Glucosidase Activity at Various Temperatures 200
150
Glucosidase activity
(mol/L/h)
()
100
50
70
30 40 50 60
80 90
Temperature (°C)
This graph shows the activity of an enzyme called
glucosidase. What can you conclude from these
data?
A. Glucosidase breaks down glucose substrates.
B. Glucosidase functions best around 70°C.
C. Glucosidase does not function below 70°C.
N. Glucosidase is not affected by temperature.

Which best describes red blood cells? a. they are colorless b. they protect against disease-carrying microorganisms c. they transport oxygen throughout the body d. they aid in blood clotting

How can you approximate the number of calories required to keep you in energy balance?

Sally and sue were investigating the topic of friction in science. they used a small car and a ramp as seen in the picture to test what they were learning. they knew that they slipped easily on waxed floors but not on carpet, so they decided to change the material on the surface of the ramp to see what happened. they planned to use glass, carpet, aluminum foil, and sandpaper and run the car down the ramp over each surface. what would be the best research question to guide the girls' experiment? a) does the amount of surface area affect the friction on the moving car? b) will the car travel fastest on the glass surface? c) how does the angle of the ramp affect the speed of the car? d)do rougher surfaces tend to create more friction than smooth surfaces?