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WorksheetsMolecules
Total questions: 10
Worksheet time: 17mins
If Enzyme 2 is denatured, the levels of which substance will increase?
Lactose
Galactose
Galactose-1-phosphate
Glucose-6-phosphate
Based on these data, this enzyme functions best at what temperature and pH?
Temperature of 27°C and a pH of 4
Temperature of 37°C and a pH of 6
Temperature of 40°C and a pH of 8
Temperature of 50°C and a pH of 10
Carbohydrates are more easily metabolized that lipids. However, on a gram-for-gram basis lipids provide the cells with more
nitrogen
proteins
structure
energy
A student preparing for a hike wants to pack a snack that has biomolecules that provide quickly available energy but few excess calories. Which nutrition label lists the best combination of biomolecules that provide quickly available energy while providing the fewest calories from other types of biomolecules.
In all three complex carbohydrates, the subunits of glucose are bound together differently. Because they have different structures, they most likely
contain different chemical elements
form different proteins
carry different nucleotides
perform different functions
Which statement explains the effect of an inhibitor on an enzyme?
A substrate will be able to bond with the enzyme.
The enzyme will likely be attacked by immune cells.
The enzyme will be unable to produce more enzymes.
A substrate will be unable to attach to the enzyme.
Which statement about enzyme activity is best supported by this graph?
An enzyme must be composed of multiple polypeptides, or subunits, to be active.
An enzyme's rate of activity increases with time until it becomes inactive.
An enzyme functions best under specific temperature conditions.
An enzyme works equally well in bacteria that are adapted to high temperatures and in eukaryotic cells such as human cells.
Which of the following represents evidence that could be used to support the claims about this product?
Complex carbohydrates are found in vegetables and grains, which are good sources of fiber, vitamins, antioxidants, and minerals. Vegetables and grains are known to reduce the risk of heart disease.
Some nutritional supplements provide vitamins and minerals that are missing from a person's diet. These types of nutritional supplements contain important nutrient that reduce the risk of malnutrition.
Consuming enzymes specific for carbohydrate digestion helps the body digest complex carbohydrates more quickly in the stomach and small intestine.
Some nutritional supplements add beneficial bacteria to a person's diet. These bacteria populate that stomach and prevent carbohydrate digestion.
Which statement explains how producers are dependent upon consumers for survival?
Consumers supply oxygen for producers to undergo aerobic respiration.
Consumers produce carbon dioxide for producers to use during photosynthesis.
Consumers provide chemical energy needed by producers for cellular respiration.
Consumers make lactic acid that producers use in photosynthesis.
People who have Alzheimer's disease experience an increasing loss of brain function and cognition over time. Alzheimer's is characterized by a buildup of abnormal protein fragments that damage brain cells. Recently scientists have discovered an enzyme, BACE2, that decreases these abnormal protein fragments in the brain of a person with Alzheimer's disease. Which statement explains how BACE2 most likely works?
BACE2 breaks down into smaller pieces that react with the abnormal protein fragments, forming more complex molecules.
BACE2 speeds up the reaction that breaks down the abnormal protein fragments.
BACE2 molecules link several abnormal protein fragments together, forming a complete protein.
BACE2 is a reactant that combines with the abnormal protein fragments.
