a combination of substances in which the individual substances do not change or combine chemically but instead retain their own individual properties: can be gases, solids,liquids, or any combination of them.
100
diffusion is?
a type of passive transport in cells in which molecules move from areas where there are more of them to areas where there are fewer of them.
100
exocytosis is?
process by which vesicles release their contents oustide the cell.
100
Parts of an atom
The electrons are floating around and the protons neutrons are in the middle.
100
photosynthesis is what.
sunlight energy was converted into thermal energy and heated the sidewalk. Plants and many other producers can convert light energy into another kind of energy-chemical energy. this is the process called photosynthesis.
200
organic compound means?
compounds that always contain hydrogen and carbon; carbohydrates, lipids, proteins, and nucleic acids are organic compounds found in living things.
200
equilibrium menas?
occurs when molecules of one substance are spread evenly throughout another substance.
200
metabolism is?
the total of all chemical reactions in an organism.
200
dif between ions and ionic compounds.
ions: atoms alos combine because they've become postitively or negatively charged. Atoms are usually neutral-they have no overall electric charge. when an atom loses and electron, it has more protons than electrons and brcomes positively charge. When it gains an electron it becomes negatively charged, cause more electrons that protons. An ionic compoundic: ions of opposite charges attract one another to form electrically neutral compounds called ionic compounds.
200
respiration is what?
respiration is a chemical reaction that braks down food molecules into simpiler substances and release their stored energy. just as in photosynthesis, respiration needs enzymes for the chemical reactoins of respiration.
300
enzymes are?
a type of protein that regulates nearly all chemical reactions in cells; a types of protein that speeds up chemical reactions in the body without being changed or used up itself.
300
osmosis is?
a type of passive transport that occurs when water diffuses through a cell membrane.
300
photosynthesis is?
process by which plants and many other producers use light energy to produce a simple sugar from carbon dioxide and water and give off oxygen.
300
mixtures and solutions.
a mixture is a combination of substances in which individual substances retain their own properties. Mixtures can be solids, liquids, gases, or any combination of them. in a solution is two or more substances are mixed evenly. A cell's cytoplasm is a solutin of dissolved molecules and ions.
300
fermentation is what?
when cell do not have enough oxygen for respiration they use fermentation to release some of the energy stored in glucose molecules.
400
inorganic compunds are?
a compund, such as H2O, that is made from elements other than carbon and whose atoms usually can be arranged in only one structure.
400
ative transport is?
energy-requiring process in which transport proteins bind with particles and move them through a cell membrane.
400
resperation is?
process by which producers and consumers release stored energy from food molecules; series of chemical reactions used to release energy stored in food molecule.
400
dif between organic and inorganic compounds.
an organic compound always contains carbon and hydrogen and usually are associated with living things. one exception would be nonliving things taht are products of living things. an inorganic compound is made up of elements other than carbon. Generally, inorganic molecules cont fewwer atoms that organic molecules. inorganic compounds are the source for many elements need by living things.
500
passive transport is?
movement of substances through a cell membrane without the use of cellular energy; includes diffusion, osmosis, and facilitated diffusion.
500
endocytosis is?
process by which a cell takes in a substance by surrounding it with the cell membrane.
500
fermentation is?
process by which oxygen-lacking cells and some one-celled organisms release small amoutns of energy from glucose molecules and produce wastes such as alcohol, carbon dioxide, and lactic acid.
500
types of cellular transport.
passive transport, diffusion, osmosis-diffusion of water, facilitated diffusion, active transport, endocytosis and exocytosis.