Biology 1002B Lecture Notes - Lecture 5: Enthalpy, Glutamine, Thermodynamics

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periwinklesquirrel530

18 Apr 2012

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Defined as the capacity to do work. All energy can be grouped into one of two different states: kinetic and potential. Kinetic: energy possessed by an object because it is in motion, waves in the ocean, a falling rock, kinetic energy of electricity (flow of electrons), motion of planets. Potential/chemical potential: stored energy: the energy an object has because of its location or chemical structure, a boulder at the top of a cliff has potential energy because of its position in the gravitational field of earth. The arrangement of atoms in a molecule of glucose has potential energy stored in the specific arrangement of atoms: chemical potential: energy associated with chemical bonds. System: object being studied, three types. Does not exchanged matter or energy with surroundings. Can exchange energy but not matter with surroundings. Both matter and energy can move freely between system and surroundings.

Related Questions

1)ATP:

a) can be madein exergonic reactions
b) can be used in endergonic reactions
c) consists of adenine, ribose and three phosphate groups d) is anenergy carrier molecule
e) all of the above are true

2) Which typeof energy does glucose have as a result of its chemicalstructure?

a) solarenergy
b) kinetic energy
c) potential energy d) activation energy

3) The firstlaw of thermodynamics states that:

a) energyconversions always increase entropy in the universe b) heat israndom energy of the lowest quality
c) the sum of all an organism

salmonporcupine872

Connect Energy in 5.10 (light energy, thermal energy, kinetic energy,potential energy, chemical energy) to events happen in cells and organisms and explain examples of them.

40. When a protein is synthesized within the cell, this process represents a chemical reaction that is:

		explosive
		exergonic and anabolic
		exergonic and catabolic
		endergonic and anabolic
		endergonic and catabolic

39. Chemical bonds in carbohydrates (i.e., glucose) and fats, have:

		no potential or kinetic energy
		large amount of kinetic energy
		large amount of potential energy
		small amount of potential energy
		small amount of kinetic energy

38. When Na+ moves into the cell following the openning of Na+ channels, _____________________________.

		the ion charge across the membrane in the area that Na+ moves in will change.
		voltage-gated channels will close.
		an action potential will be observed.
		the cell will hyperpolarize.
		same amount of K+ ions will move out of the cell to counteract the Na+ moving into the cell.

blacklion206

Biology 1002B Lecture Notes - Lecture 5: Enthalpy, Glutamine, Thermodynamics

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