what is the difference between dehydration and hydrolysis?
Dehydration- forming of polymers by removing water
Hydrolysis- breaking of polymers by adding water
200
What are the three groups that make up lipids?
Fats, phospholipids, and steroids.
200
Proteins are long chains of . . .
A. nucleotides
B. sugar and spice and everything nice
C. amino acids
D. fatty acids
E. monosaccharides
A. Nucleotides
200
What is the name of the sugar for DNA and the sugar for RNA?
DNA- deoxyribose
RNA- ribose
300
What carbohydrates do plants store? What carbohydrates do animals store?
Plant- starch
Animal- gycogen
300
True or false: Lipids mix poorly, if at all, with water.
True.
300
Proteins do all of the following things in the body except which one of the following?
A. Carry genetic information
B. Speed up chemical reactions
C. Digest food
D. Carry oxygen in blood
E. Defend against microorganisms
A. Carry genetic information
300
Nucleoside is a pyrimidine or purine base
A. covalently bonded to a sugar
B. ionically bonded to a sugar
C. hydrogen bonded to a sugar
D. none of the above
A. covalently bonded to a sugar
400
Table sugar, or sucrose, is made up of which two single sugar units?
a) Fructose and galactose
b) Lactose and glucose
c) Glucose and fructose
d) Maltose and glucose
C. Glucose and fructose
400
Which one is better for you: saturated or unsaturated fats? Why?
Unsaturated. Due to the double bonds it is more flexible and easier to digest. Unsaturated fats lower LDL (bad) cholesterol and maintain HDL (good) cholesterol.
400
What strengthens the weak bonds during the tertiary structure of protein folding?
Disulfide bridges.
400
What nitrogenous bases are purines? What nitrogenous bases are pyrimidines?
1.Purine- adenine and guanine
2. Pyrimidine- cytosine, thymine, uracil.
500
Starch requires which digestive enzyme to break it down into individual glucose units?
a) Protease
b) Lipase
c) Amylase
d) Both lipase and amylase
C. Amylase
500
Name three uses of lipids in living things.
1. energy in adipose cells
2. fat layer for warmth (whale)
3. adipose tissues cushion vital organs
500
What is the importance of the –R group in an amino acid molecule?
–R group is important because it is the differentiation factor of amino acids. Dictates different functions for each protein.
500
What are the newly synthesized fragments on the lagging template strand of DNA?