Topic 1
All of the chemical reactions that occur within the cell of an organism
Metabolism
The basic unit of structure and function that makes up all organism
cell
The process by which some organisms are able to capture light energy and use it to make food from carbon dioxide and water
Photosynthesis
Constant small corrections that normally occur to keep an organisms internal environment balanced
Homeostasis
a nonliving particle of protein and genetic material that reproduces by invading the cell of a living organism
virus
Cell respiration
The process by which organisms produce new organisms of the same type
Reproduction
A sugar that is a major source of energy for cells
Glucose
A cycle in which the output of a system either modifies or reinforces the first action taken by the system
Feedback mechanism
the body's primary defense against disease-causing pathogens
immune system
A structure within the cell that carries out a specific function
Organelle
A large structure within a cell that controls the cell's metabolism and stores genetic information, including chromosomes and DNA
A compound that stores energy in cells
ATP
any change in the environment that causes an organism to react
a molecule found on the outer surfaces of cells that the immune system recognizes as either part of the body or an outside invader
antigen
The ability of an organism to maintain a stable internal environment even when the external environment changes
Homeostasis
Tiny structures in the cell that are the sites of protein production
Ribosomes
Green organelles that contain chlorophyll
chloroplasts
a condition other than injury that prevents the body from working as it should
disease
a protein produced by the immune system that either attacks invading pathogens or marks them for killing
antibody
What is synthesis?
A life process that involves combining simple substances into more complex substances?
What is an enzyme?
Proteins that speed up the rate of chemical reactions in living things.
What is pH?
A measure of whether a substance is acidic, basic, or neutral.
What is a pathogen
an organism that invades the body causing disease
What is a vaccine?
A substance make of weakened, killed, or partial pathogens and designed to protect the body from future invasions of that pathogen