The first stage of cell respiration is ___ , the breakdown of ___
to form two molecules of ___
. The resulting molecules may pass through several different pathways, depending on the organism in question. In some organisms, such as yeast,___
occurs. In other organisms, aerobic respiration occurs.

Glycolysis porduces
molecules of NADH and
molecules of ATP (net gain).

In an intermediate stage, pyruvic acid is converted into
. This process produces
molecules of NADH (per glucose molecule).

The Krebs cycle takes acetyl CoA and completely oxidizes it to
. In the process,
molecules of ATP are gained. This process also produces
moecules of NADH and
molecules FADH2. (All of these values are per glucose molecule.)

The
is a system of electron carriers embedded into the inner membrane of the mitochondria. The compounds act to accept energy bearing electrons from
and
and transfer them step-by-step to free
, which is reduced by these electrons combining with hydrogen to form
.

Is a measure of the resistance to flow. a high liquid has a high resistance to flow and flows slowly. the ancients thought everything in the world was made of 4 we now know that there are 94 naturally occurring and scientists have created another 24 i am certain they will create even more. honey flows slowly because it has a high to flowing. a can be separated by physical means because it contains more than one pure substance and 2 pure substances are not chemically bonded to each other. a cannot be separated by physical means. all matter is made up of all elements are with the same number of protons. if it is just a single or many bonded together, if all of them have the same number of protons, it is an element. in a piece of pure iron metal, all the are joined together, that piece of iron metal is called elemental iron. a single of iron is called elemental iron. a mixture has differences from place to place. we might need a microscope to see them or they might be obvious to the unaided eye. there are surfaces separating it into different phases. a mixture is the same everywhere. it is uniform. there are no surfaces separating it into different phases. if different kinds of atoms (different elements) are bonded together by their electrons, it is called a there are physical means of to isolate the different pure substances in a mixture and there are chemical means of to isolate the different elements in a compound. 1. element 2. compound 3. mixture 4. heterogeneous 5. homogeneous 6. pure substance 7. atoms 8. separation 9. viscosity 10. resistance