Cellular Respiration Flashcards
Cellular respiration
the cellular process (metabolic reactions) that releases energy from molecules that are organic compounds (organic = carbon-containing molecules).
EX: carbohydrate = C6, H12, O6
cells are able to transfer energy from food to ATP.
Metabolism
the sum total of all energy transformations that occur in the body.
Metabolic reactions - 2 types:
Anabolism
Catabolism
Anabolism
the buildup of larger molecules from smaller ones and requires energy; energy is used to build.
Catabolism
the breakdown of larger molecules into smaller ones and releases energy; energy is produced via the breakdown of molecules.
anaerobic
meaning it occurs in the absence of, does not require, nor uses oxygen
aerobic
meaning it occurs in the presence of, requires, or uses oxygen.
Skeletal muscle cells
able to produce energy anaerobically and/or aerobically as the situation demands it.
the early phases of cellular respiration can take place without the presence of oxygen.
Energy
the capacity to change or move matter; that is, energy is the ability to do work.
Common forms of energy
heat, light, sound, electrical energy, mechanical energy, and chemical energy.
Atom
the smallest particle of an element that has the properties of that element.
molecule
When two or more atoms bond, they form a new kind of particle
compounds
When atoms of different elements combine, they form molecules
Two hydrogen atoms + two oxygen atoms = hydrogen peroxide.
Chemical energy
help in the bonds of molecules and compounds, and that energy is released when bond is broken.
Note: it requires energy to break the bonds!