PRINCIPLES OF BIOLOGY (BIOL 1020) 50 STUDY QUESTIONS GUARANTEED PASS
Total 50 questions, each 2 pts, total 100 pts.
1. In a typical plant cell, we will find DNA in .
A) ribosomes. B) chloroplasts. C) vacuole. D) RER. E) Golgi body.
2. A cell has the following molecules and structures: enzymes, DNA, ribosomes, plasma membrane, and nucleoid. It
could be a cell from
A) a bacterium. D) a plant or animal.
B) an animal, but not a plant. E) any kind of organism.
C) a plant, but not a animal.
3. Which of the followings has two of phospholipid bilayers?
A) lysosome. D) nuclear envelope.
B) Golgi body. E) ribosomes.
C) centrioles.
4. Which organelle or structure is absent in animal cells?
A) mitochondria. B) peroxisomes. C) microtubules. D) central vacuole E) centrosomes.
5. Which organelle is the primary site of ATP synthesis in eukaryotic cells?
A) mitochondrion B) lysosome C) vacuole D) peroxisome E) Golgi apparatus
6. What is the function of lysosomes?
A) digestion.
B) protein secretion.
C) ion transport.
D) maintain water balance.
E) photosynthesis
7. ER vesicles fuse into .
A) nucleus B) lysosomes C) Golgi D) mitochondria E) chloroplasts
8. Which pair of structures are responsible for cilia movement?
A) actin filaments and myosin. D) microtubules and kinesin
B) actin filaments and microtubules. E) microtubules and dynein
C) microtubules and myosin.
9. The Golgi apparatus has a polarity, or sidedness, to its structure and function. Which of the following statements
correctly describes this polarity?
A) Proteins in the membrane of the Golgi may be sorted and modified as they move from one side of the Golgi to
the other.
B) Proteins are synthesized on ribosomes which are attached to Golgi’s membrane.
C) The polarity is used to sort and modified lipids from one side of the Golgi to the other.
D) Golgi has double membranes, one is hydrophobic and the other is hydrophilic.
E) Golgi is to digest the food particles occurs in a vesicles.
10. Which of the following is channel protein?
A) proton pump B) Na+XK+ pump C) aquaporin D) phospholipid pores E) None of above
1
, 11.
In which structure you are expected to find the above arrangement of microtubules consisting of nine doublets of
microtubules surrounding a pair of single microtubules?
A) flagella B) centrosome C) centrioles D) actin filament E) basal body of cilia
12. Which of the following is a major cause of the size limits for certain types of cells?
A) the difference in plasma membranes between prokaryotes and eukaryotes.
B) rigid cell walls that limit cell size expansion
C) the need for sufficient surface area to support the cell's metabolic needs
D) limitation on the strength and integrity of the plasma membrane as cell size increases
E) evolutionary progression in cell size; more primitive cells have smaller sizes.
13. Thylakoids, DNA, and double membrane are all components found in .
A) mitochondria B) chloroplasts C) nuclei D) lysosomes E) peroxisomes
14. What is the most likely pathway taken by a newly synthesized protein that will be secreted by a cell?
A) ER→Golgi→nucleus
B) Golgi→ER→lysosome
C) ER→lysosomes→vesicles that fuse with plasma membrane
D) nucleus→ER→Golgi
E) ER→Golgi→vesicles that fuse with plasma membrane
15. White blood cells engulf bacteria through what process?
A) exocytosis. B) pinocytosis. C) osmosis. D) receptorXmediated exocytosis. E) phagocytosis.
16. What is the voltage across a membrane called?
A) water potential D) osmotic potential
B) electrochemical gradient E) membrane potential
C) chemical gradient
17. The membranes of winter wheat are able to remain fluid when it is extremely cold by
A) increasing the percentage of unsaturated phospholipids in the membrane.
B) cotransport of glucose and hydrogen.
C) decreasing the number of hydrophobic proteins in the membrane.
D) increasing the percentage of cholesterol molecules in the membrane.
E) decreasing the number of transmembrane proteins.
18. Singer and Nicolson's fluid mosaic model of the membrane proposed that membranes .
A) consist of a mosaic of polysaccharides and proteins.
B) are a single layer of phospholipids and proteins
C) are a phospholipid bilayer between two layers of hydrophilic proteins
D) consist of protein molecules embedded in a fluid bilayer of phospholipids
E) None of above
19. Osmosis is the process of .
A) water transport across membrane. D) solute diffuse in solvent.
B) H+ transport across membrane. E) water diffuse in solute.
