WorksheetsU1/ U3 Test
Total questions: 15
Worksheet time: 8mins
Why is the structure/order of proteins important?
A change in structure causes a change in the function
The order of proteins is not important
The order determines the effectiveness of the protein
The structure of proteins determines the structure of carbohydrates
What is this enzymes optimal temperature?
10*C
40*C
50*C
70*C
Which claim is best supported by this graph?
This enzyme has an optimal pH of 13
The enzyme prefers more of an acidic environment
The optimum pH for this enzyme is 4 and denatures at a pH of 9
The optimum pH for this enzyme is 9 but it denatures at a pH of 4
A noncompetitive inhibitor binds to an enzyme and changes its shape. What effect does this have on the enzyme?
The enzyme can not be reused after the reaction is complete
The function of the enzyme is changed
The substrate changes shape to fit the enzyme
There is no change in the enzymes function
Which molecule reacts with itself to form this polypeptide chain?
amino acids
glucose
starch
nucleotide
Which is a function of a protein?
Fat storage
To provide the body with fast energy
Makes up the cell membrane
To catalyze chemical reactions
The structure labeled E represents-
Products
Enzyme
Substrate
Reactants
Which of the following lines shows the presence of an enzyme?
Black
Red
Which pair of answers correctly matches the monomer and the polymer?
Glucose- Protein
Amino Acid- Nucleic Acid
Nucleotide - Nucleic Acid
Fatty Acid- DNA
What is the function of an enzyme?
Dehydration Synthesis
Producing disaccharides from monosaccharides
Slowing down the rate of chemical reactions
Catalyze chemical reactions by lowering the activation energy
Which of the following describes the functions of carbohydrates
short term energy and support
catalyze chemical reactions
long term energy storage, insulation, and cell membrane
cell to cell recognition
Which statement best describes what happens to an enzyme after it catalyzes a chemical reaction?
the enzyme is denatured
the enzyme is useless and cannot be reused
the enzyme is left unchanged and and can be reused
it dissipates and is used up
What is a distinguishing feature between saturated and unsaturated fats?
unsaturated fats are solid at room temperature
saturated fats are liquid at room temperature
unsaturated fats are solid at room temperature and have no single bonds between carbons
saturated fats are solid and only have single bonds between carbons
Which macromolecule provides the most energy on a gram for gram count?
carbs
nucleic acids
lipids
proteins
Which image represents the basic structure of a lipid?
