The Chemical Basis for Life

What is the purpose  of an enzyme?

• give permission for the reaction
• raise activation energy
• speed up reactions
• control how many reactions occur

Tags

NGSS.MS-LS1-7

What is a substance called if it speeds up a chemical reaction?

• reusable
• catalyst
• specific
• fragile

Which of the following statements about enzymes is NOT true?

• enzymes are reusable
• enzymes work best at specific pH and temperatures
• enzymes are lipids
• enzymes are proteins

These are called the "quick energy" foods

• carbohydrates/sugars
• protein
• fats/lipids
• nucleic acids

Tags

NGSS.HS-LS1-7

Which is not a use or function of protein?

• forms enzymes and hormones
• forms transport channel in cell membrane
• forms structural proteins in the body
• quick energy

__________ are nucleic acid functions

• store & transfer genetic info
• store & create energy
• structure & energy for cells
• membrane structure and nutrient transfer

Tags

NGSS.HS-LS1-1

What type of carbohydrate is this?

• polysaccharide
• disaccharide
• monosaccharide
• it isn't a carbohydrate

Which macromolecule is shown?
 View Figure 1 (if not visible)

• lipid
• protein
• nucleic acid
• carbohydrate

Carbohydrates are made of... 

• C H O
• C H O N
• C H O N P
• C H O N S

Tags

NGSS.HS-LS1-6

Which of the following is LEAST likely to dissolve in water?

• nonpolar fats and oils
• polar sugar molecules
• salt made of a positive sodium ion and a negative chloride ion
• all of the substances will dissolve easily in water

Tags

NGSS.HS-ESS2-5