Salihu Bio 101 EXAM 2

THe most common purpose of proteins is to serve as ____ 1. raw material for growth 2. fuel for running the body 3. organic precursor for enzyme construction 4. long term energy storage 5. storage of genetic information

1. raw material for growth

A protein is a polymer of ____ Answers: 1. Lipids 2. polypeptides 3. nucleic acids 4. amino acids 5. Oligosaccharides

4. amino acids

All of the following are lipids except ____ 1. cholesterol 2. steroids 3. fats 4. triglycerides 5. insulin

5. insulin

Sucrose (table sugar) and lactose (the sugar found in milk) are examples of Answers: 1. complex carbohydrates 2. simple sugars 3. naturally occurring enzymes 4. monosaccarides 5. disaccharides

5.disaccharides

Which macromolecule contains an organism's genetic information? a. monosaccharide b. fatty acid c. DNA d. polysaccharide e. Phospholipid

c. DNA

Which of the following foods is not a significant source of complex carbohydrates? a. rice b. all of the listed c. fresh fruit d. pasta e. oatmeal

c. fresh fruit

Which of the following about starch is incorrect? a. starch is the primary form of energy storage in plants b. all the statements about starch are incorrect c. starch consists of a hundred or more glucose molecules joined together in a line d. starch is a polysaccharide. Starch tastes sweet because it is made from glucose

d. starch is a polysaccharide. Starch tastes sweet because it is made from glucose

WHich of the following are all monosaccharides? a. glucose and maltose b. starch, cellulose and glycogen c. glycogen and glucose d.fructose and cellulose e. glucose, fructose and galactose

e. glucose, fructose and galactose

All of the following are proteins except___ a. enzyme b. Hemoglobin c. an insulin d. an antibody e. cholesterol

e. cholesterol

All of the following are carbohydrates except a. cellulose b. chitin c. glycogen d. starch e. spider's silk

e. spider's silk