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WorksheetsEOC Prep 1/2 Review
Total questions: 15
Worksheet time: 29mins
Name
Class
Date
1.
What is another name for the substance labeled "catalyst"?
a)
A. Enzyme
b)
B. inorganic compound
c)
C. Hormone
d)
D. Antibody
2.
2. Many of the proteins in the human body are enzymes that catalyze chemical reactions. What is the relationship between enzymes and activation energy?
a)
A. When an enzyme catalyzes a reaction, it increases the activation energy of the reaction
b)
B. When an enzyme catalyzes a reaction, it increases the activation energy of the product.
c)
C. When an enzyme catalyzes a reaction, it decreases the activation energy of the reaction.
d)
D. When an enzyme catalyzes a reaction, it does not affect the activation energy of the reaction.
3.
7. The human body maintains a temperature of around 98.6 degrees at all times. Enzymes are involved in almost every chemical reaction in the body. Which of the following describes the connection between these two statements?
a)
A. Enzymes function best at a specific temperature.
b)
B. The body needs to be warm to prevent hypothermia.
c)
C. The body is kept relatively warm to prevent too much enzyme action.
d)
D. There is no connection between the two statements.
4.
Which of the following conclusions can be drawn from this graph?
a)
A. The optimum pH of the enzyme is 6.6.
b)
B. The optimum pH of the enzyme is 5.8
c)
C. The enzyme’s activity continually increases as pH increases from 5.0 to 9.0
d)
D. The enzyme’s activity is greater around pH of 8.0 than around pH of 5.0.
5.
1. Some bacteria live in hot springs. Their cells contain enzymes that function best at temperatures of 70 °C or higher. At the temperature of 50 °C, how will the enzymes in these bacterial cells most likely be affected?
a)
A. The enzymes will be destroyed by lysosomes.
b)
B. The enzymes will lose their bond structure and fall apart.
c)
C. The enzymes will require less energy to function than at 70 °C.
d)
D. The enzymes will not increase the rate of reactions as much as they would at 70 °C.
6.
3. Meat tenderizer contains an enzyme that breaks down meat. If meat is coated with tenderizer and then placed in a refrigerator, how would the enzyme be affected?
a)
A. It would break down the meat more slowly.
b)
B. It would disintegrate the meat.
c)
C. It would break down the meat more quickly.
d)
D. It would change the shape of the meat.
7.
4. The combined observations of Mattias Schleiden, Theodor Schwann and Rudolph Virchow resulted in the formation of the cell theory. Which of the following is not part of the cell theory?
a)
A. All cells contain a nucleus.
b)
B. All cells come from other living cells.
c)
C. All living organisms are made of one or more cells.
d)
C. Cells are the basic unit of structure and function of all living things.
8.
16. Cells can be classified into two different categories: prokaryotic and eukaryotic. Which of the following information is needed in order to determine if an organism is prokaryotic?
a)
A. The organism’s color and mass.
b)
B. The organism’s internal structures.
c)
C. If the organism is unicellular or multicellular.
d)
D. The methods the organism uses to feed and move.
9.
Which dye could the technician use to determine whether the cells are prokaryotic or eukaryotic?
a)
A. acridine orange
b)
B. osmium tetraoxide
c)
C. eosin
d)
D. Nile blue
10.
Which type(s) of cells have genetic material that is contained in a nucleus?
a)
bacteria
b)
B. plants only
c)
C. animals only
d)
D. both plant and animal cells
11.
12 The cell membrane of the red blood cell will allow water, oxygen, and carbon dioxide to pass through. Because other substances are blocked from entering, this membrane is called
a)
A. perforated
b)
B. semi-permeable
c)
C. non-conductive
d)
D. permeable
12.
The cell membrane controls movement of materials into and out of the cell. The following particles are moving from high concentration to low concentration and are using a carrier protein. How would you describe this type of movement across the membrane?
a)
A. simple osmosis
b)
B. active transport
c)
C. simple diffusion
d)
D. facilitated diffusion
13.
2. Look at the cross section of a cell membrane of a eukaryotic cell. H+ ions are being pumped from a low concentration to a high concentration. How do you describe this type of transport across the cell membrane?<br />
a)
A. active transport
b)
B. passive transport
c)
C. facilitated diffusion
d)
D. co-transport
14.
27. Which of the following functions does active transport perform in a cell?
a)
A. packaging proteins for export from the cell
b)
B. distributing enzymes throughout the cytoplasm
c)
C. moving substances against a concentration gradient
d)
D. equalizing the concentration of water inside and outside the cell
15.
Osmosis occurs when there is a different concentration of solute molecules on each side of the membrane. What statement best describes the cell after 20 minutes?The drawing below shows a beaker containing a 30% salt solution and a suspended cell containing a 10% salt solution.
a)
A. Water will move from the cell into the beaker, resulting in a smaller cell.
b)
B. Water will move from the beaker into the cell, resulting in a larger cell.
c)
C. Salt will move from the cell into the beaker, resulting in a smaller cell.
d)
D. Salt will move from the beaker into the cell, resulting in a larger cell.
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