AP Biology Test #2 Molecules And Cells
Multiple Choice: Choose the BEST answer form the choices given.
- 1.Carbohydrate-containing layer at the surface of the plasma membrane
- A.
Glycocalyx
- B.
Cholesterol
- C.
Triglyceride
- D.
Phospholipid
- E.
Protein
- 2.The process taking place in the diagram below is
- A.
Osmosis
- B.
Facilitated diffusion
- C.
Cyclosis
- D.
Pinocytosis
- E.
Exocytosis
- 3.
Refer to the molecule below- A.
This molecule is used to transport oxygen in the blood
- B.
Starch is a polymer of this molecule
- C.
This is a sterol found in cell membranes and is associated with atherosclerosis
- D.
This molecule could result from the hydrolysis of a protein
- E.
None of the above
- 4.
Refer to the molecule below
- A.
This molecule is used to transport oxygen in the blood
- B.
Starch is a polymer of this molecule
- C.
This is a sterol found in cell membranes and is associated with atherosclerosis
- D.
This molecule could result from the hydrolysis of a protein
- E.
None of the above
- 5.
Refer to the molecule below
- A.
This molecule is used to transport oxygen in the blood
- B.
Starch is a polymer of this molecule
- C.
This is a sterol found in cell membranes and is associated with atherosclerosis
- D.
This molecule could result from the hydrolysis of a protein
- E.
None of the above
- 6.
Refer to the molecule below
- A.
This molecule is used to transport oxygen in the blood
- B.
Starch is a polymer of this molecule
- C.
This is a sterol found in cell membranes and is associated with atherosclerosis
- D.
This molecule could result from the hydrolysis of a protein
- E.
None of the above
- 7.
Refer to the molecule below
- A.
This molecule could result from the hydrolysis of a protein
- B.
This molecule is used to transport oxygen in the blood
- C.
This is a sterol found in cell membranes and is associated with atherosclerosis
- D.
This molecule could result from the hydrolysis of a protein
- E.
None of the above
- 8.
The process taking place below is called
- A.
Endocytosis
- B.
Pinocytosis
- C.
Phagocytosis
- D.
Exocytosis
- E.
Cyclosis
- 9.The process taking place below is called
- A.
Endocytosis
- B.
Exocytosis
- C.
Active transport
- D.
Passive transport
- E.
Facilitated diffusion
- 10.From the appearance of the TURGID CELL, it can be concluded that
- A.
The environment is hypertonic to the cell
- B.
The environment is hypotonic to the cell
- C.
The cell is hypotonic to the environment
- D.
Solute concentration of the environment is greater than the solute concentration of the cell
- E.
The cell and the environment are isotonic to each other
- 11.If the concentration of the FLACCID CELL is 2% then the solute concentration in the environment of the cell may be
- A.
1.0%
- B.
5.0%
- C.
0.5%
- D.
2.0%
- E.
0.2%
- 12.When the cell membrane disconnects from the cell wall due to loss of fluid this process is know as
- A.
Crenation
- B.
Cyclosis
- C.
Plasmolysis
- D.
Hemolysis
- E.
Autolysis
- 13.
Refer to the EVENTS listed below and the DIAGRAM that follows: 1 - Guard cells become turgid 2 - Stomata close 3 - Guard cells become flaccid 4 - Stomata open 5 - Ions move into guard cells increasing the solute concentration 6 - Ions leave guard cells decreasing the solute concentration 7 - Water enters guard cells from the epidermal cells 8 - Water leaves guard cells and enters epidermal cells DIAGRAM When the sun rises and a leaf begins the process of photosynthesis, which sequence of events results in the appearance of the stomata as open
- A.
2,1,6,7
- B.
6,8,3,2
- C.
1,6,4,5
- D.
5,7,1,4
- E.
3,7,5,2
- 14.The ions, whose movement into and out of the guard cells cause the stomata and guard cells to open or close are
- A.
Na+ ions
- B.
OH- ions
- C.
Ca++ ions
- D.
I- ions
- E.
K+ ions
- 15.Human hair is an example of this type of secondary level protein
- A.
Beta pleated sheet
- B.
Globular protein
- C.
Alpha helix
- D.
Tertiary protein
- E.
None of the above
- 16.All of the following are considered proteins EXCEPT:
- A.
Antibodies
- B.
Enzymes
- C.
Collagen
- D.
Dehydrogenase
- E.
Steroids
- 17.All of the following are true amino acids EXCEPT
- A.
They compose all enzymes and some hormones
- B.
They contain an amino group and a carboxyl group
- C.
They can act as buffers
- D.
They are building blocks of steroids
- E.
They are found in hemoglobin
- 18.Carbon 13 and Carbon 14 are isotopes and therefore have different numbers of
- A.
Electrons
- B.
Neutrons
- C.
Protons
- D.
Electrons and neutrons
- E.
Protons and electrons
- 19.The biochemical process by which most organisms extract energy from food is known as
- A.
Anabolism
- B.
Saprophytism
- C.
Parasitism
- D.
Commensalism
- E.
Catabolism
- 20.Cyanide poisoning is fatal within minutes since it binds irreversibly with the active sites of respiratory enzymes. Cyanide acts as a(an)
- A.
Competitive inhibitor
- B.
Coenzyme
- C.
Allosteric inhibitor
- D.
Allosteric stimulator
- E.
Enzyme cofactor
- 21.Which of the following is a structural polysaccaride
- A.
Amylose
- B.
Cellulose
- C.
Glycogen
- D.
Amylopectin
- E.
Starch
- 22.During the synthesis of a polypeptide chain from 40 amino acids, the number of water molecules released is
- A.
40
- B.
42
- C.
25
- D.
39
- E.
80
- 23.Humans lack the enzyme necessary to digest which of the following carbohydrates?
- A.
Cellulose
- B.
Amylose
- C.
Sucrose
- D.
Lactose
- E.
Maltose
- 24.The major component of the fluid bilayer of a plasma membrane.
- A.
Glycocalyx
- B.
Cholesterol
- C.
Triglyceride
- D.
Phospholipid
- E.
Protein
- 25.Carrier molecule in the plasma membrane.
- A.
Glycocalyx
- B.
Cholesterol
- C.
Triglyceride
- D.
Phospholipid
- E.
Protein
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