All AP Biology Resources
Example Questions
Example Question #11 : Understanding Carbohydrates
Which of the following best represent the building blocks of polymers?
Unimers
None of these
Monomers
Ions
Monomers
Polymers are built up from monomers. Polymers are placed into different classes based on the different natures of the monomers that make up their structure.
Example Question #12 : Understanding Carbohydrates
Carbohydrates are made up of which of the following subunits?
Lipids
Fats
Amino acids
Sugars
Sugars
Carbohydrates are polymers formed from simple sugars. Amino acids form proteins. Lipids are another class of subunits that make up fats.
Example Question #41 : Ap Biology
Which of the following best represents the smallest unit of carbohydrates?
Polysaccharides
Disaccharides
Monosaccharides
None of these
Monosaccharides
Monosaccharides are the smallest unit of carbohydrates. A disaccharide is made up of two monosaccharides joined together. A string of monosaccharides linked together is a polysaccharide.
Example Question #14 : Understanding Carbohydrates
Which of the following chemical formulas forms the base of monosaccharides?
is the base molecular formula for carbohydrates. Carbohydrates vary based on multiples of this formula (i.e. is the formula for glucose).
Example Question #15 : Understanding Carbohydrates
Identify the molecule that has the chemical formula:
Sucrose
Fructose
Chitin
Glucose
Glucose
is the molecular formula for glucose. Most carbohydrates such as glucose and sucrose have a molecular formula that is a multiple of .
Example Question #41 : Biochemical Concepts
Which of the following terms is best defined as a covalent bond formed between two monosaccharides by a dehydration reaction?
Dehydration linkage
Saccharide linkage
Glycosidic linkage
Covalent linkage
Glycosidic linkage
A glycosidic linkage is defined as a covalent bond created by a dehydration reaction between two monosaccharides. The resulting product is called a disaccharide.
Example Question #17 : Understanding Carbohydrates
Which of the following best describes how energy is stored during cellular respiration?
Lipids
Sucrose
Glucose
None of these
Glucose
Energy is stored in the form of glucose. Cells, in turn, tap into glucose reserves to fuel cellular respiration. The carbon in glucose also serves as raw materials for the synthesis of other molecules such as amino acids.
Example Question #18 : Understanding Carbohydrates
Which of the following is best described as two monosaccharides joined by a glycosidic linkage?
Polysaccharide
Multisaccharide
None of these
Disaccharide
Disaccharide
When two monosaccharides connected together by a glycosidic linkage into a single unit, the product is called a disaccharide. Strings of monosaccharides linked together are called polysaccharides.
Example Question #19 : Understanding Carbohydrates
Which of the following macromolecules is found only in plants and is described as a polysaccharide consisting entirely of glucose molecules?
Starch
Disaccharide
Chitin
Glycogen
Starch
Starch is a storage polysaccharide in plants. It is a polymer consisting solely of glucose. Glucose is a source of fuel for cells; therefore, starch is stored for energy.
Example Question #20 : Understanding Carbohydrates
Starch is commonly found in which of the following organisms?
Bacteria
Plants
Animals
Insects
Plants
Starch is a storage polysaccharide in plants. It is a polymer consisting solely of glucose. Glucose is a source of fuel for cells; therefore, starch is stored for energy.