NAS2 Exam 2 Questions with Complete Solutions

NAS2 Exam 2 Questions with Complete Solutions Chemical reactions that break down biomolecules in organisms are called ______? - Answer-Catabolic Reactions Hypotonic - Answer-solution that is less concentrated than the inside of the cell Hypertonic - Answer-solution that is more concentrated than the inside of the cell Isotonic - Answer-solution that has an equal concentration level to that of the inside of the cell A difference in the number of molecules or ions in two associated areas is an example of ... - Answer-Concentration gradient When ATP releases its energy, it forms... - Answer-ADP + Pi The inside of a cell contains 0.9% NaCl and the outside of the cell contains 0.9% NaCl. Which way will water diffuse? - Answer-Water will move equally in both directions. The reaction ATP - ADP + Pi + energy is what type of reaction? - Answer-Exergonic Which of the following conditions would most likely DECREASE the rate at which a molecule will DIFFUSE across a cell membrane - Answer-Decrease the number of channels for that particular molecule The diffusion of water through a semipermeable membrane is called - Answer-Osmosis Facilitated diffusion - Answer-transport that requires a membrane protein yet no energy in the form of ATP Enzymes increase the rate of a given reaction by lowering what kind of energy? - Answer-Activation The random movement of particles from an area of high concentration to an area of low concentration, which requires no energy in the form of ATP - Answer-Diffusion Diffusion will continue until what is achieved? - Answer-Equilibrium Enzyme - Answer-a protein molecule that acts as a biological catalyst Cell theory - Answer-A cell in the basic structural and functional unit of a living organism Cell - Answer-the smallest unit of life that can survive and reproduce on its own The lipid bilayer is composed of .... - Answer-a hydrophilic head and hydrophobic tails The primary energy carrier molecule in the cell - Answer-ATP