First law of thermodynamics

Reference no: EM1394568

1) ATP:
a) can be made in exergonic reactions
b) can be used in endergonic reactions
c) consists of adenine, ribose and three phosphate groups d) is an energy carrier molecule
e) all of the above are true
2) Which type of energy does glucose have as a result of its chemical structure?
a) solar energy
b) kinetic energy
c) potential energy d) activation energy
3) The first law of thermodynamics states that:
a) energy conversions always increase entropy in the universe b) heat is random energy of the lowest quality
c) the sum of all an organism's chemical reactions equals zero d) energy cannot be created or destroyed
e) free energy is the portion of a system's energy that can do work
4) The process described in the box below is:
a) endergonic and ?G is negative b) endergonic and ?G is positive c) exergonic and ?G is positive d) exergonic and ?G is negative
5) Which of the following statements regarding lactase is FALSE?
a) lactose intolerance is due to high expression of the lactase enzyme
b) symptoms of lactose intolerance are caused by intestinal bacteria that metabolize lactose c) lactose intolerance highlights the importance of a single enzyme in an organism
d) lactase breaks the disaccharide lactose into the monosaccharides glucose and galactose e) injury or illness in the small intestine can result in lactose intolerance
6) Which curve in the graph on the right represents a bacterial enzyme with an optimal temperature of 78°C?
a) curve 1
b) curve 2
c) curve 3
d) enzymes cannot function at 78°C

Reference no: EM1394568

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