cell biology - organic compounds and enzymes

Question 1

which of the following carry information?
a) carbohydrates
b) lipids
c) proteins
d) nucleic acids

Answer 1

d) nucleic acids

Question 2

which of the following contain genetic code?
a) DNA
b) DNA and RNA
c) RNA
d) neither DNA nor RNA

Answer 2

a) DNA

Question 3

true or false: fatty acids are a polymer

Answer 3

false

Question 4

as product concentration increases, the reaction rate of a chemical reaction will __________.
a) remain constant
b) decrease
c) increase

Answer 4

b) decrease

Question 5

true or false: increasing the concentration of enzymes will lead to a greater reaction rate

Answer 5

true

Question 6

amino acids make up -
a) lipids
b) carbohydrates
c) proteins

Answer 6

c) proteins

Question 7

triglycerides are polymers of-
a) proteins
b) lipids
c) carbohydrates

Answer 7

b) lipids

Question 8

large changes in pH and/or temperature will cause the proteins to
a) activate
b) congregate
c) denature

Answer 8

c) denature

Question 9

uracil is found in
a) neither DNA nor RNA
b) DNA and RNA
c) RNA
d) DNA

Answer 9

c) RNA

Question 10

organic compounds have which ion>
a) nitrogen
b) oxygen
c) sodium
d) carbon

Answer 10

d) carbon

Question 11

enzyme activity is at its highest when pH is
a) quite acidic
b) slightly acidic
c) slightly alkaline
d) quite alkaline

Answer 11

c) slightly alkaline

Question 12

enzyme activity is at its highest when temperature is
a) at/near core temperature
b) below core temperature
c) greater than core temperature

Answer 12

a) at/near core temperature

Question 13

Cx(H2O)y is the general formula for
a) lipids
b) proteins
c) nucleic acids
d) carbohydrates

Answer 13

d) carbohydrates

Question 14

what protein structure has this description: order of amino acids

Answer 14

primary

Question 15

what protein structure has this description: arrangement of polypeptide chains

Answer 15

quarternary

Question 16

which protein structure has this description: bonding between amino acids

Answer 16

secondary

Question 17

which protein structure has this description: folding pattern of amino acids

Answer 17

tertiary

Question 18

activation energy is the
a) amount of energy needed to be absorbed by a chemical reaction
b) amount of energy needed to be released by a chemical reaction
c) amount of energy needed to end a chemical reaction
d) amount of energy needed to start a chemical reaction

Answer 18

d) amount of energy needed to start a chemical reaction