Unit 1 Review: Macros & Enzymes

Which of the following is NOT one of the 4 groups of organic molecules?

• Enzymes

• Carbohydrates

• Lipids

• Nucleic Acids

Tags

NGSS.HS-LS1-6

Which of the following is true about enzymes?

• They can work for a number of very different substrates

• They have a folded shape that only accepts one substrate

• They can work on substrates with similar shapes, but not as well

• The active site only accepts one type of product

Which of the following is NOT true about denaturing of enzymes?

• They are destroyed and won't work again

• It can be caused by heat

• They will work, but not very well

• It can be caused by pH

Which organic molecule's monomer is made of a sugar, a phosphate, and a base?

• Proteins

• Carbohydrates

• Lipids

• Nucleic Acids

Which is a characteristic of an enzyme?

• Not reusable

• Increases activation energy

• Specific to a particular substrate

• Not affected by pH or temperature

Why are proteins good at getting things done in cells?

• They store a lot of energy

• They can fold into complex shapes

• They have bases that can store information

• They don't mix well with water

Why are nucleic acids good for storing information?

• They have a lot of energy in their bonds

• They can fold into complex shapes

• They have bases that can be arranged to store information

• Nucleic acids don't store information, proteins do

Graph I shows the relationship between the relative rates of activity of Enzyme A and B and temperature. Graph II shows the relationship between the relative rates of activity of Enzymes A and B and pH. Under which conditions is Enzyme A most effective?

• 45 degrees and pH of 5

• 40 degrees and pH of 5

• 45 degrees and pH of 9

• 50 degrees and pH of 9

If I want to put together an enzyme, which of the following should I use?

• Nucelotides

• Amino Acids

• Monosaccharides

• Fatty Acids

Tags

NGSS.HS-LS1-1

NGSS.HS-LS1-6

Why are enzymes so important to life?

• They provide the necessary energy to perform all the reactions life needs

• They allow life to control all its reactions

• They store the information necessary to keep life going

• They are very helpful, but not 100% necessary for life