Macromolecules, Water, and Membrane Transport

You have started a new workout routine and need more energy during the day. What macromolecule would be most beneficial to you?

• Proteins

• Carbohydrates

• Lipids

• Nucleic acids

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Why does carbon make a good backbone for macromolecules?

• It can form 4 bonds

• It can form 2 bonds

• It can form 8 bonds

• It can form a single bond.

The image shows a chain of amino acids, does this show a

• Monomer

• Polymer

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You consume food with a fat that contains no double bonds, what type of lipid have you consumed?

• Phospholipid

• Unsaturated Fat

• Steroid

• Saturated Fat

Why are Nucleic Acids not included on the label?

• They are only used for structure

• They are used for fighting disease

• They are used to store genetic information

• They are used for energy only

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What elements are found in a protein. Select all that apply.

• Carbon

• Nitrogen

• Phosphorus

• Oxygen

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What part of a cell membrane prevents large polar and ionic molecules from entering the cell?

• Polar heads

• Channel Protein

• Carrier Protein

• Nonpolar tails

How are large polar molecules able to enter a cell?

• Through simple diffusion

• Through a channel protein in facilitated diffusion

• Only through a carrier protein in active transport

• By moving from areas of low concentration to areas of higher concentration

The graph shows the percentage change in mass of a bag filled with a sucrose solution placed in various concentrations of sucrose. At what concentration in the graph, would the solution be considered isotonic?

• 0.25 M

• 0.42 M

• 0.63 M

• 0.80 M

The area around your heart muscle cells have a high calcium concentration. However, a buildup of calcium in your heart muscle is very dangerous. What can be done to remove calcium for your heart muscle cells.

• Use a channel protein for facilitated diffusion

• Use passive diffusion to remove calcium

• Use osmosis to adjust water levels

• Use energy to move calcium through active transport

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