5 Written questions
5 Matching questions
- kinetic energy
- second law of thermodynamics
- adenosine triphosphate (ATP)
- cellular respiration
- a The movement of materials out of the cytoplasm of a cell by the fusion of vesicles with the plasma membrane.
- b The principle whereby every energy conversion reduces the order of the universe, increasing its entropy. Ordered forms of energy are at least partly converted to heat.
- c The energy of motion; the energy of a mass of matter that is moving. Moving matter does work by imparting motion to other matter.
- d The aerobic harvesting of energy from food molecules; the energy-releasing chemical breakdown of food molecules, such as glucose, and the storage of potential energy in a form that cells can use to perform work; involves glycolysis, the citric acid cycle, and oxidative phosphorylation (the electron transport chain and chemiosmosis).
- e Main energy source for cells.
5 Multiple choice questions
- The energy that matter possesses because of its location or arrangement. Water behind a dam and chemical bonds possess potential energy.
- Method by which organisms regulate solute concentrations and balance the gain and loss of water.
- Referring to a solution that, when surrounding a cell, will cause the cell to lose water.
- A method of metabolic control in which a product of a metabolic pathway acts as an inhibitor of an enzyme within that pathway.
- The change in shape of the active site of an enzyme, induced by entry of the substrate so that it binds more snugly to the substrate.
5 True/False questions
active site → The part of an enzyme molecule where a substrate molecule attaches (by means of weak chemical bonds); typically, a pocket or groove on the enzyme's surface.
entropy → A measure of disorder. One form of disorder is heat, which is random molecular motion.
endocytosis → Cellular uptake of molecules or particles via formation of new vesicles from the plasma membrane.
heat → The capacity to perform work, or to rearrange matter.
enzyme → A protein (or RNA molecule) that serves as a biological catalyst, changing the rate of a chemical reaction without itself being changed into a different molecule in the process.