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Cell Biology Revision

134 Questions  I  By [email protected]
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1.  Muscle fibres are made up of ____
2.  In density gradient centrifugation, a shallow sucrose gradient is
A.
B.
C.
3.  In animals, hormones are produced by the ____ system
4.  Name the proteoglycan present in the basal lamina
5.  Microtubules are ___ - made up of alpha and beta tubulin
6.  The phosphorylation of ____ causes ___ rotation of the flagella
7.  Myofibrils are made up of chains of ____
8.  Phospholipids are ___ lipids - they have a hydrophilic and hydrophobic end.
9.  Human eye resolution is ____ nm
10.  Name three types of immortal cell line
11.  During protein glycosylation, the original oligosaccharide added is ____
12.  Name the 2 accessory proteins which form links between microtubules in the axoneme (alphabetically)
13.  ___ are from the death cap toadstool
14.  In carrier proteins, when it transports two different molecules in the same direction it is called ___
15.  What is the name of the protein associated with the cytoplasmic side of red blood cell membranes?
16.  The enzyme ____ ____ removes the signal sequence
17.  ____ and hydrogenosomes have similarities with mitochondria
18.  FACS Machine stands for:
19.  Clathrin forms ____ shape from intertwined chains
20.  In autophagy, internal organelles are taken into _____ which then fuse with lysosomes
21.  Intermediate filaments are ___nm in diameter
22.  In confocal microscopy, Z sections are computed into _____ and 3D images
23.  The core of cilia/flagella is called the ____
24.  An example of a peroxisomal disorder:
25.  A carbohydrate rich zone of oligosaccharides and associated proteins is called a ___
26.  Nucleus are ____microns in size
27.  In plant cell walls, crytalline cellulose microfilaments are composed of ___
28.  Name a type of cell with a lot of RER
29.  Tight junctions make a seal between ____ cells
30.  Gel filtration chromatography uses ___
31.  _____ form mechanically strong connection between epithelial cells
32.  Light microscope resolution is ___nm
33.  The transmission of information across a membrane is called signal ___
34.  Most plastid genomes are _____kbp, although nonphotosynthetic genomes are reduced e.g. Plasmodium falciparum - ___kbp
35.  The Golgi apparatus is made up of stacks of ____
36.  Intermediate filament keratin is ___kD
37.  Cartilage is mainly composed of ___ and ____ which are produced by _____
38.  Intermediate filament vimentin is ___kD
39.  Three examples of physical signals
40.  ____ and ____ make up the phosphorelay system
41.  What do amyloplasts store?
42.  ____ have small vestigal nucleoids in their plastids
43.  The Z disc is made up of ___ and ___
44.  Signal sequences are ____ amino acids long
45.  Thick filaments are composed of ____
46.  Intermediate filaments have a ___ terminal head and a ____ terminal tail
47.  Name the 3 glycoproteins present in the basal lamina
48.  Antibody IgA binds to the ___ receptor and is taken up by receptor-mediated endocytosis. The antibody and receptor then pass to the ___ ____ and then to the ____ ____
49.  Actin filaments are composed of the globular protein _____
50.  Lysosomes have a pH of ___
51.  The simple protist ____ has been shown to have eubacterial organisation of it mitochondrial DNA
52.  Three examples of chemical signals
53.  ___ which fluoresces blue, can be used to tag DNA
54.  In differential centrifugation, the 3 speeds are:
A.
B.
C.
55.  ______ is polarised endocytosis plus exocytosis
56.  In phagocytosis, after the vesicle has enclosed the phagosome it fuses with the ___ ____ and becomes a ____ ____
57.  Example of a phenolic in plant cell walls is ___
58.  The phospholipids distributed on outside of membranes:
A.
B.
C.
D.
E.
59.  Scleiden and Swann proposed the ___
60.  Name the protein molecule in LDLs
61.  Name the actin filament inhibitor which prevents depolymerisation
62.  Chloroplasts are thought to have arisen from the blue-green algae ____
63.  What is the protein-membrane association called when the protein is covalently bonded to the membrane?
64.  The internal space of a chloroplast is called the ____
65.  One of the things plastid genomes code for is the large subunit of carbon-fixing enzyme ____
66.  The person to first identify the nucleus was ___
67.  Dynein motors:
A.
B.
C.
D.
