Biology Quiz on Micropipettors and More

Which micropipettor would you use to measure 150 µL of liquid?

• A. P10

• B. P20

• C. P200

• D. P1000

Why must disposable tips be used with micropipettors?

• A. To prevent wear and tear on the micropipettor.

• B. To prevent contamination between samples.

• C. To ensure precise volume measurements.

• D. All of the above.

What is the purpose of the first stop on a micropipettor?

• A. To expel liquid completely.

• B. To aspirate liquid.

• C. To attach the tip.

• D. To adjust the volume.

What is the total magnification of a microscope with a 10x ocular lens and a 40x objective lens?

• A. 40x

• B. 400x

• C. 4000x

• D. 10x

Which organelle is stained green by Janus Green B?

• A. Nucleus

• B. Chloroplast

• C. Mitochondria

• D. Amyloplast

What distinguishes plant cells from animal cells under a microscope?

• A. Presence of a nucleus.

• B. Lack of membrane-bound organelles.

• C. Presence of a cell wall and chloroplasts.

• D. Larger size of animal cells.

What gas is produced during fermentation in yeast?

• A. Oxygen

• B. Nitrogen

• C. Carbon dioxide

• D. Methane

Tags

NGSS.HS-LS2-3

What role does amylase play in fermentation experiments?

• A. Breaks down starch into sugars.

• B. Provides energy to the yeast.

• C. Acts as a catalyst for CO₂ production.

• D. Reduces fermentation efficiency.

What is the expected result when yeast is treated with starch + amylase compared to starch alone?

• A. Slower fermentation due to less sugar availability.

• B. Faster fermentation due to glucose availability.

• C. No difference in fermentation rate.

• D. Yeast cannot ferment in the presence of amylase.

What does a dark area on a starch print indicate?

• A. High chlorophyll concentration.

• B. High starch concentration due to photosynthesis.

• C. Low starch concentration.

• D. Dead leaf tissue.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3