Bio Exam 1

Front 1

Your classmate is trying to keep all the facts about biological molecules straight. She is confused about proteins and asks you to explain how the terms "amino acid" and "protein" are related. What do you tell her?

Back 1

A.) Proteins are a portion of an amino acid
B.) Proteins are made up of a chain of amino acids
C.) Proteins are chains of carbohydrates and amino acids are a type of carbohydrate
D.) Amino acids are formed by joining together many proteins
E.) None of the above

Front 2

Molecules that cross a cell membrane through the process of facilitated diffusion:

Back 2

A.) move from an area of low concentration to an area of high concentration
B.) require the aid of transport protein
C.) are tiny or very non-polar
D.) can only enter and never leave the cell
E.) require an expenditure of energy

Front 3

Trans fats are unsaturated plant oils that are bombarded with hydrogen ions until they become saturated. True or False?

Back 3

A.) True
B.) False

Front 4

The movement of molecules across a membrane from an area of low concentration to one of high concentration is best described as:

Back 4

E.) active transport

Front 5

The most important reason that cells must be small is that it reduces the total number of phospholipids, the organism must synthesize (make) as it grows, thus reducing its energy requirements. True or False?

Back 5

A.) True
B.) False

Front 6

Water is not considered to be an organic molecule because

Back 6

A.) it contains oxygen
B.) it is so polar
C.) it is hydrophobic
D.) it does not contain both carbon and hydrogen
E.) it IS an organic molecule

Front 7

Which of the following provides long-term carbohydrate energy storage in plants?

Back 7

A.) glycogen
B.) starch
C.) cholesterol
D.) glucose
E.) cellulose