Biochemistry Unit Notes Review

Open Ended

In at least one COMPLETE sentence, answer the question:

What is an atom?

• * This should be the first question on the "Research" section of the lab report paper, but there was a typo. Please change the question and answer it in the Research box.

Multiple Choice

When do electrons jump to higher energy levels?

• As they absorb energy

• As they lose energy

• As they emit energy

• As they bump into one another

Multiple Choice

Is sugar (C₁₂H₂₂O₁₁) an element or a compound?

• Element
• Compound

Multiple Choice

Ionic bonds are formed when electrons get

• Shared between two atoms

• Removed from both atoms

• Transferred from one atom to another

• Added to both atoms

Open Ended

Describe how a covalent bond forms, using the diagram provided.

Multiple Choice

What are the characteristics of polar molecules as shown in the image?

• They have equal charge distribution

• They have slightly charged regions

• They are non-polar

• They do not form hydrogen bonds

Categorize

Options (7)

Decide if these molecules are polar or nonpolar based on their molecular symmetry.

Polar Molecule

Nonpolar Molecule

Multiple Choice

Heat Capacity is a measure of the heat required to raise the temperature of 1g of a substance by 1°C.

So...

True or False:

Water has a very high heat capacity, which means it resists changing temperature when heat is added or removed.

• True

• False

Multiple Choice

What is the role of adhesion in capillary action?

• It prevents water from rising

• It allows water to rise in narrow spaces

• It has no effect on water movement

• It only affects solid substances

Multiple Choice

What is the role of solvents in a solution?

• To dissolve other substances

• To be dissolved by solutes

• To create a solid

• To evaporate quickly

Multiple Choice

Which of the following statements is true regarding the concept of "like dissolves like"?

• Polar solvents dissolve polar solutes

• Nonpolar solvents dissolve polar solutes

• Polar substances and nonpolar substances generally remain separate

• All solvents can dissolve all types of solutes

Open Ended

What do you notice about the orientation of the water molecules around the chloride ion?

Fill in the Blanks

A solution with a pH of 5 is 1,000 times more acidic than a solution with a pH of

Open Ended

Describe the relationship between the H+ concentration and the pH value.

Fill in the Blanks

A solution with a pH of 6 is 100 times less acidic than a solution with a pH of

Multiple Choice

What are the three general types of structures for carbon-based molecules?

• Straight chain

• Branched chain

• Ring

• None of the above

Multiple Choice

What are the definitions of monomers and polymers?

• Monomers are made of many subunits

• Polymers are the individual subunits

• Monomers are the individual subunits

• Polymers are made of one subunit

Multiple Choice

What are the three types of polysaccharides mentioned in the image?

• Starch

• Glycogen

• Cellulose

• Protein

Multiple Choice

What are the main differences between starch and glycogen as polysaccharides?

• Starch is found in plants, while glycogen is found in animals.

• Starch is a linear polymer, while glycogen is branched.

• Starch is used for energy storage, while glycogen is used for structural support.

• Starch contains only amylose, while glycogen contains only amylopectin.

Multiple Choice

What are two examples of polysaccharides?

• Glucose and Sucrose

• Fructose and Starch

• Cellulose and Starch

Multiple Choice

Which polysaccharide is used by plants to make their cell wall?

• starch

• glycogen

• cellulose

• chitin

Poll

How confident do you feel about this topic now?

• Very confident
• Somewhat confident
• Not confident