Missed Questions Flashcards
What factors remains constant in a circuit when a dielectric is inserted between the capacitor?
Voltage will remain the same
Capacitor will change by a factor of k
Q will change by a factor of k
PE will change by a factor of k
Pascal’s Constant for Hydraulic Lift
(Force and Area)
A1F1=A2F2
Gauge Pressure
Gauge pressure is only depends on the density of the fluid and the depth of the object in that fluid
How to calculate current?
Q/t
Q Charge in C
T time in A
Resistance is dependent on what factor?
Resistance is only dependent on the material
Chromatography Employs to Phases
Stationary allows compounds to be retained (greater affinity)
mobile phase carried mixture to be separated
Homozygous vs Heterozygous
The friction present in a ratchet system would have what effect on the experimental results?
The calculated muzzle velocity will be less than the actual muzzle velocity.
If the fifth we’re attempted using a bullet of mass 30g, the experimentalists could expect the block to swing up to the height of:
Answer: 170cm
The data in the table suggests that the height h is approximately proportional to m^2. Going from trial 1 to trial to m increases by a factor of 2 and h increases by a factor of 2^2= 4. From trial 1 to trial 3, increases by almost a factor of 3^2=9. If m increases by a factor of 3 (m=10g to m=30g), then h should increase almost by a factor of 3^2=9, to (20cm) * 9= 180cm
At Pext > 700 atm, which of the following is possible for a sample of one of the real gases given in Figure 1?
Answer: V (ideal) is less than the total molecular volume.
Increased intermolecular attractions cause the ratio PV/(RT) to decline because individual molecules:
Answer: lose kinetic energy to potential energy and strike the side of the container with less force.
Intermolecular attractions increase potential energy between molecules, decreasing kinetic energy.
FSQ: In a facultative anaerobe, which of the following processes occurs under both aerobic and anaerobic conditions?
Answer: glycolysis
1-Methylcyclohexanol reacts with HBr to form 1-bromo-1-methylcyclohexane. The mechanism for this reaction is likely to be an:
Answer: SN1 reaction
Nucleophilic substitution reactions: SN1 and SN2
The standard potential for the reaction K^+ + e^- > K(s) equals -2.93V, as referenced against 2H^+ + 2e^- > H2 (set to 0.0V by definition). If solid potassium is placed into an aqueous solution of HCL, then:
Answer: H2(g) and KCL(aq) are produced
An object is floating in a fluid of 1.5 specific gravity. If the volume of the fluid displaced by the floating object is 5*10^-3 m^3, what is the objects mass?
Answer: 7.5 kg
Can glucogenic amino acids be converted into glucose?
Answer: Yes: pyruvate and Krebs cycle intermediates can be converted into oxaloacetate, then phosphoenolpyruvate, which can enter gluconeogenesis.
At physiological pH, the amino acid with the formula C4H7NO4 has:
Answer: Two deprotonated carboxylic acid groups and is glucogenic.
Tooth enamel subjected to a tensile stress equal to 8.2*10^6 N/m^2 will undergo a fractional change in length of:
Answer: 0.02%
When a material that obeys Hooke’s law is stretched, it’s change in length, x, is directly proportional to the strength of the force of elongation, F, according to the equation F=kx. Which of the following expressions is equal to the Hooke’s law constant, k?
Answer: YA/l (intial)
Dentin and cortical bone samples of identical width and length are subjected to separate stretching forces and undergo the same change in length. If the width of the cortical bone sample decreases by 4*10^-5 m, by how much will the width of the Denton sample decrease?
Answer: 8*10^-5 m
How much heat was evolved when 4.0g of NaOH was added to 100 mL of the water?
Answer: 13/10*4.5 kJ
If trial 2 were performed with 25 mL of NaOH instead of 50 mL, the resulting solution would have:
Answer: pH < 1
The serotonin transporter (or SERT) removes serotonin from the synaptic cleft and recycles it back into the presynaptic cell. It thus terminates the effects of serotonin and this mechanism has been targeted in treatments for alcoholism, clinical depression, obsessive compulsive disorder, and hypertension. SERT spans the plasma membrane 12 times and is also a:
Answer: protein with twelve transmembrane domains, each of which is an alpha-helix with no proline and external hydrophobic residues, stabilized by hydrogen bonds.
