Lipids — Unit test Answers

Read the following excerpt about water availability to living organisms.“Water covers 75 percent of Earth. 97 percent of water on Earth is salt water. Only 3 percent of water is available as fresh water, but most of this water is locked up in solid glaciers and polar ice caps.” Based on this information, which is the best approximation of the amount of water on the planet that is available for animals to drink?

Which statement about water best illustrates the property of adhesion?

Which characteristic best distinguishes runoff and infiltration?

Which sequence of processes transports water from the atmosphere to the ocean and then back into a cloud?

Which statement best describes how a catalyst can speed up a chemical reaction?

If the last carbon atom of an unsaturated fatty acid is bonded to two hydrogen atoms and one carbon atom, what type of bond must exist between the last carbon and the other carbon atom?

Lactase and carbonic anhydrase are examples of what type of substance?

Which example illustrates adhesion?

People with diabetes often receive insulin injections. What effect does insulin have on the body?