2008- 6- 22
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#35
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أكـاديـمـي فـضـي
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رد: studying biology with الهوجاس خاص لـ nurses
Cell structure
1. A mature human cell could be:
a. with out nucleus
b. with a single nucleus
c. multinucleated
d. all are correct #
2. The eukaryote cell:
a. has distinct organelles that carry out specific functions #
b. lacks a distinct nucleus and organelles
c. DNA molecule is not surround by membrane
d. contains ribosomes and nucleoid
3. Which of the following is not correct considering the cell theory:
a. all organisms consist of one or more cells
b. all cells have cytoplasm and membranes #
c. all cells arise from pre-existing cells
d. cells are basic units of life
4. Which of the following pairs is not matched?
a. prokaryotic cell - nucleoid
b. Golgi apparatus – packaging and secretion
c. nucleolus – eukaryotic cell
d. lysosomes – prokaryotic cell #
5. The endoplasmic reticulum:
a. has two different surfaces
b. is associated with protein synthesis
c. has sites for lipid synthesis
d. all of the above are correct #
6. Ribosomes are:
a. attached to the rough endoplasmic reticulum
b. concerned with the synthesis of proteins
c. free or attached to membranes
d. all of the above are true #
7. Which of the following is / are true about cilia and flagella:
a. are not of the same length
b. are locomotry organs
c. have (9 + 2) micro-tubular arrangement
d. all of the above are true #
8. All of the following are characteristics of mitochondria, except:
a. production of ATP for cell needs
b. have cristae
c. site of lipid synthesis #
d. have double membrane
9. Component of the cell cytoskeleton are:
a. centriole
b. microfilament
c. microtubules
d. both (b) and (c) are true #
10. Every living cell has a:
a. plasma membrane @
b. lysosome
c. mitochondrion
d. cilia or flagella
In questions 4 –7, match an organelle to each function in the table:
a- cellular respiration b- lipid synthesis
c- protein synthesis d- surround cell ****************************s
4- plasma membrane (d)
5- ribosomes (c)
6- smooth endoplasmic reticulum (b)
7- mitochondrion (a)
8- Inner membrane of mitochondrion is infolded to form:
a- cristae @
b- villi
c- cisternae
d- micro-villi
9- A cell without lysosomes would have difficulty [صعوبة] in:
a- producing short chain polypeptides and amino acids.
b- processing, packaging and secretion of macromolecules
c- digesting food particles @
d- appropriate movement.
10- Which pair of the following structures is generally found in both, eukaryotic and
prokaryotic cells?
a- nucleolus and cell membrane
b- ribosomes and cell membrane @
c- mitochondria and cell membrane
d- nucleus and cell wall
11- The “power houses” of the cell are:
a- cytoskeleton
b- endoplasmic reticulum
c- mitochondria @
d- lysosomes
12- Which one of the following not included in the cytomembrane system?
a- vesicles
b- Golgi bodies
c- lysosomes
d- plasma membrane @
13- Cilia and flagella have the following type of micro-tubular arrangement:
a- (9 + 0)
b- (9 + 2) @
c- (9 + 4)
d- (9 + 6)
In questions 4 –7, match an organelle to each function in the table:
a- cellular respiration b- protein synthesis
c- control center of the cell d- surround cell ****************************s
4- mitochondrion (a)
5- nucleus (c)
6- ribosomes (b)
7- plasma membrane (d)
8- The internal folds of the inner mitochondrial membrane are called:
a- cytoskeleton
b- cristae #
c- cilia
d- centrosome
9- A cell without lysosomes would have difficulty [صعوبة] in:
a- producing short chain polypeptides and amino acids.
b- processing, packaging and secretion of macromolecules
c- digesting food particles #
d- appropriate movement.
10- Which of the following is a membranous structure in the cell?
e- nucleous
f- endopasmic reticulum #
g- ribosome
h- chromosome
11- A mitochondrion:
a- is surrounded by two membranes
b- is considered as a site of ATP production
c- contains its own DNA
d- all of the above #
12- Of the endomembrane system organelles are:
a- mitochondria and lysosomes
b- endoplasmic reticulum and Golgi bodies #
c- nucleolus and plasma membrane
d- cilia and flagella
13- The microtubule array of a flagellum arises [تنشأ] from a:
