Grade 8 - Cells
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
