General Biology
All of the following are components of the Cell Theory EXCEPT the idea that
a. all living things are composed of cells.
b. all living things contain mitochondria.
c. cooperation among cells allows for complex functioning in living things.
d. all cells arise from pre-existing cells.
B. all living things contain mitochondria.
What is the role of histamine in the immune response?
a. To reduce a fever
b. To reduce inflammation
c. To dilate the blood vessels
d. To recruit immunoglobulin
C. To dilate the blood vessels
The change in energy that occurs when an electron is added to an atom is known as the
a. electronegativity.
b. metallic character.
c. electron affinity.
d. ionization energy.
C. electron affinity.
Which of the following are considered terminal functional groups?
a. Aldehydes
b. Ketones
c. Carboxylic acids
d. Both A and C
D. Both A and C
What is the cost of a blouse that is priced at $50.00 with a tax of 7%?
a. $35.00
b. $50.35
c. $53.50
d. $85.00
C. $53.50
In glucose catabolism
a. oxygen must be the final electron acceptor.
b. oxygen is necessary for any ATP synthesis.
c. inorganic phosphate is produced.
d. ATP is generated.
D. ATP is generated.
When a sensory receptor receives a threshold stimulus, it will do all of the following EXCEPT
a. become depolarized.
b. transduce the stimulus to an action potential.
c. inhibit the spread of action potential to sensory neurons.
d. cause the sensory neuron to send action potentials to the central nervous system.
C. inhibit the spread of action potential to sensory neurons.
Which of the following sets of molecules contains only nonpolar species?
a. BH3, NH3, AlH3
b. NO2, CO2, ClO2
c. HCl, HNO2, HClO3
d. BeH2, BH3, CH4
D. BeH2, BH3, CH4
Which of the following will NOT show optical activity?
a. (R)-2 butanol
b. (S)-2-butanol
c. A solution containing 1M (R)-2-butanol and 2M (S)-2-butanol
d. A solution containing 2M (R)-2-butanol and 2M (S)-2-butanol
D. A solution containing 2M (R)-2-butanol and 2M (S)-2-butanol
When 3x3-7x+7 is divided by x+2, the remainder is:
a. -5
b. -3
c. 1
d. 3
B. -3
A woman with blood genotype IAi and a man with blood genotype IBi have two children, both type AB. What is the probability that a third child will be blood type AB?
a. 25%
b. 33%
c. 50%
d. 66%
A. 25%
When a muscle fiber is subjected to very frequent stimuli
a. an oxygen debt is incurred.
b. a muscle tonus is generated.
c. the threshold value is reached.
d. a simple twitch is repeatedly generated.
D. a simple twitch is repeatedly generated.
Acetylene, used as a fuel in welding torches, is produced in a reaction between calcium carbide and water:
CaC2+ 2 H2O ---> Ca(OH)2 + C2H2
How many grams of C2H2 are formed from 0.400 moles of CaC2?
a. 0.400
b. 0.800
c. 4.00
d. 10.4
D. 10.4
The four C-H bonds of CH4 point toward the vertices of a tetrahedron. This indicates that the hybridization of a carbon atom is
a. sp.
b. sp2.
c. sp3.
d. none of the above.
C. sp3.
A certain circular stopwatch has exactly 60 seconds marks and a single hand. If the hand of the watch is randomly set to one of the marks and allowed to count exactly 10 seconds, what is the probability that the hand will stop less than 10 marks on either side of the 53-second mark?
a. 1/6
b. 19/60
c. 1/3
d. 29/60
Homologous structures are
a. similar in function but not in origin.
b. similar in origin but not necessarily in function.
c. completely dissimilar.
d. found only in mammals.
B. similar in origin but not necessarily in function.
All of the following facilitate gas exchange in the lungs EXCEPT
a. thin alveolar surfaces.
b. moist alveolar surfaces.
c. differences in the partial pressures of O2 and CO2.
d. active transport.
D. active transport.
How much NaOH must be added to 200mL of water to make a 1.0M NaOH solution?
a. 8.0g
b. 16g
c. 40g
d. 80g
A. 8.0g
SN1 reactions show first-order kinetics because
a. the rate-limiting step is the first step to occur in the reaction.
b. the rate-limiting step involves only one molecule.
c. there is only one rate-limiting step.
d. the reaction involves only one molecule.
B. the rate-limiting step involves only one molecule.
Given the following complex numbers, find the product.
z= -5+6i w=3-2i
a. 4+30i
b. -7-14i
c. 9-46i
d. -3+28i
D. -3+28i
Which of the following is the correct definition of transduction?
a. Direct transfer of genetic material between bacterial cells.
b. Infection with genetic material via a phage.
c. Acquisition of genetic material from the environment.
d. Reproduction via binary fission.
B. Infection with genetic material via a phage.
The intestinal capillaries transport nutrients from the intestines to the
a. large intestine.
b. liver.
c. kidney.
d. heart.
B. liver
According to chemical kinetic theory, a reaction can occur
a. if the reactants collide with the proper orientation.
b. if the reactants possess sufficient energy of collision.
c. if the reactants are able to form a correct transition state.
d. for all of the above.
D. for all of the above.
Which of the following is true about E2 reactions?
a. They are greatly affected by steric hindrance.
b. They need a strong base to abstract the proton.
c. They are favored over SN2 by weak Lewis bases.
d. They are favored over SN1 and E1 by polar solvents.
B. They need a strong base to abstract the proton.
What is the slope of the curve y=4x5+3x2+1 at x=2?
a. 332
b. 234
c. 568
d. 184
A. 332