Topic 1 Flashcards
Living things
Active Transport
The movement of molecules across a cell membrane into a region of higher concentration, assisted by enzymes and requiring energy.
Amino Acids
Molecules that combine to form proteins
Cell
Smallest unit on the body and makes up all living organisms
Cell membrane
Controls what goes in and out of the cell
Cell respiration
The process by which cells get energy from glucose.
Chloroplasts
Site of photosynthesis in cell
Circulation
The flow of blood through the heart and blood vessels, and the flow of lymph through the lymph vessels.
Cytoplasm
A gel-like material that fills the area between the plasma membrane and the nuclear membrane. is only in an animal cell.
Digestion
The process by which food molecules are broken down
Diffusion
movement of anything generally from a region of higher concentration to a region of lower concentration.
Enzymes
Protein substances that are necessary for most of the chemical reactions that occur in living cells
Excretion
The removal of wastes from an organism’s body
Homeostasis
The condition of a stable internal environment in an organism
Hormone
The secretions of the endocrine glands
Immunity
The ability of the body to resist disease
Inorganic
any type of compound that is not and organic compound; usually doesn’t contain carbon
metabolism
all the chemical reactions occurring within the cells of an organism
mitochondria
Powerhouse of the cell
Nucleus
Control center of the cell
Organ
A group of tissues that work together to perform a specific function
Organ System
A group of organs that work together to perform a specific function
Organelle
The specialized structures in a cell that do different functions
organic
Compounds that contain hydrogen and carbon
Receptor molecule
In a nervous system the specialized structure sensitive to certain types of stimuli
