Practice Questions

TLS Online TPP Program

#Question id: 12721

There are the five groups of late embryogenesis abundant (LEA) proteins found in plants

Match the following groups of LEA protein with its functional information;

Group (family name)

                           Functional information

I) Group 1

   (D-19 family)

a) It is an abundant protein in cotton embryos, Each putative dimer of this group may bind as many as ten inorganic phosphates and their counterions

II) Group 2

    (D-11 family)

b) Possibly functions in ion sequestration to protect cytosolic metabolism When LE25 is expressed in yeast, it confers salt and freezing tolerance

III) Group 3

     (D-7 family)

c) In tomato, a gene encoding a similar protein is expressed in response to nematode feeding

IV) Group 4

    (D-95 family)

d) Contains more water of hydration than typical globular proteins Overexpression confers water deficit tolerance on yeast cells

V) Group 5

    (D-113 family)

e) Often localized to the cytoplasm or nucleus More acidic members of the family are associated with the plasma membrane May act to stabilize macromolecules at low water potential

#Unit 6. System Physiology – Plant

I-d, II-e, III-a, IV-c, V-b
I-d, II-e, III-a, IV-b, V-c
I-e, II-d, III-a, IV-b, V-c
I-c, II-a, III-e, IV-b, V-d

More Questions

TLS Online TPP Program

#Question id: 4478

#Unit 3. Fundamental Processes

In prokaryotes during abortive initiation, the polymerase synthesizes a series of short transcripts. In eukaryotes, promoter escape involves;

TLS Online TPP Program

#Question id: 4479

#Unit 3. Fundamental Processes

The stepwise assembly of the Pol II preinitiation complex

TLS Online TPP Program

#Question id: 4480

#Unit 3. Fundamental Processes

The reason for TBP’s unorthodox recognition mechanism is

TLS Online TPP Program

#Question id: 4481

#Unit 3. Fundamental Processes

Choose correct statements about recognition mechanism of TBP ;

A. TBP causes the minor groove to be widened to an almost flat conformation

B. It also bends the DNA by an angle of ~120o

C. The interaction between TBP and DNA involves maximum number of hydrogen bonds between the protein and the edges of the base.

D. Much of the specificity is imposed by two pairs of phenylalanine side chains that intercalate between the base pairs at either end of the recognition sequence and drive the strong bend in the DNA.

TLS Online TPP Program

#Question id: 4482

#Unit 3. Fundamental Processes

The General Transcription Factors of RNA Polymerase, with their subunits, select correct matching

A. TBP	1
B. TFIA	11
C. TAFs	2
D. TFIIH	10

TLS Online TPP Program

#Question id: 4483

#Unit 3. Fundamental Processes

TAF42 and TAF62 from Drosophila form a structure similar to that of the