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21 Cards in this Set

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  • 3rd side (hint)
Lipids are energy-rich, organic compounds made of carbon, hydrogen and oxygen. Fats, oils and waxes are all lipids.
A carbohydrate is an energy-rich organic compound made of tthe elements carbon, hydrogen, and oxygen. Sugars and starches are examples of carbohydrates.
nucleic acid
A nucleic acid is a very large organic molecule made of carbon, oxygen, hydrogen, nitrogen an dphosphorus. Nucleic acids contain the instructions that cells need to carry out all the functions of life.
An enzyme is a type of protein that speeds up a chemical reaction in a living thing. Without enzymes, many chemical reactions that are necessary for life would either take too long or would not occur at all.
Enzymes in your saliva speed up the digestion of food by breaking down starches into sugars in your mouth.
A protein is a large organic molecule made of carbon, hydrogen, oxygen, nitrogen and in some cdases, sulfur. Foods high in sulfur include meat, eggs, fish, nuts, and beans.
An element is any substance tha cannot be broken down into simple substance. An element is made up of only kind of atom.
The elements found in living things include carbon, hydrogen, oxygen, nitrogen, phosphorus and sulfur.
The smalles unit of an element is called an atom.
When two or more elements combine chemically they form a compound.
When hydrogen and oxygen combine in the right proportion, they make a compound called 'water' or H2O.
The smallest unit of a compound is called a molecule. Water, for example, is a compound of made up of hydrogen and oxygen.
organic compound
Most compounds that contain carbon are called organic compounds. Many of these compounds are found in living things.
inorganic compound
Compounds that don't contain the element CARBON are called inorganic compounds. There is one exception to this rule: carbon dioxide, CO2, is an inorganic compound.
The process by which molecules tend to move from an area of higher concentration to an area of lower concentration.
selectively permeable
A cell membrane is ______________ which means that some substances can pass through the membrane while other substances cannot pass through it.
another word for 'stuff' or 'material'
transport by engulfing
This is another method of active transport. First, the cell membrane surrounds, or engulfs, a particle. Then, once the particle is engulfed, the cell membrane pinches off and forms a vacuole within the cell. The cell will use energy in this process.
active transport
Active transport is the movement of materials (of substances) through a cell membrane using energy.
passive transport
The movement of materials through a cell membrane without using energy is called passive transport.
The process by which a cell captures the energy in sunlight and uses it to make food is called 'photosynthesis'.
a colored chemical compound that absorbs light, producing color
The small openings on the underside of most leaves through which oxygen and carbon dioxide can move.
the main pigment found in the chloroplasts of plants