Mid Term Lab (BIO101)

Eukaryotic. cells will be measured best in what unit of measurement?

• km

• mm

• m

• 

In the metric system. all conversion, whether volume, weight, or. length are in multiples of

• 1

• 5

• 10

• 100

A lab group decide tot est what factors of osmosis in an animal cell by exposing a decalcified egg to two different solutions. One is pure 100% distilled water and the other 100% simple syrup. The mass of each egg is measured before they are put into a single solution for 90 minutes. The mass of th eeggs is then measured and the data recorded in the data table(see figure)

In this experiment, the independent variable they are testing is

• Weight loss (-) or gain(+)

• The amount of time soaked

• Weight after soaking in water

• The type of solution the egg is placed in

A lab group decided to test what factors of osmosis in an animal cell by exposing a decalcified egg to two different solutions. One is pure 100% distilled water and the other 100% simple syrup. The mass of each egg is measured before they are put into a single solution for 90 minutes. The mass of the eggs is then measured and the data is recorded in the data table(see figure)

In this experiment, the dependent variable they are testing is

• Weight loss (-) or gain(+)

• The amount of time soaked

• Weight after soaking in water

• The type of solution the egg is placed in

A lab group decided to test what factors of osmosis in an animal cell by exposing a decalcified egg to two different solutions. One is pure 100% distilled water and the other 100% simple syrup. The mass of each egg is measured before they are put into a single solution for 90 minutes. The mass of the eggs is then measured and the data is recorded in the data table(see figure)

If the hypothesis for this experiment was "If an egg is placed in simple syrup, then it will gain weight, would you have to support or reject your hypothesis based on the data (see figure)

• Support

• Reject

• Not enought information shown in the data table

What ion is at a highter concentration in solution of low pH (0-7)?

• OH-

• Na+

• Cl-

• H+

What is the pH of distilled water?

• 3

• 5

• 7

• 10

• 14

In our experiment exploring the effects of buffers, we found that it took ____ drops of acid to lower the pH of water containing buffer as opposed to water without buffer

• An equal number of

• A greater number of

• A smaller number of

At which pH did catecholase enzyme from the potato work the best?

• 3

• 5

• 7

• 9

• 11

Enzymes have an optimum for activity because they easily ____ when the concentrations of ions in the solution.

• break completely apart

• denature or unfold

• cluster together

• dissolve