a- basal body #
b- centromere
c- kinetochore
d- chromosome
10. New cells arise:
a. from tissues
b. from pre-existing cells
c. from abiotic (غير حى) materials
d. by regeneration (تجديد ) of organelles
11. Presence of ………… differentiate a prokaryotic cell from a eukaryote one.
a. plasma membrane
b. DNA molecules
c. ribosomes
d. nucleus
12. One item of the cell theory states that:
a. all cells have nuclei
b. all cells are living
c. cells have different organelles
d. cells are basic units of life
13. Which pair of the following structures is generally found in both, eukaryotic and prokaryotic cells?
a. mitochondria and cell membrane
b. ribosomes and cell membrane
c. nucleus and cell membrane
d. nucleus and cell wall
14. Eukaryotic cell organelles are found in the:
a. cytoplasm
b. nucleoplasm
c. nucleus
d. cytoskeleton
15. The organisms which are made of single cell only are called:
a. unicellular organisms
b. multicellular organisms
c. living organisms
d. prokaryotic organisms
16. Cilia and flagella have the following type of micro-tubular arrangement:
a. (9 + 0)
b. (9 + 1)
c. (9 + 2)
d. (9 + 3)
17. Both ………… and ………. are non membranous cell organelles.
a. nucleus – rough endoplasmic reticulum
b. Golgi bodies – mitochondria
c. cytoskeleton – centrioles
d. smooth endoplasmic reticulum - ribosomes
18. The types of cells are:
a. prokaryote and bacteria
b. animal and plant
c. prokaryote and eukaryote
d. eukaryote and amoeba
19. Which organelle below has its own DNA?
a. lysosome
b. ribosome
c. Golgi body
d. mitochondrion
20. Inside the cell, modification of proteins and lipids occurs finally in the:
a. ribosomes
b. mitochondria
c. Golgi apparatus
d. endoplasmic reticulum
21. The nucleoulus is rich in:
a. DNA and proteins
b. DNA and lipids
c. RNA and lipids
d. RNA and proteins
22. Microtubules of the cell:
a. are components of cilia and flagella
b. make up the cell’s cytoskeleton
c. help hold adjacent (متجاورة ) cells together
d. both a and b are true
23. Which one of the following structures has an important role towards both the cell shape and cell movement?
a. cytoskeleton
b. cytoplasm
c. nucleus
d. cytomembrane system
24. Lysosomes function directly in:
a. cellular respiration
b. synthesis of carbohydrates
c. intracellular digestion
d. intracellular transportation
7. Plant cells not animal cells are characterized by :
a. cell wall.
b. Golgi bodies.
c. plasma membrane.
d. nucleus.
8. Which of the following has triples of microtubular arrangement?
a. flagella.
b. cilia.
c. basal body.
d. both a and b are true.
9. Eukaryotic DNA is contained inside the:
a. Golgi bodies.
b. ribosomes.
c. nucleus.
d. endoplasmic reticulum.
10. Inside the cell the main site for lipid synthesis is:
a. cytoplasm.
b. smooth ER.
c. Golgi bodies.
d. rough ER.
11. The folds of the inner membrane of the mitochondrion are called:
a. endoskeleton.
b. cytoskeleton.
c. cristae.
d. grana.
12. Lysosomes are directly associated with:
a. protein synthesis.
b. lipid synthesis.
c. interacellular digestion.
d. both a and b are true.
25. In the cell theory which of the following statements is not correct:
a. cell is the basic unit of life
b. all organisms are composed of cells
c. new cells arise from pre-existing cells
d. DNA molecules are present inside the nucleus *
26. The power house of the cell is an organelle named as:
a. Golgi body
b. mitochondrion *
c. smooth endoplasmic reticulum
d. ribosome
27. In the cell, centers for protein synthesis are the:
a. mitochondria
b. lysosome
c. ribosomes *
d. centriole
28. Which of the following are prokaryotes?
a. bacteria *
b. fungi
c. protistans
d. plants
29. Proteins are transported out of the cell through:
a. exocytic vesicles *
b. endocytic vesicles
c. diffusion
d. osmosis
30. ………… has significant role (دور هام) in the synthesis of lipids.
a. cytoplasm
b. rough endoplasmic reticulum
c. smooth endoplasmic reticulum *
d. Golgi bodies
31. Eukaryotic DNA molecules are found in:
a. nucleus *
b. plastids
c. nucleolus
d. centriole
32. The prokaryotic cells are characterized by:
a. a distinct nuclear membrane
b. absence of chromatin material
c. presence of chromosomes
d. absence of nuclear membrane *
33. Plant cells have a ………… external to the plasma membrane.
a. cytosol
b. cell wall *
c. cell membrane
d. DNA molecules
34. Peroxisomes are cocerned with:
a. degradation of hydrogen peroxide *
b. conversion of lipid into sugar
c. conversion of carbohydrates into lipid
d. synthesis of hydrogen peroxide
35. The function of the ……….is final modification of lipids and proteins.
a. lysosomes
b. peroxisome
c. smooth endoplasmic reticulum
d. Golgi bodies *
36. The organelle which give the cell it’s characteristic shape and structure composed of:
a. microtubules
b. intermediate filaments
c. microfilaments
d. all of these *
37. The inner membrane of mitochondria composed of folds structure which are called:
a. cristae *
b. endoskeleton
c. cytoskeleton
d. grana
38. Nucleoid is present in:
a. plant cell
b. animal cell
c. bacterial cell *
d. eukaryotic cell
39. ………… is responsible for both the cell shape and the cell movement.
