Hiring - Step 2: Chemistry Test

Chemistry Test
Email*
Hiring ID*
ID Confirmation*
Hiring ID Table*

1. On converting 25 °C, 38 °C and 66 °C to kelvin scale, the correct answer will be

298 K, 311 K and 339 K298 K, 300 K and 338 K273 K , 278 K and 543 K298 K ,310 K and 338 K

2. The final product of the Calvin cycle is

RuPBPGAATPG3P

3. Photosynthesis takes place in the membranes of small sacs called

thylakoidsgranaphotosystemsphotons

4. The dark reaction in photosynthesis is limited by

CO2, temperature, and lightCO2, light, and waterwater, temperature, and CO2oxygen, water, and temperature

5. Colors of light most useful in photosynthesis are

green, yellow, and orangered, violet, and blueinfrared, red, and yellowred, white, and blue

6. During what stage of photosynthesis is O2 produced?

cyclic photophosphorylationthe light-dependent reactions involving photosystems I and IIcarbon fixationdidn't theythe Krebs cycleO2 is not produced during photosynthesis

7. The pigment molecules responsible for photosynthesis are located in the

mitochondriacytoplasm of the cellstroma of the chloroplastthylakoid membrane of the chloroplastall of the above

8. Both carotenoids and chlorophylls

are pigmentsabsorb photons of all energy rangescontain porphyrin ringsall of the abovenone of the above

9. Which of the following is the correct sequence for the movement of electrons during the light-dependent reactions of plants?

P680 à P700 à water à NADP+water à P700 à NADP+à P680P700 à P680 à NADP+à waterP680 à water à P700 à NADP+water à P680 à P700 à NADP+

10. What pigment is used in human vision

chlorophyll abeta-caroteneretinalvitamin Aferredoxin

11. During what stage of photosynthesis are ATP and NADPH converted to ADP + Pi and NADP+?

the light-dependent reactionsthe light-independent reactionsboth of the abovenone of the above

12. Water vapor exits and CO2 enters a leaf through the

stomatagranaporphyrin ringsphotonsstroma

13. Which of the following organisms have the greatest problem with photorespiration?

C4 plantsheterotrophsC3 plantsCAM plantspurple sulfur bacteria

14. What energy-rich organic compound is produced as a result of the Calvin cycle?

NADPHCO2, light, and waterATPH2Oglucose

15. High-energy photons

have long wavelengthshave short wavelengthsare more likely to produce red light than blue lightcannot be absorbed

16. Light that is visible to humans occupies what part of the electromagnetic spectrum?

the entire upper halfthe entire lower halfa small portion in the middlethe entire spectrumvisible light is not part of the electromagnetic spectrum

17. During photosynthesis, photons raise electrons to higher energy levels. These excited electrons belong to what compound?

H2OATPRuBPglucosechlorophyll

18. Which of the following occurs during the light-dependent reactions of plants?

electron transportchemiosmosissplitting of waterall of the abovenone of the above

19. The oxygen that is released as O2 during photosynthesis came from _____________ molecules.

carbon dioxidewaterglucosechlorophyllATP

20. Compared to retinal, chlorophyll can be described as a pigment that has a

narrow absorption range but high efficiencynarrow absorption range but low efficiencywide absorption range but high efficiencywide absorption range but low efficiency

21. The earliest photosynthesizers probably used what as a source of hydrogen?

H2SH2OCO2C6H12O6

22. How many carbon atoms are in a molecule of RuBP?

zeroonetwothreefive

23. Which of the following is mismatched?

Photosystem I - uses the P700 molecule in its photocentePGA - a 3-carbon compoundantenna complex - contains hundreds of pigment moleculesCAM plants - open their stomata during the day and close them at night to avoid photorespirationC4 plants - expend ATP to concentrate CO2 in bundle-sheath cells to avoid photorespiration

24. Which of the following statements about photosynthesis is true?

the light-dependent reactions can occur only in the light, the light-independent reactions only in the darkphotorespiration is more efficient at producing glucose than is photosynthesisthe light-dependent reactions produce the energy-rich compounds that are used to run the light-independent reactionsall of the above are true

25. Which of the following statements accurately describes the relationship between photosynthesis and cellular respiration?

photosynthesis occurs only in autotrophs; cellular respiration occurs only in heterotrophsphotosynthesis uses solar energy to convert inorganics to energy-rich organics; respiration breaks down energy-rich organics to synthesize ATPphotosynthesis involves the oxidation of glucose; respiration involves the reduction of CO2the primary function of photosynthesis is to use solar energy to synthesize ATP; the primary function of cellular respiration is to break down ATP and release energyphotosynthesis and cellular respiration occur in separate, specialized organelles; the two processes cannot occur in the same cell at the same time

26. In sulfur bacteria, how many pigment electrons must get transported during cyclic photophosphorylation to produce one molecule of ATP?

onetwothreefourfive

27. Production of one molecule of 3-phosphoglyceraldehyde requires how many turns of the Calvin cycle?

123612

28. To reduce six molecules of carbon dioxide to glucose via photosynthesis, how many molecules of NADPH and ATP are required?

