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Biophysics - Part 3
1
of
25
💡
Hints:
3
Q1. Given three vectors:A = 10m, N; B = 15m, E;C = 12m, N.What is the magnitude of the resultant vector of A + B+ C? (rounded to whole numbers)
A. 27
B. 29
C. 5
D. 37
Q2. DNA absorbance can be taken at wavelength?
A. 220 nm
B. 240 nm
C. 160 nm
D. 260 nm
Q3. If 68 Joules were necessary to move a 4 Newton crate, how far was the crate moved?
A. 272 m
B. 17 m
C. 4.05 m
D. 272 cm
Q4. Which of the following gases is unsuitable for use as a GC carrier gas
A. Nitrogen
B. Helium
C. Oxygen
D. Inert
Q5. If 150 Joules of work is needed to move a box 10 meters, what force was used?
A. 1500 N
B. 15 N
C. 1.5 N
D. 150 N
Q6. Which of the following measurement describes an actual vector quantity?
A. 3s to the left
B. 4m distance
C. speed of 30.5 m/s
D. 47 km/h, North-north-west
Q7. Displacement is
A. Total length of the path traveled
B. Location of an object relative to a defined zero point
C. How far an object is from its start ing point
D. Non of this
Q8. What happens when unbalanced forces act on an object at rest?
×
A. The object remains at rest
B. The object begins moving in an unpredictable direction
C. The object begins moving in the direction of the net force
D. The object begins moving opposite to the direction of net force
Q9. The average pH of urine is
A. 5.6
B. 6.0
C. 6.4
D. 6.8,
Q10. What is force?
A. A force is a push or a pull upon an object resulting from the object’s interaction with another object.
B. something used in Star Wars
C. It is the amount of space between two points.
D. It is Superman’s power
Q11. The osmotic pressure of a solution relating to solute molecules depends on the
A. Size
B. Shape
C. Number
D. Volume.
Q12. It is used as a simplified version of a physical system that would be too complicated to analyze in full detail.
A. model
B. artist
C. sample
D. unit
Q13. NMR spectroscopy is
A. Diffraction
B. Absorption
C. Radiation
D. Emission
Q14. Which of the following has the same value as 25 mm?
A. 0.25 m
B. 250 cm
C. 2.5 cm
D. 2.5 m
Q15. Balanced or Unbalanced?
×
A. Balanced
B. Unbalanced
Q16. Bile salts make emulsification with fat for the action of
A. Amylase
B. Lipase
C. Pepsin
D. Trypsin
Q17. A mixed fermentation is one, which produces
A. both alcohol and carbon dioxide
B. both acid and cyarbon dioxide
C. both acid and alcohol
D. several different kinds of acid
Q18. In which of the following electrovalent compound both cation and anion represent the same inert gas configuration?
A. Calcium bromide.
B. Magnesium chloride
C. Strontium oxide
D. Potassium sulfide
Q19. In animal cell bioreactor, bubble damage can be minimized by
A. the addition of a shear protectorant
B. using a bubble free oxygen delivery system
C. headspace aeration
D. all of the above
Q20. The nature of a solution depends on its H3O+ ,pH
A. [H3O+]
B. [H3O+] and [oH+]
C. [H3O+]
D. none of these
Q21. It is any number that is used to describe a physical phenomenon quantitatively.
A. International System
B. unit
C. mathematical language
D. physical quantities
Q22. Who invented mass spectrometers?
A. J.J. Thompson
B. Goldstein
C. Nikola Tesla
D. Aston
Q23. 250 000 m can be simplified as:
A. 2.5 km
B. 2.5 Mm
C. 250 km
D. 250 Mm
Q24. The substance in the mixture that has the greatest affinity for the stationary phase will travel
A. fastest
B. slowest
Q25. Which of them gave the law of Buoyancy?
A. Ohm
B. Avagadro
C. Newton
D. Archimedes
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