Cells Review Do Now

Peptide bonds in proteins can be broken down by the enzyme peptidase. Adrian orders a hamburger and French fries for lunch. He adds cheese and mayonnaise to his hamburger and then sits down to eat lunch with his friends. Which structure would most likely result from the action of peptidase in Adrian’s stomach?

• Lipid
• Glucose
• Nucleic Acid
• Amino Acid

Which organic macromolecules are composed of chains of amino acids that join to form the structural components of organisms.

• Carbohydrates
• Lipids
• Nucleic Acids
• Proteins

People who have Alzheimer's disease experience an increasing loss of brain function and cognition over time. Alzheiner's is characterized by a buildup of abnormal protein fragments that damage brain cells. Recently scientists have discovered an enzyme, BACE2, that decreases these abnormal protein fragments in the brain of a person with Alzheimer's disease.Which statement explains how BACE2 most likely works?

• BACE2 breaks down into smaller pieces that react with the abnormal protein fragments, forming more complex molecules.
• BACE2 speeds up the reaction that breaks down the abnormal protein fragments.
• BACE2 molecules link several abnormal protein fragments together, forming a complete protein.
• BACE2 is a reactant that combines with the abnormal protein fragments.

True or false: Eukaryotes have a nucleus

• True
• False

Which of the following organelles are present in both eukaryotes and prokaryotes?

• mitochondria, chloroplast
• cell membrane, nucleus
• cell membrane, ribosome
• mitochondria, ribosome