C) water diffuse in ponds.
2
Total 50 questions, each 2 pts, total 100 pts.
1. In a typical plant cell, we will find DNA in .
A) ribosomes. B) chloroplasts. C) vacuole. D) RER. E) Golgi body.
2. A cell has the following molecules and structures: enzymes, DNA, ribosomes, plasma membrane, and nucleoid. It
could be a cell from
A) a bacterium. D) a plant or animal.
B) an animal, but not a plant. E) any kind of organism.
C) a plant, but not a animal.
3. Which of the followings has two of phospholipid bilayers?
A) lysosome. D) nuclear envelope.
B) Golgi body. E) ribosomes.
C) centrioles.
4. Which organelle or structure is absent in animal cells?
A) mitochondria. B) peroxisomes. C) microtubules. D) central vacuole E) centrosomes.
5. Which organelle is the primary site of ATP synthesis in eukaryotic cells?
A) mitochondrion B) lysosome C) vacuole D) peroxisome E) Golgi apparatus
6. What is the function of lysosomes?
A) digestion.
B) protein secretion.
C) ion transport.
D) maintain water balance.
E) photosynthesis
7. ER vesicles fuse into .
A) nucleus B) lysosomes C) Golgi D) mitochondria E) chloroplasts
8. Which pair of structures are responsible for cilia movement?
A) actin filaments and myosin. D) microtubules and kinesin
B) actin filaments and microtubules. E) microtubules and dynein
C) microtubules and myosin.
9. The Golgi apparatus has a polarity, or sidedness, to its structure and function. Which of the following statements
correctly describes this polarity?
A) Proteins in the membrane of the Golgi may be sorted and modified as they move from one side of the Golgi to
the other.
B) Proteins are synthesized on ribosomes which are attached to Golgi’s membrane.
C) The polarity is used to sort and modified lipids from one side of the Golgi to the other.
D) Golgi has double membranes, one is hydrophobic and the other is hydrophilic.
E) Golgi is to digest the food particles occurs in a vesicles.
10. Which of the following is channel protein?
A) proton pump B) Na+XK+ pump C) aquaporin D) phospholipid pores E) None of above
1
, 11.
In which structure you are expected to find the above arrangement of microtubules consisting of nine doublets of
microtubules surrounding a pair of single microtubules?
A) flagella B) centrosome C) centrioles D) actin filament E) basal body of cilia
12. Which of the following is a major cause of the size limits for certain types of cells?
A) the difference in plasma membranes between prokaryotes and eukaryotes.
B) rigid cell walls that limit cell size expansion
C) the need for sufficient surface area to support the cell's metabolic needs
D) limitation on the strength and integrity of the plasma membrane as cell size increases
E) evolutionary progression in cell size; more primitive cells have smaller sizes.
13. Thylakoids, DNA, and double membrane are all components found in .
A) mitochondria B) chloroplasts C) nuclei D) lysosomes E) peroxisomes
14. What is the most likely pathway taken by a newly synthesized protein that will be secreted by a cell?
A) ER→Golgi→nucleus
B) Golgi→ER→lysosome
C) ER→lysosomes→vesicles that fuse with plasma membrane
D) nucleus→ER→Golgi
E) ER→Golgi→vesicles that fuse with plasma membrane
15. White blood cells engulf bacteria through what process?
A) exocytosis. B) pinocytosis. C) osmosis. D) receptorXmediated exocytosis. E) phagocytosis.
16. What is the voltage across a membrane called?
A) water potential D) osmotic potential
B) electrochemical gradient E) membrane potential
C) chemical gradient
17. The membranes of winter wheat are able to remain fluid when it is extremely cold by
A) increasing the percentage of unsaturated phospholipids in the membrane.
B) cotransport of glucose and hydrogen.
C) decreasing the number of hydrophobic proteins in the membrane.
D) increasing the percentage of cholesterol molecules in the membrane.
E) decreasing the number of transmembrane proteins.
18. Singer and Nicolson's fluid mosaic model of the membrane proposed that membranes .
A) consist of a mosaic of polysaccharides and proteins.
B) are a single layer of phospholipids and proteins
C) are a phospholipid bilayer between two layers of hydrophilic proteins
D) consist of protein molecules embedded in a fluid bilayer of phospholipids
E) None of above
19. Osmosis is the process of .
A) water transport across membrane. D) solute diffuse in solvent.
B) H+ transport across membrane. E) water diffuse in solute.
C) water diffuse in ponds.
2
