MULTIPLE CHOICE QUESTIONS:
- Metallothionein was discovered in – by Margoshes and Vallee.
a.1822
b.1765
c.1957
d.1947
- The molecular mass of metallothionein is
a.2-4kDa
b.2-3kDa
c-7-8kDa
d.6-8kDa
- The molecule of MT is made up of – Amino acids.
a.10
b.61
c.45
d.80
- They are very stable and bind to metals via metal-
a.Thiolate bonds
b.hydrogen bond
c.sulphur bond
d.double bond
- The main function of MT is to regulate the metabolically important metals such as-
a.Al
b.Cu and Zn
c.Hg
d.Fe
- The fish MT is more thermal sensitive than- MT.
a.reptiles MT
b.amphibian MT
c.birds MT
d.mammalian MT
- Scientific name of Turbot is:
a) Cyprinus carpio
b) Solea Solea
c) Scophthalmus Maximus
- Scientific name of Carp is:
a) Cyprinus carpio
b) Solea Solea
c) Oncorhynchus mykiss
d) Danio rerio
- 3) Scientific name of Gold fish is:
a) Solea Solea
b) Danio rerio
c)Carassius Auratus
- Onchorynchus mykiss is:
a) Tilapia
b) Rainbow trout
c) Sole
d) Gold fish
- Increase in metallothionein level is the _________ response to the extent of heavy metals.
a) Direct
b) Indirect
c) None
- King and Olsson characterized the____ metallothionein genes:
a) 1
b) 2
c) 3
d) 4
- The four metallothionein genes share common regions:
a) promoter
b) accelerator
c) reactor
d) None
- Metal responsive elements effectively bind ____
a) MTs
b) MTF
c) both
d) None
- _____ contains a large number of proteins that carryout metabolic transformation
a) Cytochrome P450
b) CO- Fe
c) both
