest most basic functional system of any living thing

digestive system

takes in food and breaks it down into the nutrients we need

egg cell

the female gamete ( in animals), contains half the genes of a normal cell

sperm cell

the male gamete ( in animals), contains half the genes of a normal cell

Cell Wall

the rigid, porous outer layer of a plant cell.

circulatory system

transports blood, nutrients, oxygen and liquid and gaseous wastes

muscular system

works with the skeletal system to move parts of the body

organs

2 or more different types of tissue make

Mitochondria

Called the powerhouse of the cell. Where a cell gets all it's energy from.

Nucleus

Chromosomes made from DNA are found here . "The Brain of the Cell", directs all cell's activities

Vacuole

Found in Plant cells. Stores water and other substances


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