Q: Answer the following question given this paragraph: Figure 3.19 A phospholipid is a molecule with two fatty acids and a modified phosphate group attached to a glycerol backbone. The phosphate may be modified by the addition of charged or polar chemical groups. Two chemical groups that may modify the phosphate, choline and serine, are shown here. Both choline and serine attach to the phosphate group at the position labeled R via the hydroxyl group indicated in green. Q: What is a molecule with two fatty acids and a modified phosphate group attached to a glycerol backbone? Choices: - carbohydrate - polymer - amino acid - phospholipid A:
A: phospholipid

Q: Answer the following question given this paragraph: In shallow water close to shore, waves start to drag on the bottom of the water. The bottomsbut not the topsof the wave slow down because of friction. This causes the waves to steepen until they break and fall over, carrying water onto the shore as surf. Q: The bottomsbut not the topsof the wave slow down because of what? Choices: - size - vibration - temperature - friction A:
A: friction

Q: Answer the following question given this paragraph: Q: What conducts nerve-like electrical signals that help integrate whole-plant function? Choices: - the stem - the stamen - the spicule - the ploem A:
A: the ploem

Q: Answer the following question given this paragraph: Another interesting feature of many cnidarians is the ability to produce light. The production of light by living things is called bioluminescence. A more familiar example of bioluminescence is the light produced by fireflies. In cnidarians, bioluminescence may be used to startle predators or to attract prey or mates. Watch this short video to see an amazing light show put on by a jellyfish at the Monterey Aquarium in Monterey, California: https://www. youtube. com/watch?v=kdufLq2P1Ag . Q: The production of light by living things is called what? Choices: - apoptosis - attenuation - bio-glow - bioluminescence A:
A: bioluminescence