68.  _____ ______ won the Nobel Prize in 1999 for the discovery of protein signal sequences
69.  Neighbouring plant cells are joined by the ____ _____
70.  ____ (phosphotase enzyme) rapidly dephosphorylates ___ and the flagella rotate ____
71.  ____ - the protein which acts as a template for the length of thin filaments
72.  After contraction of the sarcomere, ___ binds myosin and it releases actin.
73.  An example of transcytosis is the uptake of the ___ antibody by infant from mother's milk
74.  In transmission electron microscopy, a beam of electrons is generated by a tungsten filament and accelerated at ____kV
75.  Molecules which can diffuse through the membrane easily:
A.
B.
C.
D.
76.  Neurofilaments are ___kD
77.  Flagella are found in:
A.
B.
C.
D.
78.  Plastids are found in higher plants, algae and protists such as Apicomplexa e.g. _____ and ____
79.  Name the microtubule inhibitor which prevents polymerisation
80.  SER is involved in ___ and also stores calcium
81.  Chlorophyll fluoresces ___ and lignin fluoresces ___
82.  Ganglioside GM1 acts as a receptor for the bacterial toxin which causes ___
83.  Thin filaments are associated with ____ which is attached to a ____
84.  Microtubules are made up of __ protofilaments
85.  Example of a repellent in chemotaxis
86.  Largest mitochondrial genome is that of ____ - 98 genes
87.  The inner membrane of the nucleus is lined with the fibrous protein ____
88.  In animal cells, extracellular matrices are often linked to underlying cells by the protein ____
89.  Describe the 4 stages of the transition of a bacteria to an organelle.
90.  Smallest mt. genome is that of ____
91.  Name the actin filament inhibitor which prevents polymerisation
92.  In plant cell walls, ____ substances bond with cations to form rigid gels
93.  ____ ______ - disease of faulty LDL receptors
94.  Tropomodulin caps which end of the filament? positive/negative
95.  Plant pigments are generally separated by paper chromatography using a suitable lipid solvent e.g. chloroform
A.
B.
96.  When bacterial flagella rotate clockwise, the movement of the bacteria is
A.
B.
97.  Name the 2 proteins associated with thin filaments
98.  ____ - the movement away/towards a higher concentration of a chemical repellent/attractant
99.  In the gut, apical membranes have ___ ___ of glucose and basolateral membranes have ____ ____ of glucose
100.  ____ signals bind to receptors on the same cell
101.  Coccoliths are scales made of ___ ____ which form the coat of ____ (algae)
102.  The nucleolus is the site of _____
103.  Example of an attractant in chemotaxis
104.  Protein makes up approximately __% of myelin membrane
105.  There are numerous ____ _____ molecules inside an LDL
106.  Peroxisomes are involved in ___ reactions and the removal of ____
107.  Flagella are ____microns long
108.  Electron microscope resolution is ___nm
109.  Name the microtubule inhibitor which prevents disaggregation
110.  Plasmodesmata and gap junctions are approximately ___nm wide
111.  Myofibrils are ___microns in diameter
112.  Protein makes up approximately  __% of the inner membrane of mitochondria
113.  In the bacterial sensing of repellents mechanism, binding of the repellent to a receptor causes the autophosphorylation of ___ via the adaptor protein ____
114.  _____ secrete calcium and phosphate ions for bone formation
115.  Mitochondrial genomes code for enzymes for __ ___ and ___ ____
116.  Resolution is the ability to perceive close objects as separate entities
A.
B.
117.  In cholesterol, the hydrophilic tail and hydrophobic tail are joined by a ___
118.  The polar head of phospholipids consists of 
A.
B.
119.  The basal lamina is an extracellular matrix excreted by ____ cells
120.  Mitochondria are thought to have arisen from the ____ line
121.  Kynesins are double stranded helical coils with ___
122.  Once phosphorylated, ____ transfers its phosphate to ___
123.  _____ - cell takes up small vesicles of non-specific fluid
124.  Name a photosynthetic algae whose plastids have triple/more envelopes
125.  Thylakoid membranes in chloroplasts sometimes form ____
126.  Amorphous hemicellulose makes up ___% of plant cell walls
127.  Name a type of cell with a lot of SER
128.  ____ signals bind to receptors on neighbouring cells
129.  Lysosomes are not the main protein degrader as cells have specialised ____ for this function
130.  Name a group of enzymes involved in drug detoxification in SER
131.  Gap junctions are made up of 2 hexamers called ____
132.  Microtubules are ___nm in diameter
133.  Signal sequences bind to the ____ _____ _____ which then binds to a receptor on the ER
134.  Actin filaments are ___nm in diameter
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