Biology Steve Stein

What macromolecule is this a picture of?

• Carbohydrate

• Protein

• Lipid

• Nucleic Acid

What is the function of this macromolecule?

• quick energy

• long term energy storage

• build structure, help speed up reactions in the body, immune support

• transmit genetic information

What organelle is this a picture of?

• Golgi complex

• Endoplasmic reticulum

• cell membrane

• nucleus

What is the MOST important macromolecule in the synthesis of proteins and why?

• Lipids which provide the short term energy for making proteins

• Enzymes which increase the activation energy needed to synthesize proteins

• Nucleic acids as they contain the genetic information to make the proteins

• Simple carbohydrates as they contain the long term energy needed for continuous protein synthesis

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A person with swollen gums rinses his mouth with warm salt water, and the swelling decreases. Which of the following has occured?

• The water in the gums has moved out of the gums due to the high concentration of salt in the solution

• The swollen gums have absorbed the salt water solution

• The saltwater solution lowers the temperature of the water in the gums allowing the gums to shrink

• The salt in the solution has moved against the concentration gradient and entered the cells of the gums

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What type of transport across the cell membrane is shown?

• Osmosis

• Facilitated Diffusion

• Passive Transport

• Active Transport

Which enzyme works best in acidic conditions?

• Pepsin

• Sucrase

• Trypsin

• all of them

Which is NOT true of enzymes?

• they increase the rate of chemical reactions

• They are reusable

• The increase the activation energy of a reaction

• They are very specific (only do 1 reaction)

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Prokaryotic and Eukaryotic cells share all of the following except?

• always unicellular

• have ribosomes

• have cytoplasm

• contain DNA

What is the function of 4?

• to modify, sort, and package substances

• to produce ATP (energy for the cells)

• to produce ribosomes

• to transport materials