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WorksheetsReview for Macromolecule Quiz & F. A. #2
Total questions: 25
Worksheet time: 13mins
Which type of molecule makes up the double layer of a cell membrane?
carbohydrate
lipid
nucleic acid
protein
In cells, __________ are proteins that are needed to lower the amount of energy required to start chemical reactions.
acids
enzymes
products
substrates
The sequence of ________________ in a DNA molecule determines the protein that will be produced.
lipids
nucleotides
proteins
sugars
Which compound is a reusable, complex protein that speeds up chemical reactions?
a sugar
a lipid
an enzyme
starch
In the lock-and-key model of enzyme action, the ___________ fits into the __________ of the enzyme.
product; substrate
active site; product
substrate; active site
active site; substrate
Proteins are made of ________________________, and the sequence of these determine how the protein will fold up and take shape, which ultimately determines it's function.
amino acids
lipids
monosaccharides
nucleotides
Identify which biomolecule is "A" from the above table.
Lipid
Protein
Carbohydrate
Nucleic Acid
Identify which biomolecule is "D" from the above table.
Lipid
Protein
Carbohydrate
Nucleic Acid
A person starts to eat a hamburger. As she takes a bite and chews, an enzyme called salivary lipase helps to begin the process of fat digestion. Which of these is the BEST description of the role of enzymes during digestion?
Enzymes are acids that physically break down food molecules.
Enzymes moisten food to help teeth in the mechanical process of grinding and chewing.
Enzymes are proteins that speed up the process of chemically breaking down food molecules.
Enzymes are cells that secrete saliva and other necessary substances needed for digestion.
Lipids are important to living things for all of the following reasons, EXCEPT that they are
needed to form cell membranes.
chained together to form proteins.
used for insulation in Arctic animals.
used for long-term energy storage in hibernating animals.
This is the main energy storage and transfer molecule in the cell.
ADP
ATP
DNA
RNA
This is a compound made up of carbon, hydrogen, and oxygen atoms; it is used by cells to store and release energy. Sugars are made by chloroplasts through photosynthesis and consumed by mitochondria through cell respiration.
Carbohydrates
Lipids
Nucleic Acids
Proteins
This holds an organisms hereditary information.
ADP
ATP
DNA
RNA
This is a macromolecule that holds cell information in a coded form. Made of sugar, phosphate and nitrogen-containing bases.
Carbohydrates
Lipids
Nucleic Acids
Proteins
A macromolecule made up of mainly carbon and hydrogen atoms that is primarily used for energy storage and in cell membranes.
Carbohydrates
Lipids
Nucleic Acids
Proteins
A macromolecule that contains carbon, hydrogen, oxygen, and nitrogen, which is used by the body for growth and repair.
Carbohydrates
Lipids
Nucleic Acids
Proteins
This is the repeating structural unit that forms RNA and DNA.
Carbohydrates
Lipids
Nucleotides
Proteins
This is a molecule with a large molecular mass. Many examples come from biology and in particular biochemistry.
DNA
Macromolecule
Micromolecular
Ribosomes
All living cells contain genetic material that codes for specific traits in an organism. Which of the following biomolecules carry the genetic code in the cells?
Carbohydrates
Lipids
Nucleic Acids
Proteins
Fill in the missing blanks:
Active Enzyme + (1)______ → (2)______ + (3)______
A)B)C)D)
(1) Product (2) Substrate (3) Reusable Enzyme
(1) Substrate (2) Product (3) Reusable Enzyme
(1) Substrate (2) Product (3) Inactive Enzyme
(1) Product (2) Substrate (3) Inactive Enzyme
Hydrogen peroxide is a harmful by-product of normal metabolic activity. In order to prevent damage, hydrogen peroxide must be broken down into water and oxygen quickly. What would speed up the decomposition of hydrogen peroxide?
a catalyst
bubbling in oxygen
decreasing the temperature
adding more hydrogen peroxide
Will and Juan decided to make a snack after school: peanut butter and jelly sandwiches and a glass of cold milk. They assembled the following ingredients:
-Bread
-Skim Milk
-Grape Jelly
-Peanut Butter
Which ingredient provides the most calories (energy) and tell why.
Bread because it is a carbohydrate.
Grape jelly because it is mostly sugar.
Milk because it is a direct product of an animal.
Peanut butter because it contains oils or lipids.
The role of enzymes in biological systems is to catalyze chemical reactions. In 1894, chemist Emil Fischer proposed the lock and key analogy of enzyme action. This analogy explains the specific action of an enzyme with a single substrate. Which statement represents the lock and key analogy?
Only a specific substrate fits into the active site of the enzyme.
The substrate reacts with the enzyme in the active site to produce a product.
The enzyme weakens chemical bonds in the substrate and catalyzes a chemical change.
The substrate, plays a role in determining the final shape of the enzyme, and the enzyme is somewhat flexible.
In humans, excess blood glucose is stored in the liver and in muscle tissue in the form of glycogen. Glycogen is a long chain of glucose molecules bonded together. Because of this, glycogen is called a _____________________.
lipid
monosaccharide
polysaccharide
protein
Catalysts increase the rate of a reaction by
being consumed during the reaction.
lowering the activation energy of a reaction.
raising the concentration of the reactants.
raising the temperature of the reaction.
