WorksheetsBiomolecules NEW 1.1 & 1.2
Total questions: 13
Worksheet time: 7mins
Salivary amylase is an enzyme found in saliva. Adrian discovers that when eating a burger, if he leaves a bite in his mouth, the bread begins to break down and taste sweet, but the meat of the burger does not. What is the substrate salivary amylase must work on?
Lipid
Amino Acid
Starch
Hydrocarbon
Fats are specialized lipid molecules, and enzymes are specialized protein molecules. How do the functions of fats and enzymes differ?
Fats are structural building materials, while enzymes are transportation molecules.
Fats provide support for cells, while enzymes lower the pH of gastric fluids.
Fats regulate body functions, while enzymes denature invasive bacteria.
Fats are storage molecules, while enzymes are catalytic molecules.
Why are nucleic acids necessary for survival?
Nucleic acids store and transmit genetic information.
Nucleic acids provide structures for cells.
Nucleic acids make enzymes to break down food.
Nucleic acids store fat for long-term energy.
Which macromolecule provides structural support and helps communicate chemical signals within a cell?
Proteins
Carbohydrates
Lipids
Nucleic acids
Many people are lactose intolerant and cannot digest dairy products. What enzyme are their bodies most likely lacking?
lipase
lactase
maltase
peptidase
Why would a runner consume carbohydrates before a race?
Carbohydrates provide insulation for heat.
Carbohydrates provide structure for tissues.
Carbohydrates provide genetic material for muscle cells.
Carbohydrates provide energy for the body.
Choose an answer that is TRUE for each blank..
Amino acids combine to create (1)_______.
Monosaccharide (glucose) combine to create (2) _______.
Nucleotides combine to a make (3) ________.
Glycerol and Fatty Acids create (4) ________.
proteins (polypeptides)
starch & glycogen
nucleic acid
lipids
Lipids
nucleic acids
proteins (polypeptides)
starch & glycogen
nucleic acids
proteins (polypeptides)
lipids
starch & glycogen
starch and glycogen
nucleic acids
lipids
proteins (polypeptides)
How does the addition of heat affect the ability of an enzyme to help the sugar molecules form a bond?
Heat allows the sugar molecules to bond more quickly.
Heat provides places on the enzyme for other molecules to bond.
Heat changes the enzyme’s shape so the sugar molecules can no longer bond.
Heat changes the chemical composition of the sugar molecules so they no longer need the enzyme.
How do enzymes speed up chemical reactions in organisms?
Enzymes increase the energy required for a reaction to begin.
Enzymes decrease the energy required for a reaction to begin.
Enzymes have no effect on the energy required for a reaction to begin.
Enzymes maintain the energy needed for a reaction to begin.
Which molecule do whales use for energy storage and insulation?
DNA
Glucose
Fat
Starch
The graph shows the activation energy required for a biochemical reaction under two different conditions. What does the peak of line “X” most likely represent?
The activation energy required for cellular respiration
The activation energy required for photosynthesis
The activation energy required with a catalyst
The activation energy required without a catalyst
Based on the data, how does temperature affect the activity of the enzyme?
Enzyme is most active when the temperature is 5°C.
Enzyme is most active when the temperature is 37°C.
Enzyme is most active when the temperature is 60°C.
The activity of the enzyme is not affected by temperature.
Why did the activity of the enzyme decrease at 60°C?
The shape of the lactase active site remains the same.
The shape of the lactase active site changes.
The concentration of lactase increases.
The concentration of lactase decreases.
