IB Quarter 1 Review

Tuesday, October 27

Directions

• Get into groups of 3 or 4

• Sit with you group

• Make a table tent with your group #

• To answer a question, raise your hand, and I’ll call on you. – First person to raise his/her hand

• You get points for each correct answer.

Here we go …

Good luck!

List the 4 natural elements that are essential to life.

A trace element is …

The bonds that are broken when water vaporizes are …

• A. ionic bonds

• B. bonds between water molecules

• C. bonds between atoms within individual water molecules.

• D. polar covalent bonds

• E. non polar covalent bonds

Distinguish the difference between non polar covalent bonds and polar covalent bonds.

Explain surface tension.What property of water makes surface tension possible?

List the 4 groups of macromolecules.

Which of the following terms includes all others in the list?

• A. monosaccharide

• B. disaccharide

• C. starch

• D. carbohydrate

• E. polysaccharide

What is the ratio of hydrogen to oxygen in carbohydrates? How does the ratio compare to that of lipids?

Lactose is a …

• A. polysaccharide

• B. monosaccharide

• C. disaccharide

• D. hexose

Compare the function of lipids and carbohydrates in terms of energy storage.

Outline the processes of hydrolysis and dehydration reaction.

What is this?

• Which macromolecule group does this figure belong to?

Name the four components attached to the center carbon in ALL amino acids.

How many amino acids exist? What component makes each amino acid unique?

An enzyme accelerates a metabolic reaction by …

• A. altering the over free-energy change for the reaction.

• B. making an endergonic reaction occur spontaneously

• C. lowering the activation energy• D. pushing the reaction away from

equilibrium• E. making the substrate molecule more

stable

True or false?

• The size of a molecule determines its function.

Identify …

Define and compare what’s going on in these two pictures.

Identify …

• What’s happening to the enzyme in the picture below? What two factors may have caused this to happen?

Identify … • 1. Define ∆ G. 2. Is

this process endergonic or exergonic? How do you know? 3. What does the addition of

an enzyme do to

the activation

energy?

Compare and contrast competitive inhibition and non-competitiveinhibition.

List the 4 levels of protein structure.

Outline the 4 levels of protein structure …

• Primary – What bonds are present?

• Secondary– What bonds are present?

• Tertiary– What bonds are present?– Which one is the strongest?

• Quaternary

If you see α – helixes andβ – sheets, you know we’re talking about which level of protein structure?

True or False …

• Denaturation at any level of protein structure can have a negative affect on protein function.

Bonds …

• What type of bond exists in one molecule of water, between the oxygen and 2 hydrogen?

• What type of bond exists between the oxygen and hydrogen of multiple molecules of water?