Test 1

Question 1

An unknown substance has a Ph of 12. If you place this substance in water, you would expect it to produce an excess of which of the following ions.

Answer 1

Hydroxyl ions

Question 2

Diffusion is nothing more than

Answer 2

The movement of a substance from higher to lower concentration

Question 3

If a carbon atom has an atomic weight of 12, how many neutrons does it have in its nucleus?

Answer 3

6

Question 4

Organic compound consisting of long chains of nucleotides?

Answer 4

A) Protein
B) Lipid
C) Carbohydrate
->D) None of the above

Question 5

Endocytosis is best described as

Answer 5

The engulfing of a food particle by the cell

Question 6

A prokaryotic cell

Answer 6

Does not have a nucleus

Question 7

The type of bond formed by water molecules due to their polarity

Answer 7

Hydrogen bond

Question 8

The atomic weight (mass) of an atom is equal to the number of

Answer 8

Protons and neutrons

Question 9

Which organelle is made up of a phospholipid bilayer with imbedded proteins

Answer 9

Cell wall

Question 10

Which organelle distinguishes a plant cell from and animal cell

Answer 10

A) Golgi apparatus
B) Cytoskeleton
C) Mitochondria
->D) None of the above

Question 11

Indicate group name of the compound -> Cholesterol

Answer 11

Lipid

Question 12

Indicate group name of the compound -> Starch

Answer 12

Carbohydrate

Question 13

Indicate group name of the compound -> DNA

Answer 13

Nucleic Acid

Question 14

Indicate group name of the compound -> Cellulose

Answer 14

Carbohydrate

Question 15

Indicate group name of the compound -> Enzyme

Answer 15

Protein

Question 16

The diffusion of water thru a semi-permeable membrane is called?

Answer 16

Law of osmosis

Question 17

Maintenance of a relatively constant internal environment?

Answer 17

Homeostasis

Question 18

Site of protein synthesis in a cell (organelle).

Answer 18

Ribosome

Question 19

An isotope is an atom with extra _____ in its nucleus?

Answer 19

Neutrons

Question 20

Type of chemical bond where electrons are shared.

Answer 20

Covalent bond

Question 21

Name of the polysaccharide that plants make to store their excess glucose.

Answer 21

Starch

Question 22

Name of the building block (monomer) of a protein

Answer 22

Amino acid

Question 23

Property of lipids that makes them different from other organic compounds.

Answer 23

Hydrophobic

Question 24

What are two primary differences between prokaryotic and eukaryotic cells. Include an actual organism that is prokaryotic and one that is eukaryotic.

Answer 24

NOT SURE!!!!! HELP!!!!!

Question 25

How are active transport and active transport different?

Answer 25

Active transport uses energy, whereas passive goes with the concentration gradient.

Question 26

Discuss the difference between covalent bond and ionic bond

Answer 26

Covalent bond - Transfer of electrons

Ionic bond - Sharing of electrons