unit 4 vocab quiz Flashcards
(27 cards)
Nonrenewable resources
Used faster than the rate at which they form
Renewable resource
A natural resource that can be re-
placed at the same rate at which it is used
Ecological footprint
The amount of land necessary to produce and maintain enough food and water, shelter, energy, and waste
Pollution
Any undesirable factor, or pollutant, that is added to the air, water, or soil
Smog
A type of air pollution caused by the interaction of sunlight with pollutants produced by fossil fuel emissions
Particulates
Microscopic bits of dust, metal, and unburned
fuel, 1–10 microns in size, that are produced by many industrial processes
Acid rain
A type of precipitation produced when pollutants in the water cycle cause rain pH to drop below normal levels.
Greenhouse effect
Occurs when carbon dioxide, water, and methane
molecules absorb energy reradiated by Earth’s surface and slow the release of this energy from Earth’s atmosphere.
Global warming
The trend of increasing global temperatures
ATP
A molecule that transfers energy from the breakdown of food molecules to cell processes
ADP
Is a lower-energy molecule that can be converted into ATP by the addition of a phosphate group
Chemosynthesis
is a process by which some organisms use chemical energy to make energy-storing carbon-based molecules
Photosynthesis
A process that captures energy from sunlight to make
sugars that store chemical energy
Chlorophyll
Is a molecule in chloroplasts, that absorbs some of the energy in visible light
Thylakoids
Membrane inside chloroplasts that that contains components for photosynthesis
Light-dependent reactions
Capture energy from sunlight. These reactions take place within and across the membrane of the thylakoids
Light-Independent reactions
Use energy from the light-dependent
reactions to make sugars. These reactions occur in the stroma of chloroplasts. Carbon dioxide molecules (CO2) are needed during this stage of photosynthesis
Photosystems
Series of light-absorbing pigments and proteins that capture and transfer energy in the thylakoid membrane
Electron transport chain
Series of proteins in the thylakoid and mitochondrial membranes that aid in converting ADP to ATP by transferring electrons.
ATP synthase
Enzyme that catalyzes the reaction that adds a high-energy phosphate group to ADP to form ATP
Calvin cycle
A biochemical pathway of photosynthesis in which carbon dioxide is converted into glucose using ATP
Cellular respiration
Releases chemical energy from sugars and other carbon-
based molecules to make ATP when oxygen is present
Glycolysis
Splits glucose into two three-carbon molecules and makes two molecules of ATP. Glycolysis takes place in a cell’s cytoplasm and does not need oxygen
Anaerobic
Does not need oxygen to take place - Glycolysis