Q: You are given a temperature of $$98.6^{\circ}F$ and need to convert it to Celsius. Which formula should you use?

$$^{\circ}C = $$(^{\circ}$$F - 32) \times \frac{5}{9}$$

Question 1

Which of the following laboratory instruments is most appropriate for accurately measuring the volume of a liquid in milliliters ($$ml$$)?

Accepted Answer

Graduated cylinder

Question 2

A scientist needs to measure the mass of a small chemical sample to the nearest microgram. Which SI base unit and prefix should be used for this measurement?

Accepted Answer

Microgram ($$\mu g)$$

Question 3

You are given a temperature of $$98.6^{\circ}F$ and need to convert it to Celsius. Which formula should you use?

Accepted Answer

$$^{\circ}C = $$(^{\circ}$$F - 32) 	imes \frac{5}{9}$$

Question 4

A student measures the length of a bacterium as $$2 \mu m. $$How many nanometers ($$nm) is $$this?

Accepted Answer

$$2 \mu m = 2000 nm$$

Question 5

Which piece of laboratory equipment is best suited for grinding a solid chemical into a fine powder?

Accepted Answer

Mortar and pestle

Question 6

A solution has a pH of 4. Which statement best describes its properties?

Accepted Answer

It is acidic

Question 7

Which SI base unit is used to measure the amount of substance?

Accepted Answer

Mole

Question 8

A scientist needs to heat a liquid in a laboratory. Which equipment should be used to safely support the flask over a Bunsen burner?

Accepted Answer

Wire gauze mat

Question 9

If you have $$10$$ milligrams ($$mg) of a $$substance, how many kilograms ($$kg) is $$this?

Accepted Answer

$$10 mg = 0.00001 kg$$

Question 10

Which laboratory instrument is used to measure the hydrogen ion concentration in a solution?

Accepted Answer

pH meter

Question 11

A student needs to transfer exactly $$1.5 mL of a $$solution for a titration. Which equipment should be used?

Accepted Answer

Burette

Question 12

Which prefix in the metric system represents $$10^{-6}$$?

Accepted Answer

Micro-

Question 13

A scientist observes a specimen under a compound microscope. Which two lenses are involved in magnifying the image?

Accepted Answer

Objective lens and eyepiece lens

Question 14

Which of the following is a derived SI unit?

Accepted Answer

Meter per second ($$m/s)$$

Question 15

A student needs to measure the temperature of a solution in a biology experiment. Which unit should be used according to the metric system?

Accepted Answer

Celsius ($$^{\circ}C)$$

Question 16

Which laboratory equipment is most appropriate for growing bacterial cultures?

Accepted Answer

Petri dish

Question 17

A solution is measured with a pH meter and found to have a pH of 9. What does this indicate about the solution?

Accepted Answer

It is basic

Question 18

Which of the following is NOT a fundamental SI unit?

Accepted Answer

Liter

Question 19

A scientist needs to transfer a single drop of liquid to a slide for microscopic examination. Which tool should be used?

Accepted Answer

Dropper

Question 20

A paper is measured to be $$10 cm $$long. Convert this length to meters ($$m) $$and millimeters ($$mm).$$

Accepted Answer

$$10 cm$$ $$= 0.1 m $$and $$100 mm$$

Measurement and Lab Equipment Basics in Biology

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