Transcript ch7 quiz - Harford Community College

1. The smallest living unit is a _____.
A. proton
B. molecule
C. cell
___
D. tissue
2. All cells come from preexisting cells.
True
___
False
3. All living organisms are multicellular.
True
False
___
4. A large cell has more surface area to volume than
a small cell.
True
___
False
5. The surface area of a cell _____.
A. must be large enough to allow adequate
nutrients to enter
B. may be increased by modifications of the
plasma membrane
C. must be of adequate size to allow for waste
disposal
___
D. all of the above
6. The smallest cells are _____.
A. viruses
B. bacterial
___
C. animal
D. plant
7. The magnification capability of a transmission
electron microscope is much greater than that of a
light microscope.
True
___
False
8. Bacterial cells are easily seen without a
microscope.
True
___
False
9. Which of the following is NOT a feature of
bacterial cells?
A. cell wall
B. plasma membrane
___
C. nucleus
D. ribosomes
10. Photosynthetic bacteria (cyanobacteria) contain
______.
A. chloroplasts
B. thylakoids
___
C. mitochondria
D. centrioles
11. Bacteria are prokaryotic cells, which means that
they lack a nucleus.
___
True
False
12. Bacterial cells do not contain DNA.
True
___
False
13. Protein synthesis in a bacterial cell is done by
_____.
A. ribosomes
___
B. centrioles
C. flagella
D. thylakoids
14. Motile bacteria move by means of ______.
A. cilia
B. plasmids
___
C. flagella
D. pseudopods
15. The DNA of a bacteria is located in the _____.
___
A. nucleoid
B. mitochondria
C. ribosomes
D. nucleolus
16. Bacterial cells may have accessory rings of DNA
called plasmids.
___
True
False
17. The regulation of molecule movement in and out
of the cell is done by the _____.
A. capsule
B. plasma membrane
___
C. cell wall
D. nucleoid
18. In photosynthetic bacteria (cyanobacteria) the
light-sensitive pigments are found in chloroplasts.
True
___
False
19. The outermost boundary of prokaryotic cells is
their _____.
A. plasma membrane
B. nuclear envelope
C. cytoplasm
D. cell wall
___
20. The simple structure of bacteria limits where
they can live and what material they can use for
energy.
True
False
___
21. The DNA of eukaryotic cells is contained within
a true nucleus.
True
___
False
22. Smooth endoplasmic reticulum has attached
ribosomes.
True
___
False
23. The organized lattice of protein filaments inside
the eukaryotic cell is known as the _____.
A. cytoskeleton
___
B. cell wall
C. RER
D. Golgi apparatus
24. Which of the following is found only in plant
cells?
A. ribosomes
B. mitochondria
C. centrioles
D. chloroplasts
___
25. The post office could be used as an analogy for
the _____ because of its processing, packaging and
distribution
functions.
A. plasma membrane
___
B. Golgi apparatus
C. chloroplast
D. nucleolus
26. Which of the following has a cell wall?
A. plant cell
B. bacterial cell
C. animal cell
D. both A and B
___
27. The contents of an animal cell are separated from
its environment by the _____.
A. plasma membrane
___
B. cell wall
C. nuclear envelope
D. SER
28. The cell wall of a plant cell cannot be
distinguished from the cell wall of a bacterial cell.
True
___
False
29. The endosymbiotic hypothesis attempts to
explain _____.
___
A. the origin of chloroplasts and mitochondria
B. how cells reproduce
C. how photosynthesis occurs
D. the differences between plant and animal
cells
30. Which of the following supports the
endosymbiotic hypothesis?
A. The shape and size of mitochondria and
chloroplasts are similar to bacteria's.
B. Mitochondrial and chloroplast DNA is a
circular loop like that of bacteria.
C. Mitochondrial and chloroplast ribosomes
resemble those of bacteria.
___
D. all of the above
31. Some scientists believe mitochondria and
chloroplasts may have been bacteria that were
engulfed by a larger cell.
True
___
False
32. Chromatin contains __________.
A. DNA
B. protein
C. RNA
D. all of the above
___
33. All types of _____ are produced in the nucleus.
A. proteins
B. carbohydrates
C. RNA
___
D. lipids
34. The _____ participates in ribosome synthesis and
is found in the nucleus
A. plasma membrane
B. SER
C. Golgi apparatus
D. nucleolus
___
35. The nuclear envelope does not allow anything to
enter or exit the nucleus.
True
False
___
36. Ribosomes are found in prokaryotic and
eukaryotic cells.
True
___
False
37. Ribosomes are found _____.
A. within the cytosol
B. attached to endoplasmic reticulum
C. in the nucleus
D. both A and B
___
38. Ribosomes _____.
___
A. synthesize proteins
B. contain the DNA
C. synthesize lipids
D. store hydrolytic enzymes
39. Which of the following is a function of the
smooth endoplasmic reticulum?
A. steroid synthesis
___
B. solar energy absorption
C. enzyme synthesis
D. ATP synthesis
40. Proteins are modified, sorted and packaged by
the _________.
A. plasma membrane
B. mitochondria
___
C. Golgi apparatus
D. SER
41. Plant cells are supported by their cell wall and a
central vacuole.
___
True
False
42. Bacteria that are engulfed by a white blood cell
will be destroyed by hydrolytic enzymes inside
________________.
A. ribosomes
B. lysosomes
___
C. chloroplasts
D. centrioles
43. A plant's leaf cell can be distinguished from other
cells by the large number of _____ it contains.
A. chloroplasts
___
B. centrioles
C. nuclei
D. plasmids
44. Chloroplasts will be found in _____.
A. plant cells
B. algal cells
C. animal cells
D. both A and B
___
45. Solar energy is used to synthesize carbohydrates
in the mitochondria.
True
___
False
46. Chlorophyll, the pigment that captures the sun's
energy, is found in the _____.
A. stroma
B. thylakoids
___
C. cristae
D. matrix
47. The energy in carbohydrates is transformed into
ATP in the _____.
A. mitochondria
___
B. nucleus
C. Golgi apparatus
D. chloroplasts
48. Skeletal muscle cells will have a large number of
_____ due to their high demand for energy.
A. chloroplasts
B. lysosomes
C. flagella
D. mitochondria
___
49. The large surface area needed for the participants
in cellular respiration is provided by the _____ of the
mitochondria.
A. stroma
B. thylakoids
C. cristae
___
D. matrix
50. Plant and algal cells have chloroplasts and
mitochondria.
___
True
False
51. Our bones and muscles are comparable to a cell's
_____.
A. nucleus
B. plasma membrane
___
C. cytoskeleton
D. lysosomes
52. Mitochondria are able to synthesize some of the
proteins needed for cellular respiration with their
own DNA and
ribosomes.
___
True
False
53. Sperm cells move by means of _______.
___
A. flagella
B. cilia
C. pseudopods
D. actin filaments
54. Debris that is trapped in mucus is moved away
from the lungs toward the throat by _____.
A. flagella
___
B. cilia
C. pseudopods
D. actin filaments
55. Plant and fungal cells contain centrioles.
True
___
False
56. The cytoskeleton of the cell functions to
________________.
A. maintain cell shape
B. anchor organelles
C. allow organelles to move
D. all of the above
___
57. Actin filaments interact with motor molecules to
create movement of the cell.
___
True
False
58. Which of the following will NOT be found in
abundance in an insulin producing pancreas cell?
A. RER
B. Golgi apparatus
___
C. chloroplasts
D. ribosomes
59. Prokaryotes are the least adaptable and least
successful forms of life on earth.
True
___
False
60. Prokaryotic cells are highly compartmentalized.
True
False
___