6 NADPH and 6 ATP12 NADPH and 12 ATP12 NADPH and 18 ATP18 NADPH and 12 ATP24 NADPH and 18 AT

29. The primary form of sugar transported from the site of photosynthesis to the rest of the plant is:

glyceraldehyde 3-phosphateglucosefructoseribulose 1,5-bisphosphatesucrose

30. The immediate products of C3 and C4 photosynthesis are, respectfully:

ribulose 1,5-bisphosphate; malic acidmalate; carbon dioxide3-phosphoglycerate; oxaloacetic acidglyceraldehyde 3-phosphate; phospho-enol-pyruvate (PEP)malic acid; glucose

31. Light is required for the light dependent reactions because

it is the source for electronsit splits the water moleculeit energizes electrons in the reaction centerit splits ATP molecules which generates the energy necessary to power the light independent reactionsnone of the above

32. What is the correct order of events in a negative feedback loop?

Sensor, Integrator, ResponseStimulus, Effector, Integrator, Sensor, ResponseStimulus, ResponseStimulus, Sensor, Integrator, Effector, ResponseSensor, Integrator, Effector, Response

33. Light-driven electron transport in the chloroplast pumps H+ into the intermembrane space between the outer and inner membranes.

truefalse

34. CO2 fixation occurs within the stroma.

truefalse

35. If you know the absorption spectrum of a pigment, you can predict the pigment's colour.

truefalse

36. For every CO2 molecule fixed by photosynthesis, one molecule of O2 is produced.

truefalse

37. True or False: Homeostasis is constant

TrueFalse

38. True or False: The Distal Convoluted Tubule in the nephron is hypoosmotic to isoosmotic.

TrueFalse

39. True or False: The Ascending Loop of Henle acts as a sodium pump.

TrueFalse

40. True or False: In the kidneys, fluid moves in through the renal vein.

TrueFalse

41. True or False: Na+ crystals cause kidney stones.

TrueFalse

42. True or False: Electrical synapse involves sending an electrical impulse across gap junctions.

TrueFalse

43. True or False: Summation is when two inputs create one action potential.

TrueFalse

44. True or False: The gyri in the brain are "hills" and the suculi are "valleys"

TrueFalse

45. Choose the correct statement of the following

conversion of solid into vapours without passing through the liquid state is called vapourisation.conversion of vapours into solid without passing through the liquid state is called sublimation.conversion of vapours into solid without passing through the liquid state is called freezing.conversion of solid into liquid is called sublimation.

46. Rusting of an article made up of iron is called

corrosion and it is a physical as well as chemical changedissolution and it is a physical changecorrosion and it is a chemical changedissolution and it is a chemical change

47. Which of the following are homogeneous in nature?

ice and soilwood and airice and airsoil and air

48. Following are a few definitions of osmosis. Read them carefully and select the correct definition

Movement of water molecules from a region of higher concentration to a region of lower concentration through a semipermeable membraneMovement of solvent molecules from its higher concentration to lower concentrationMovement of solvent molecules from higher concentration to lower concentration of solution through a permeable membraneMovement of solute molecules from lower concentration to higher concentration of solution through semipermeable membrane

49. Which among the following has specialised tissue for conduction of water?

ThallophytaBryophytaPteridophytaFungi

50. What's the lightest element in the periodic table?

HeliumHydrogenAirNeutrons

51. What is the atomic number of carbon

261214

52.Which element in the periodic table was named in honour of physicist Albert Einstein?

AlbertiumRelativiumPhysicsiumEinsteinium

53. Which of the following is a noble gas?

NitrogenOxygenArgonCarbon dioxide

54. A liquid has:

a defined volume, but no defined shapea defined shape and volumea defined shape, but not a defined volumeneither a definite shape nor volume

55. What is the function of the pons?

Planning and personality.Sensory associations and language.Connect the brain hemispheres.Visual memory.Connect the medulla and cerebellum.

56. Proteins are made from::

fatty acidsamino acidsnucleic acidssimple sugars

57. One of the products of photosynthesis in plants is:

waterfructoseglucosechlorophyll

58. A mole is the number of atoms in:

12 grams of carbon-121 milliliter of water1 gram of hydrogen12 grams of carbon-14

59. The invention of the modern periodic table is usually credited to:

BohrMendelMendeleevEinstein
Points
Score %
Should be Empty: