Kelly arrives late for a music concert. what should she do? a. wait until the break to take her seat. b. take a vacant seat on the last row. c. excuse herself and get to her seat immediately without shoving. d. ask other audience members to move and take her seat, so she can take the last seat.

Which class of molecules contains the amino group, nh2 (a) sugars (b) water (c) proteins (d) hydrocarbons

Explain why phospholipid molecules form a bilayer. (3 marks)

What evidence supports the law of conservation of energy? a) mechanical energy is converted to chemical energy during photosynthesis. b) oxygen is made from the breakdown of carbon dioxide during photosynthesis. c)energy is absorbed by chlorophyll and becomes chemical energy during photosynthesis. d)the sun gives off light energy that is absorbed by plants.