Ch 1 : Cells And Heredity Flashcards
A rigid layer of nonliving material that surrounds the cells of plants and some other organisms
Cell wall
A cell structure that controls which substances can enter or leave the cell
Cell membrane
A cell structure that contains Nucleic acids the chemical instructions that direct all the cells activities
Nucleus
Rod shaped structures that convert energy in food molecules to energy the cell ca use to carry out its functions
Mitochondria
A structure in the cells of plants and some other organisms that captures energy from the sunlight and uses it to produce food
Chloroplast
Any substance that cannot be broken down into simpler substances
Element
Two or more elements that are chemically combined
Compound
Energy rich organic compound such as a sugar or a starch that is made of the element carbon hydrogen and oxegyn
Carbohydrate
Large organic molecule made of carbon hydrogen and oxygen nitrogen and sometimes sulfur
Protein
Deoxyribonucleic acid the genetic material that carries information about an organism and is passed from parent to offspring
DNA
Ribonucleic acid a Nucleic acid that plays an important. Role in the production of proteins
RNA
A property of cell membranes that allows some substances to pass through while others cannot
Selectively permeable
The process by which molecules move from an area of high concentration to an area of low concentration
Diffusion
The diffusion of water molecules through a selectively permeable membrane
Osmosis
The basic unit of structure and function in living things
Cell
