HBD-T4-02/03

1.

5 points

Bases have pHs lesser than water, while acids have pHs greater than water.

True

False

2.

5 points

What are the two classes of proteins?

amino acids and nucleic acids

linear and folded

flexible and dynamic

globular and fibrous

3.

5 points

When two atoms share outer-shell electrons, they are creating what type of bond?

hydrogen

peptide

ionic

covalent

4.

5 points

The formation of peptide bonds is carried out by what type of reaction?

amino

polypeptide

hydrolysis

dehydration

5.

5 points

Which of the following is the most electronegative?

Oxygen

Magnesium

Francium

Zinc

6.

5 points

What is a characteristic of an unsaturated fat?

one or more double bonds

no "kinks"

only single bonds

oxygen-carbon bonds in tail

7.

5 points

ATP is comprised of how many phosphate groups?

3

2

4

1

8.

5 points

How many nucleotide monomers are there? Hint: An example would be cytosine.

6

4

20

3

9.

5 points

Bond energy is the amount of energy

...required to break a chemical bond

...James Bond will likely have in his next motion picture

...used to form new substances

...released or consumed

10.

5 points

Phospholipids are comprised of X heads and Y tails.

...phosphate...phosphate

...phosphate...lipid

...lipid...phosphate

...lipid...lipid

11.

5 points

Ionic bonds occur when an atom transfers an electron to another atom.

True

False

12.

5 points

Cholesterol is what type of molecule? Choose the most specific answer.

Steroid

Lipid

Carbohydrate

Protein

13.

5 points

Non-polar solvents, H+/OH- ions, and thermal agitation can do what to a protein?

make it operate quicker

denature it

repair it

strengthen it

14.

5 points

The structure of exoskeletons are made up of which of the following?

glycogen

starch

chitin

cellulose

15.

5 points

The molecular formula of water looks like which of the following?

W-A-T-E-R

H+H+O-

H2O

O-H-O

16.

5 points

Cellulose and chitin are X used for Y.

starches; structural support

carbohydrates; energy storage

carbohydrates; structural support

compounds; energy

17.

5 points

A pure substance that cannot be broken down into other substances by chemical means is called a/an

cell

atom

element

compound

18.

5 points

Large polymers are formed from

monosaccharides

small monomers

small proteins

amino acids

19.

5 points

An isotope has a different number of protons than the original element, but the same number of neutrons.

True

False

20.

5 points

When bonds are formed, energy is X. When bonds are broken, energy is Y. Choose the best answer.

...absorbed...released

...released...absorbed

...absorbed...absorbed

...released...released

21.

5 points

The mass number is equal to the addition of which two quantities?

atomic number + protons

protons + neutrons

only protons

protons + electrons

22.

5 points

A carbon atom surrounded by an amino group and carboxyl group comprise the foundation of an amino acid. How many amino acids are there?

6

20

8

14

23.

5 points

Elements interacting with other elements form what?

compounds

atoms

molecules

suspensions

24.

0 points

Do you agree to report any inaccuracies in tests published by the Honors Biology Dashboard and the Latin Unum Dashboard to christianduhay@gmail.com?

I agree

25.

5 points

Lipids are insoluble in water.

True

False

26.

5 points

How many bonds does a carbon atom make?

4

6

8

2

27.

5 points

Kevin ate a big lunch before swimming a marathon. His body will perform which action first to gain energy?

burn proteins gained most recently

use cellulose digested from plant matter

use glycogen stored in liver and muscles

burn lipids stored as fat

28.

5 points

How many levels of protein structure are there?

3

2

1

4

29.

5 points

What are the four main elements that make up 96% of living matter?

Na,H,O,C

C,H,P,O

Fe, I, C, O

C,H,O,N

30.

5 points

Phospholipids mainly comprise which component of cells?

cytoplasm

cell membrane

nucleus

mitochondria

31.

5 points

A short polymer is combined with a monomer to form a large polymer. Which process does this scenario describe?

dehydration/condensation

hydrolysis

photosynthesis

cellular respiration