Chapter 2 Test
Organisms need carbohydrates, lipids, and proteins to
Carry out essential structures and processes.
Pepsin works best in which type of environment?
Acidic, only
Glycogen and starch
Carbohydrate
Cells rely on water to aid in dissolving substances that must be processed, created, and/or transported by the cell. These dissolved substances are known as
Solutes
Proteins do all the following in our bodies EXCEPT
Store genetic information
The graph shown represents the relationship between pH and the rate of an enzyme action for two enzymes, X, and Y. Which statement best describes this pattern of enzyme action? (how can I read the graph?)
The highest point is where the action is at its highest.
Which phrase correctly describes starch?(7)
A polymer made of glucose.
Water molecules form a meniscus when in a graduated cylinder. This attraction to the container is called
Adhesion
Which of the following molecules would be placed in area A?
Amino Acids
The name of the enzyme found in saliva that helps break down complex starch molecules
Amylase
Glucose, Sucrose, Maltose, Lactose, Fructose,
Carbohydrate
Made by producers to be the main source of energy for living things.
Carbohydrate
The clear protein of an egg white becomes white and firm when cooked because the heat (21)
Changes the protein structure.
Which characteristic allows enzymes to function in a specific way?
Each enzyme has a characteristic shape.
Which is a characteristic of an enzyme?
Enzymes regulate the rate of a specific chemical reaction.
Which of the following is not a carbohydrate?
Lactase
Main component of cell membranes, energy storage, insulation
Lipid
Which of the following compounds is most likely associated with this statement: Some of these molecules are made from three fatty acids bonded to a molecule of glycerol.
Lipids
Contains instructions to build proteins
Nucleic Acids
One category of organic compounds contains molecules composed of long hydrocarbon chains. The hydrocarbon chains may be saturated or unsaturated. Which of the following categories of organic compounds contains these molecules?
Nucleic Acids
Basic unit consists of a carboxyl Group, amino group, lone hydrogen, a variable side chain all attached to a central carbon atom.
Protein
Hemoglobin, insulin, albumin (egg white), and sucrase, which are composed of chains of amino acids, are examples of
Protein
What do disaccharides, such as sucrose, and polysaccharides, such as starch, have in common?
They are proteins made of amino acids
Plants and animals are composed of organic compounds. Which of the following are the common elements found in organic compounds?
carbon, hydrogen, oxygen, nitrogen
The diagram below represents a sequence of events that occurs in living things. Letter X represents
organic molecules such as carbohydrates, lipids, and proteins