1st Semester Biology Interim Review

Which function is performed by a nucleic acids?

• provide energy

• function as enzymes

• store genetic information

• form structural materials like muscles and bones

Four different types of macromolecules and their characteristics are listed below. What type of macromolecule is D?

• carbohydrate

• lipid

• nucleic acid

• protein

Tags

NGSS.HS-LS1-1

The effect of temperature on the relative rate of enzyme activity is shown.

Which statement is a valid conclusion based on the information in the graph?

• The maximum rate of human respiration occurs at about 57°C.

• The maximum rate of human digestion occurs at about 45°C.

• Growth can be controlled by the action of an enzyme.

• Temperature can influence the action of an enzyme.

Which macromolecule stores energy, insulates us, and makes up the cell membrane?

• lipids
• proteins
• carbohydrates
• nucleic acids

Which macromolecule is shown?

• lipid

• protein

• nucleic acid

• carbohydrate

Which major macromolecule is being represented in this image? 

• carbohydrate
• lipid
• protein
• nucleic acid

Which macromolecule stores energy, insulates us, and makes up the cell membrane?

• lipids
• proteins
• carbohydrates
• nucleic acids

An enzyme speeds up a reaction by

• lowering the activation energy.
• raising the activation energy.
• releasing energy.
• absorbing energy.

Tags

NGSS.HS-PS1-5

Based on the graph, what is the optimal temperature for this enzyme? 

• 15^oC
• 40^oC
• 30^oC
• 35^oC

What happens when enzymes are heated to a high temperature?

• The enzymes die.
• The shapes of the enzyme are altered denature
• The enzymes' amino acid sequence changes.
• The enzymes remain the same