Life, Personal, and Social Science
You are staining a bacteria sample to determine whether they are Gram-positive or Gram-negative. Which reagent should you use first?
Crystal violet
If you were to spot a Type 1a supernova, which of the following objects could you, with the most certainty, assume to be located most closely to the supernova?
a. A red giant
b. A white dwarf
c. A neutron star
d. A black hole
b. A white dwarf
If the length of the blades on this wind turbine doubled, what would the expected power extracted be?
a. 1⁄2 times the original
b. 2 times the original
c. 4 times the original
d. 8 times the original
e. 32 times the original
c. 4 times the original
Which of the following is a requirement in Experimental Design for the Statistics section?
a. Appropriate scale and units included
b. All data has units
c. Calculations are accurate
d. All raw data is provided
c. Calculations are accurate
Which of the following DNA strands is complementary to 5’AGGCTCAA3’ ?
a. 3’ TCCGAATT 5’
b. 5’ TCCGAGTT 3’
c. 3’ UCCGAGUU 5’
d. 3’ TCCGAGTT 5’
e. 5’ TCCGAGTT 3’
d. 3’ TCCGAGTT 5’
What type of genetic drift would the reduction of populations via DDT cause?
a. Extinction drift
b. Extinction vortex
c. Founder effect
d. Bottleneck effect
d. Bottleneck effect
What scientist is responsible for the theory of continental drift?
Alfred Wagner
All possible states of polarization for light can be represented as __. (Can be multiple answers)
a. A combination of transverse and longitudinal polarizations with phase shifts.
b. A combination of any two orthogonal polarizations with phase shifts.
c. A combination of a right circular and left circular polarizations with phase shifts.
d. A combination of horizontal linear and vertical linear polarizations with phase shifts.
e. A combination of horizontal linear and inline linear polarizations with phase shifts.
b. A combination of any two orthogonal polarizations with phase shifts.
c. A combination of a right circular and left circular polarizations with phase shifts.
d. A combination of horizontal linear and vertical linear polarizations with phase shifts.
Which of the following are not a requirement in the Data Analysis and Conclusions section in Experimental Design?
a. Appropriate Graph is provided
b. Graph properly titled and labeled
c. Data is reported in correct significant figures
d. Appropriate scale and units included
c. Data is reported in correct significant figures
What was determined to be the main cause of the bovine spongiform encephalopathy (BSE, or “mad cow disease”) outbreak in Europe that occurred in the early 21st century?
a. Ingestion of cattle remains by live cattle
b. Widespread contamination of farm water supplies with mutation-inducing substances
c. Horizontal gene transfer of mutated “prion genes” throughout cattle populations
d. Unintended side effect of a new type of antibiotic used on livestock
a. Ingestion of cattle remains by live cattle
Who is known for developing a statistical procedure for stratified analysis of case-control studies?
a. MacMahon
b. Mantel and Haenszel
c. Edward Sydenstricker
d. James Lind
b. Mantel and Haenszel
At a convergent plate boundary, what typically happens when an oceanic plate collides with a continental plate?
a. The oceanic plate subducts beneath the continental plate
b. The oceanic plate slides over the continental plate
c. The oceanic plate and continental plate repel each other
d. Both plates remain stationary
a. The oceanic plate subducts beneath the continental plate
In an RC low-pass filter, how does increasing the resistor value affect the filter's cutoff frequency and attenuation rate?
a. Increases cutoff frequency, decreases attenuation rate
b. Decreases cutoff frequency, increases attenuation rate
c. Increases cutoff frequency, increases attenuation rate
d. Decreases cutoff frequency, decreases attenuation rate
b. Decreases cutoff frequency, increases attenuation rate
How many centuries would it take for Usain Bolt to run a light-second while running at his 100m world record pace?
9.58 sec for 100m sprint
3e8 m * 9.58 sec/100 m * 1 century/3.154e9 sec = 9.11e-3 → -2
Answer: -2
A researcher decides to investigate the difference in levels of the liver enzyme AST in patients who are assigned to take Pandastatin and patients who are assigned to the placebo. She finds that the mean AST value for the 140 patients taking Pandastatin is 49 and the mean AST value for the 152 patients not taking Pandastatin is 43. Which of the following statistical tests would be the most appropriate for comparing these two patient groups?
a. ANOVA
b. T-test
c. Chi-squared
d. Median value
e. Paired t-test
f. Multiple linear regression
b. T-test
Emily, a 30-year-old, presents with a rapid, regular heart rate of 160 bpm. She is diaphoretic and anxious. An ECG shows narrow QRS complexes. What is the most likely diagnosis?
a. Hypertension
b. Tachycardia
c. Aortic Dissection
d.Microcytic Anemia
b. Tachycardia
Which of the DSOs listed below could be a planetary system or a part of one? Select all that apply.
a. HR 8799
b. WASP-39b
c. Beta Pictoris
d. TRAPPIST-1
All of them!
Given the following bonds:
H–H, O–H, S–H, F–H, At–H
a. Rewrite the bonds in order of decreasing polarity.
b. Rewrite the bonds in order of increasing bond length.
a. H–F, O–H, S–H, At–H, H–H
b. H–F, O–H, S–H, At–H, H–H
How many red blood cells would fit inside the Sun?
1.41e18 km^3 Sun volume = 1.41e27 m^3
9e-17 m^3 red blood cell volume
1.41e27 m^3 * 74% sphere packing density / (9e-17 m^3) = 1.16e43
Answer: 43
Which of the following species is most likely to benefit from an increase in edge habitat?
(a) California Fan Palm
(b) Sweet Acacia
(c) Kentucky Coffeetree
(d) Giant Sequoia
Which of the following species is most likely to suffer from an increase in edge habitat?
(a) Port-Orford Cedar
(b) Hercules’-club
(c) Bluegum Eucalyptus
(d) Yellow-poplar
(b) Sweet Acacia
(a) Port-Orford Cedar
Which of the following correctly describes the arrangement and leaf shape of the Blue Palo Verde?
a. Hand-shaped, simple, whorled
b. Spear-shaped, pinnate-compound, alternate
c. Heart-shaped, simple, opposite
d. Round, bipinnate-compound, alternate
d. Round, bipinnate-compound, alternate
What type of rocks is most common for the characteristics when both the matrix and cement are classified as Porphyritic?
a. Granulite Rock
b. Quartzite Rock
c. Gneiss Rock
d. Plutonic Rock
e. Shale Rock
d. Plutonic Rock
Which of the following would you expect to have a pH greater than 7?
a. Sodium Acetate
b. Potassium Chloride
c. Sucrose
d. All of the above
e. None of the above
a. Sodium Acetate
Solve this Xenocrypt that is a quote by Frida Kahlo.
WF TGHW KTP RYAWGYPY AW FT DNAT WP ZTXWG AWF AYFYG MC HTFNPKTC UMW XMGT.
Frequency: (A)5 (C)2 (D)1 (F)5 (G)5 (H)2 (K)2 (M)3 (N)2 (P)4 (R)1 (T)8 (U)1 (W)8 (X)2 (Y)5 (Z)1
EL ARTE MAS PODEROSO DE LA VIDA ES HACER DEL DOLOR UN TALISMAN QUE CURA
What is the powerhouse of the cell?
Mitochondria