Based on the TTSP results described in the passage, how might the researchers explain a given participant’s high number of total errors?
Answers: Atrophy of the frontal lobe
Which of the following would represent the most significant confounding variable in this study?
Answer: inclusion of participants diagnosed with dementia
According to self-determination theory, which proposes that people will seek autonomy, competence, and relatedness throughout their lifespans, the oldest participants in the study would most likely:
Answer: emphasize that any decisions to limit their respective driving privileges are self-endorsed
If one woman in a small and isolated Korean village fell I’ll with shin-byung, and then her close friend also began experiencing similar symptoms, claiming that she too was being pursued by spirits, which of the following might explain this occurrence regarding the friend?
Answer: Conformity followed by private acceptance
Stereotype threat is closely related to ultimate attribution errors. A white female is teaching high school social studies to a group of students who are racially and ethnically diverse. Which of the following statements is LEAST supported by the concept of the ultimate attribution error?
Answer: a black female does poorly on a quiz about capitals, and the teacher assumes that she had been unable to adequately study the night before.
Researchers found that people with graduate or professional degrees were divorced less often than were those with other levels of education. Therefore, it is possible that the success of a marriage depends on:
Answer: Cultural capital
Marriage has distinct purposes in modern societies, and all of the following are considered manifest functions of marriage in most developed societies EXCEPT:
Answer: the condemnation of adulterous actions
Which of the following can be concluded from the results of the study presented in the passage?
Answer: I, II, and III
Which of the following is most consistent with the results of the study described in the passage?
Answer: A woman who has recently moved out of her parents’ home experiences a large increase in her emotional stability.
Answer: Students paid $1 were more likely to change their opinions because of cognitive dissonance.
Which reinforcement schedule is defined as reinforcing a behavior after an unpredictable number of responses?
Answer: Variable-ratio
Which of the following statements primarily differentiates between schizophrenic behavior and schizoid affect?
Answer: Schizophrenic exhibit psychotic behaviors and schizoids withdraw from interactions with others.
Sam fails a math test despite the fact that she studied for many weeks for the test. Doing well in math is important to Sam, but it is not important to her family and friends. Sam is disappointed in herself, but accepts her score and does not incorporate her failure into her self-concept. Sam is probably:
Answer: From an Eastern culture
Some researchers failed to assess the culture of the participants in the study they were conducting. This could be particularly problematic if the researchers were studying which of the following phenomena?
Answer: cognition dissonance
Answer: I only
All of the following are involved in proprioception, EXCEPT:
Answer: baroreceptors
Moro reflex
Babinski reflex
Stepping reflex
Rooting reflex
In Graves’ disease, thyroid-stimulating immunoglobulins (TSI) contain an active site that can mimic the active site of TSH to stimulate thyroid hormone production. One would expect TSI to cause:
Answer: an increase in thyroid glad size because of the tropic effect of TSH
A mutation in the thyroid hormone receptor which blocks hormone binding would cause which of the following?
Answer: Elevated secretion of TRH
Goiter development resulting from iodine deficiency is most likely due to:
Answer: High levels of TSH
An ectopic TSH-secreting tumor is suspected in a hyperthyroidic (high thyroid-hormone concentration) patient with goiter. Administration of a high dose of thyroid hormone confirms this, due to the fact that:
Answer: [TSH] in the systemic circulation remains high.
The oocytes used in the research study in passage were:
Answer: diploid cells arrested in prophase 1
In addition to sister chromatid cohesion, cohesion complexes play an important role in:
Answer: Synapsis
Which of the following do not occur at the placenta?
Answer: I and II only
In transposition of the great arteries, a congenital birth defect, the aorta of the new born is connected to the right ventricle and the pulmonary artery is attached to the left ventricle. This would result after birth in circulation of:
Answer: deoxygenated blood through the systemic vasculature and oxygenated blood through the pulmonary vasculature
