Difficult Round Grade 12

What are the parts of the ATP molecule?

• NADH, NAHPH, FADH

• stroma, grana, chlorophyll

• adenine, thylakoids, stroma

• adenine, ribose, phosphate groups

These are substances that absorb visible light; different pigments absorb light of

different wavelengths.

• Photon

• Pigments

• Chlorophyll

• Light Energy

The process of breaking down bonds between the phosphate groups; this

happens when a water molecule breaks the terminal phosphate bond.

• Oxidation

• Phosphorylation

• Reduction

• Hydrolysis of ATP

Energy is released from ATP when ____________________________.

• adenine bonds to ribose

• ATP is exposed to sunlight

• a phosphate group is added

• a phosphate group is removed

If 6.60 moles H2 are made to react with 4.42 moles N2, base from the reaction below, what is the limiting reagent?

• NH₃

• N₂

• H₂

• None

A 40.0 L tank of ammonia has a pressure of 12.7 kPa. Calculate the volume of the ammonia if its pressure is changed to 8.4 kPa while its temperature remains constant.

• 61.5 L

• 61.0 L

• 60.5 L

• 60.0 L

If a mixture of Ne and Ar has a total pressure of 1.5 atm at 296 K in a 0.5 L container, what is the partial pressure of Ne if Ar is present in a mole fraction of 0.34?

• 0.98 atm

• 0.85 atm

• 0.99 atm

• 0.84

Two trains, A and B, are travelling towards east with velocities Vb = 1.5 m/s and Vb = 2.5 m/s. What is the velocity of train B with respect to train A?

• +1.0 m/s

• -1.0 m/s

• +3.5 m/s

• • -3.5 m/s

A soccer player hits the soccer ball so that it leaves at speed V0 = 26.0 m/s at an angle 39.0 degrees. Solve for the maximum height, h reached the ball.

• 0.53 m

• 2.79 m

• 13.7 m

• 27.3 m

Melay is dragging a box of about 115 N within 1.5 m. If the angle between the force and displacement is 25°, what is the work dissipated?

• 152.3 J

• 153.2 J

• 153.6 J

• 156.3 J