Lab Quiz 1 Metric Measurement And Microscopy

Front 1

mm to cm

Back 1

There are 10 millimeters in 1 centimeter.

Front 2

Advantages of metric system over English system

Back 2

There is one unit of measurement for each physical quantity, scalability is by prefixes, and decimal system

Front 3

Part of the microscope that regulates the amount of light

Back 3

Adjustable diaphragm

Front 4

Which objective lens allows you to see the greatest number of cells in the field of view

Back 4

The scanning objective/ low power, because it provides a larger field of view

Front 5

Which of the following molecules are inorganic? C2H6, C2H2, CO2, H2O, NH3, or CH4

Back 5

CO2`

Front 6

Draw structure for C2H6

Back 6

There are two C's bonded together with 3 H's coming off of each C

Front 7

Explain why water drops on a penny pile high

Back 7

Cohesion, water molecules bond together and didn't want to separate

Front 8

Explain why oil layers on top of water

Back 8

Oil is less dense and was above water, and it is not attracted to water through the polarity

Front 9

Describe the test used to identify starch in food

Back 9

The iodine test, which is when you take 5 mL of the sample and add 5 mL of iodine to it and shake the test tube and identify the results. If it turned to black, it was there. If it turned to brown or dark red it wasn't.

Front 10

Define hypertonic, hypotonic, and isotonic

Back 10

Hypertonic is when there is more solution on the outside of the cell than inside. Hypotonic is when there is less solution on the outside of the cell than inside. And Isotonic is when the solution is equal on both sides

Front 11

Describe the relationship between catalase and hydrogen peroxide. Indicate which is the enzyme, substrate, and what occurs during the reaction (equation)

Back 11

A decomposition reaction occurs during the reaction, the catalase speeds up the breakdown of hydrogen peroxide into oxygen and water. The catalase is the enzyme, the substrate is the hydrogen peroxide. 2 H2O2 goes to 2 H2O + O2

Front 12

Explain why it is important for cells to be small using our diffusion and osmosis lab.

Back 12

It is important for cells to be small so that they can get information across accordingly. If they were too big then information wouldn't be able to get across quickly enough to accommodate the size.