Describe how the meniscus is used to read volume measurements on a graduated cylinder.
Read the volume at eye level at the bottom of the meniscus. The meniscus is the curved surface of the liquid, and reading its lowest point gives the most accurate measurement.
Explain why the several different types of microscopes are all necessary.
Several types of microscopes are necessary because no single microscope can show every kind of specimen in the same way. Light microscopes can view living cells, while electron microscopes provide much greater magnification and resolution; scanning electron microscopes show surfaces, and transmission electron microscopes show internal structures.
What are the two pieces of safety equipment used to respond to fires in the lab?
The two pieces of equipment are a fire blanket and a fire extinguisher.
An experiment looking at structures smaller than a cell would most likely employ a _______.
A balance is best used to measure a sample’s _______.
What feature is common to all microscopes, and how is this feature related in the word "microscope"?
All microscopes have a magnifying and focusing system, usually lenses, that allows objects to be viewed in greater detail. “Microscope” means an instrument for viewing (“scope”) very small (“micro”) objects.
Which of the following pieces of laboratory equipment is not directly used to make measurements?
Which of the following pieces of lab equipment is used to protect eyes?
Which of the following is the best explanation for why it is important to follow lab safety guidelines?
Why is it important for a researcher to know all safety procedures and where all safety equipment is stored even if they never have an accident?
Knowing the safety procedures and the locations of safety equipment helps a researcher prevent problems and respond quickly if an emergency occurs. Quick action can reduce injuries, damage, and exposure to hazards.
Did you find these answers helpful?