COWH_LIVEQUIZ 2

Which of the following materials has the lowest resistivity at room temperature?

• Copper

• Iron

• Nichrome

• Silver

A wire of resistance 4Ω is stretched to twice its original length. What is its new resistance?

• 4Ω

• 8Ω

• 16Ω

• 2Ω

A battery of emf 12V and internal resistance 1Ω is connected to an external resistor of 5Ω. The terminal voltage of the battery is: ( HINT: Terminal voltage is the voltage across the external resistor. V=IR)

• 10V

• 11V

• 12V

• 9V

Two resistors of 6Ω and 12Ω are connected in parallel. The equivalent resistance is closest to:

• 2Ω

• 4Ω

• 8Ω

• 18Ω

A 100W, 220V bulb is connected to a 110V supply. The power consumed will be:

• 100W

• 50W

• 25W

• 75W

Which enzyme is responsible for the digestion of nucleic acids in the small intestine?

• Amylase

• Pepsin

• Nuclease

• Lipase

The function of bile in digestion is to:

• Break down proteins into amino acids

• Convert starch into maltose

• Emulsify fats to aid in digestion

• Break down nucleic acids

The hormone that stimulates the pancreas to release bicarbonate to neutralize acidic chyme in the small intestine is:

• Gastrin

• Secretin

• Pepsinogen

• Cholecystokinin (CCK)

Which of the following correctly matches the digestive enzyme to its substrate?

• Trypsin – Starch

• Amylase – Lipids

• Pepsin – Proteins

• Lipase – Nucleic acids

Which part of the digestive system is primarily responsible for the absorption of nutrients?

• Stomach

• Small intestine

• Large intestine

• Liver