a. cytomembrane system
b. cytosol
c. cytoskeleton *
d. nucleus
40. The two organelles that directly involved in protein synthesis are:
a. endoplasmic reticulum and mitochondria
b. endoplasmic reticulum and ribosomes *
c. lysosomes and ribosomes
d. Golgi bodies and lysosomes
41. An organelles where most ATP production occurs are called:
a. Golgi bodies
b. mitochondria *
c. lysosomes
d. ribosomes
42. …………. is the region where ribosomal unit’s are produce.
a. lysosome
b. nucleoid
c. nucleolus *
d. cytoskeleton
43. The organelles means:
a. are membrane-bound compartments
b. are typical of eukaryotic cells, not prokaryotic cells
c. separate chemical reactions in time and space
d. all of the above are features of the organelles *
44. All of the following are components of the cytomembrane system except:
a. endoplasmic reticulum
b. vesicles
c. Golgi bodies
d. ribosomes *
45. A cellular organelle which is found in both mice and bacteria is the:
a. endoplasmic reticulum
b. ribosomes *
c. Golgi bodies
d. nucleolus
46. Vesicles may bud off:
a. smooth endoplasmic reticulum
b. rough endoplasmic reticulum
c. Golgi bodies
d. all of the above *
47. The cell theory states that:
a. cells are the basic units of life *
b. cells have a plasma membrane
c. mitochondria are present in cells
d. every cell usually has a nucleus
48. An animal cell could be:
a. eukaryotic *
b. prokaryotic
c. a bacterial cell
d. both (a) and (b) are true
49. Of the following which organelle is derived (ينشا من) from the Golgi body:
a. rough endoplasmic reticulum
b. mitochondria
c. lysosomes *
d. ribosomes
50. The (9+2) arrangement of microtubules is found in:
a. centrioles
b. cilia *
c. basal bodies
d. the cytoskeleton
51. Which of the following pairs is not matched:
a. nucleus - DNA
b. lysosomes – lipid synthesis *
c. flagella - locomotion
d. rough endoplasmic reticulum – protein synthesis
52. Which one of the following is not a cell organelle:
a. nucleus
b. Golgi body
c. lysosome
d. cytosol *
53. All of the following are characteristics of mitochondria, except:
a. production of ATP for cell needs
b. presence of cristae
c. presence of inner and outer membranes
d. site of lipid synthesis *
54. Which of these structures is absent in a bacterial cell :
a. DNA
b. nucleoid
c. plasma membrane
d. Golgi bodies *
55. Ribosomes are the site of synthesis of:
a. carbohydrates
b. lipids
c. proteins *
d. starch
56. The function of lysosomes is:
a. protein synthesis
b. synthesis of sugar
c. intracellular digestion *
d. none of the above
57. All cells have a:
a. chloroplast
b. cell wall
c. cell membrane *
d. large central vacuole
58. The cytoskeleton of a cell is made up of:
a. centrioles
b. cilia
c. flagella
d. microfilaments and microtubules *
59. A ……….. is not found in a prokaryotic cell:
a. cell membrane
b. nucleus *
c. ribosome
d. cell wall
60. Cilia and flagella arise from:
a. lysosomes
b. basal bodies *
c. ribosomes
d. smooth endoplasmic reticulum
61. Which organelle below does not belong (ينتمى) to the cytomembrane system, the:
a. endoplasmic reticulum
b. Golgi body
c. lysosome
d. centriole *
62. The fluid part of the cytoplasm of a cell is called:
a. the cytoskeleton
b. an organelle
c. the cytomembrane
d. the cytosol *
63. The …………. plays a significant role (دور هام) in the synthesis of lipids:
a. cytoplasm
b. peroxisome
c. Golgi bodies
d. smooth endoplasmic reticulum *
64. Microtubules of the cell:
a. are components of cilia and flagella
b. make up the cell’s cytoskeleton
c. help hold adjacent cells together
d. both a and b are true *
23. T F Ribosomes are made up of DNA and proteins.
24. T F Centrioles are typically composed of microtubules.
25 T F Cristae are the folds of the inner membrane of the mitochondrion.
64- F Cilia and flagella are of the same length.
65- F The organelle is the basic living unit.
66- T Cells are different in size and shape.
63- F Lysosomes are not part of the endomembrane system.
64- F Cilia and flagella have 9+0 pattern of microtubules
65- T A centrosome has two centrioles.
66- T Cells are different in size and shape.
55. T* F The cells are differ in size and shape.
47. T* F New cells originate (تنشأ ) from pre-existing cells.
48. T F* A fluid portion of the cytoplasm is called the cytoskeleton.
49. T* F Both basal bodies and centrioles have the same structure of microtubules.
51. T F* Smooth endoplasmic reticulum is membrane system that has many ribosomes associated with it.
57. T* F Nuclear pores allow the exchange of materials between the nucleus and the cytoplasm.
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