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Biology
General Chemistry
Psychology/Sociology
100
The most widely-used differential stain for bacteria is: (A) the capsule stain. (B) the Gram stain. (C) the endospore stain. (D) the flagella stain.
What is (B). The gram stain is used to identify Gram-positive vs. Gram-negative cells, based on the cell wall composition of the organism.
100
Which of the following is the best explanation of the phenomenon of hydrogen bonding? A) Hydrogen has a strong affinity for holding onto valence electrons. B) Hydrogen can only hold two valence electrons. C) Electronegative atoms disproportionately carry shared pairs when bonded to hydrogen. D) Hydrogen bonds have ionic character.
What is C) Electronegative atoms disproportionately carry shared pairs when bonded to hydrogen.
100
Which of the following is not a primary function of the extrinsic eye muscles? A) Tracking moving objects B) Dilation of the pupils C) Convergence D) Saccadic eye movements
What is B) Dilation of the pupils * Extrinsic eye muscles are only responsible for mechanical movements *Saccadic eye movement= simultaneous movement of both eyes
200
All of the following are true statements about the brain EXCEPT: (A) The pons functions to link the cerebellum with the higher conscious centers. (B) The limbic system alerts the cortex of incoming stimuli. (C) The limbic system is associated with emotional responses. (D) The nuclei of cranial nerves 5, 6, 7, and 8 are located in the pons.
What is (B). The limbic system includes the limbic lobe as well as the associated subcortical nuclei. It is associated with emotional responses and the integration of olfactory information with visceral and somatic information.
200
Fe(s) + O2 (g) ---> Fe2O3 (g) In the above unbalanced redox reaction, which best describes the oxidation/reduction roles of iron and oxygen? A) Iron is oxidized, oxygen is neither reduced or oxidized. B) Iron is reduced, oxygen is oxidized. C) Iron is reduced, oxygen is reduced. D) Iron is reduced, oxygen is neither reduced or oxidized. E) Iron is oxidized, oxygen is reduced.
What is E) Iron is oxidized, oxygen is reduced. *Keep in mind that anything that combines with oxygen is usually being oxidized!
200
How would Jenny, a salesperson at an organic pre-made meals company, use the door-in-the-face technique to persuade people who do not want to subscribe to purchase the meals? A. Ask individuals if they want to subscribe to the meals for two years, and then later scale it down to a month. B. Ask individuals if they want to subscribe to the meals, and if they are interested, say that they should do so immediately because the 15% discount will end within two days. C. Ask individuals if they want to subscribe to the meals using a trial basis of one week. Once they agree, she would then ask if they want a six-month subscription. D. Ask individuals if they want to subscribe to the meals and then hand out a flyer of endorsements given by famous chefs.
What is A) Ask individuals if they want to subscribe to the meals for two years, and then later scale it down to a month. *Door in the face technique is when the requester starts with a very large appeal and more often than not will be denied
300
An unknown molecule is added to an enzyme-catalyzed reaction, immediately decreasing its rate. The addition of more substrate has no effect, but an addition of an antibody for the unknown molecule restores the initial reaction rate, what form of inhibition is most likely occurring? A) Competitive B) Uncompetitive C) Irreversible D) Feedback E) Noncompetitive
What is E) Noncompetitive inhibition
300
A chemist observing a reaction obtains the following measurements: aA + bB ↔ cC + dD ΔGº = -1,032 J/mol Rate = k[A]2[B] Which of the following must be true about this reaction? I. The reaction is third order overall II. The reaction is exothermic. III. Keq < 1 IV. The rate of reaction is very high A. I only B. II only C. I, II and III D. I, II, III and IV
What is A) I only
300
Which part of the brain is chiefly responsible for planning and problem solving? A) Frontal lobe B) Parietal lobe C) Occipital lobe D) Temporal lobe E) Cerebellum
What is A) Frontal Frontal= complex reasoning Occipital= visual Parietal= sensation Temporal= auditory and olfactory Cerebellum= balance and movement
400
Unlike eukaryotes, prokaryotes have no membrane bound organelles. How are prokaryotes able to generate energy? A) Prokaryotes do not generate energy B) Prokaryotes have specialized mitochondria C) Prokaryotes generate proton gradients across their plasma membranes
What is C) Prokaryotes generate proton gradients across their plasma membranes
400
What is true of the rate-limiting step of a chemical reaction? I. It is the slowest step. II. Cannot be altered by a catalyst or enzyme. III. Involves the transition states with the highest activation energy. IV. Is unaffected by a change in reactant concentration or reaction temperature. A) I B) I and III C) I, II, and III D) III and IV E) I, II, III, and IV
What is B) I and III * Rate limiting has the highest activation energy, and is therefore the slowest.
400
If a person is assaulted on the street of a large city in the middle of the day with many people around the likelihood that someone will call for help will decrease in relation to larger crowds. This is known as.... A) Conformity B) Self serving bias C) Groupthink D) Bystander effect E) Deviance
What is D) Bystander effect
500
Sarin is an irreversible inhibitor to the enzyme acetylcholinesterase, an enzyme that catalyzes the breakdown of the acetylcholine neurotransmitter into acetate and choline. Sarin gas may cause which of the following? A) Dilated pupils B) Loss of control of respiratory muscles C) Increased production of white blood cells D) Inhibition of peristalsis E) Reduced blood pH
What is B) Loss of control of respiratory muscles
500
A scientist dissolves salt in water, and is surprised to find that the beaker becomes hot to touch. Which of the following is likely true of this reaction? Assume the system is defined as the beaker with the solute and solvent. A) Less energy is released when hydrated ions form than is absorbed when ionic bonds break B) Equal energy is released when hydrated ions form than is absorbed when ionic bonds break C) More energy is released when hydrated ions form than is absorbed when ionic bonds break D) The reaction is strongly endothermic E) Entropy of the system must increase
What is C) More energy is released when hydrated ions form than is absorbed when ionic bonds break * Energy is always released when bonds form, and always absorbed when bonds break
500
A 24 year old male has difficulty forming healthy adult relationships. He has extreme reactions when someone disagrees with him and accuses people of abandoning or betraying him. He has an explosive temper and behaves in self destructing ways such as driving intoxicated, binge eating, and self deprecating speech. He forms unhealthy opinions of others such as making a new friend and putting that person on a pedestal and then demonizing that same person when they fail to meet his expectations. The individual exhibits symptoms of which personality disorder? A) Paranoid personality disorder B) Borderline personality disorder C) Obsessive compulsive disorder D) Schizotypal personality disorder
What is B) Borderline personality disorder