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Biology
Chemistry
Physics
100
The major constituent of blood plasma is: A) Protein B) NaCl C) Water D) Cholesterol
C) Water
100
What is the electron configuration of chloride? A. 1s2 2s2 2p6 3s2 3p5 B. 1s2 2s2 2p6 3s2 3p6 C. 1s2 2s2 2p6 3s2 3p6 4s1 D. 1s2 2s2 2p6 3s2 3p5 3d1
B. 1s2 2s2 2p6 3s2 3p6
100
A 5-kg stone dropped from a height of 25.0 m reaches a velocity of 22 m/s as it strikes the ground. The final speed of a 10 kg stone dropped from 25.0 m will be: A) 10.0 m/s B) 17.25 m/s C) 22 m/s D) 44 m/s
C) 22 m/s
200
The DNA doubles and chromosomes replicate during which phase of the cell cycle? A) G1 B) Metaphase C) S period of interphase D) G2
C) S period of interphase
200
A solution is prepared with 25 g of NaCl with 500 mL of water. The molar mass of sodium and chlorine is 22.89 g and 35.45 g respectively. The molarity of the solution is: A) 0.37 M B) 0.52 M C) 0.86 M D) 0.98 M
C) 0.86
200
As a car comes to a stop, kinetic energy of the car is dissipated into thermal energy as a result of which of the following forces?' A) Friction B) Normal C) Weight D) Tension
A) Friction
300
A basic packing unit of a chromosome is the: A) centromere B) nucleosome C) nucleotide D) histone
D) histone
300
Assuming an initial concentraion of radon gas inside a house, what fraction of the initial concentration will remain in the house after FOUR half lifes? *HINT: Half life is the amount of time for an amount of a sample to decay to half its initial mass. A) 0.94 B) 0.5 C) 0.125 D) 0.06
D) 0.06
300
A 70 kg man lifts a 12 kg package from the floor to a table 1.2 m high in 1.4 s. The power done by the man lifting the box is : *HINT: P=W/t A) 10.3 W B) 50.4 W C) 100.8 W D) 201.6 W
C) 100.8 W
400
The attachment site for RNA polymerase on the DNA template is called the: A) Promoter B) Regulator C) Operon D) Repressor
A) Promoter
400
The reaction of chlorine gas and sodium metal also produce light. How is the light produced? 2Na(s) + Cl2(g) --> 2NaCl(s) A) The electrons absorb heat energy and release it as light B) Light is emitted when the electrons become gaseous. C) Light is emitted when the metal atom becomes gaseous. D) Light is emitted when the chlorine becomes atomic.
A) The electrons absorb heat energy and release it as light
400
An object of mass 3 kg is placed on one end of a vertical spring attached at the other end to a secured surface. When released the spring streches 4.0 cm from equilibrium. The spring constant k of the spring is? ** Hooke's Law: F=-kx A) 28 N/m B) 74 N/m C) 125 N/m D) 735 N/m
D) 735 N/m
500
If an enzyme is added to a solution where its substrate and product are in equilibrium what would occur? A) Additional product would be formed B) Additional substrate would be formed C) The reaction would change from endorgonic to exorgonic D) The free energy of the system would change E) Nothing; the reaction would stay at equilibrium
E) Nothing; the reaction would stay at equilibrium
500
The volume of 4.0 M sulfuric acid required to prepare 600 mL of 0.5 M sulfuric acid is: A) 30 mL B) 45 mL C) 60 mL D) 75 mL
D) 75 mL
500
A kicked soccer ball of mass 0.50 kg has a momentum of 18.5 kg m/s. The velocity of the soccer ball is: A) 3.5 m/s B) 9.3 m/s C) 37 m/s D) 46.7 m/s
C) 37 m/s