bio exam 1 practice questions

Is the bond C-H polar or nonpolar?

• nonpolar
• polar

All carbohydrates contain the elements carbon, hydrogen, and oxygen in the approximate molar ratio of which of the following?

• 1:2:1
• 3:2:1
• 1:1:2
• 2:1:2

Carbon-oxygen and carbon-nitrogen bonds are described as which of the following?

• Ionic bonds
• Metallic bonds
• Hydrogen bonds
• polar covalent & unequal sharing of electrons

Glucose and fructose can be described as which of the following?

• Polysaccharides
• Oligosaccharides
• Disaccharides
• structural isomers

When a carbohydrate is formed by linking two monosaccharides by a condensation reaction, we get water plus which of the following?

• Oligosaccharide
• Polysaccharide
• Monosaccharide
• Disaccharide

Which of the following are the three elements generally found in a simple, unmodified carbohydrate, such as glucose?*

• Carbon, Hydrogen, Oxygen
• Sodium, Chlorine, Potassium
• Calcium, Iron, Magnesium
• Nitrogen, Phosphorus, Sulfur

Cellulose, chitin, glycogen, and strach are examples of what?

• Proteins
• Lipids
• Monosaccharides
• Polysaccharides

Glucose and galactose are

• amino acids and isomers of each other
• polysaccharides and identical
• disaccharides and not related
• stereoisomers

dentify the two major classes of nucleic acids

• DNA and RNA
• Proteins and Lipids
• Carbohydrates and Fats
• Enzymes and Hormones

Long polymers made of monosaccharides that have been linked through dehydration reactions are called...

• monosaccharides
• disaccharides
• oligosaccharides
• polysaccharides