definitions Flashcards
Nucleus
Stores DNA and controls the cell
Cytoplasm
Jelly like substance, where chemical reactions occur
Cell Surface Membrane
Controls what enters and leaves the cell
Mitochondria
Where aerobic respiration occurs
Cell Wall
Supports the cell and contains cellulose
Chloroplast
Contains chlorophyll and where photosynthesis occurs
Vacuole
Contains cell sap
Ribosomes
Where proteins are made
Plasmid
small ring of DNA
Nerve Cell
To carry nerve impulses from one part of the body to another
Sperm Cell
To carry male information to the female egg
Red Blood Cell
transports oxygen around the body
Root Hair Cell
to absorb water and minerals from the soil
Stem Cell
An undifferentiated cell
Diffusion
The spreading out of particles from an area of higher concentration to an area of lower concentration.
Osmosis
The movement of water form an area of higher water concentration to an area of lower water concentration, through a partially permeable membrane.
Independent Variable
Variable that is changed
Dependent Variable
Variable that is measured
Control Variable
Variable that is kept the same
Roots
Absorb water and minerals
Active Transport
The movement of particles from an area of lower concentration to an area of higher concentration requiring energy.
Aerobic Respiration
Glucose + Oxygen = Water + Carbon Dioxide
