Practice Questions

TLS Online TPP Program

#Question id: 1085

Which of the following statements about a G protein signaling pathway is true?

#SCPH06 I Botany

A G protein-coupled receptor bound to GTP is in its active state.
A G protein bound to GTP is in its active state.
A G protein bound to GDP is in its active state.
Hydrolysis of bound GTP by a G protein activates the G protein.

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TLS Online TPP Program

#Question id: 14828

#SCPH05 I Biotechnology

Pili are usually longer than fimbriae and number only one or two per cell. Pili are involved in motility and DNA transfer. The type of motility, called

2. Somersaulting

3. Twitching motility

4. Gliding motility

Which combination from the following is correct?

TLS Online TPP Program

#Question id: 15711

#SCPH28 | Zoology

For the regeneration of a whole plant from a cell or callus tissue, there should be differentiation leading to shoot bud or embryo formation. This may occur through

TLS Online TPP Program

#Question id: 18685

#SCPH01 Biochemistry

Match the items in Group 1 with an appropriate description in Group 2

Group I Group 2

P. UPGMA 1. Protein sequence database

Q. CLUSTALW 2. Phylogenetic Analysis

R. SWISS-PROT 3. 3-D structure visualization

S. RasMol 4. Multiple sequence alignment

TLS Online TPP Program

#Question id: 314

#SCPH28 | Zoology

Which statement explains the cleaning action of soap on greasy dishes?

TLS Online TPP Program

#Question id: 17076

#SCPH06 I Botany

The various advantages of serum-free media could be

1. Improved reproducibility of results from different laboratories

2. Easier downstream processing of products from cultured cells

3. Biassays are free from interference due to serum proteins

4. They permit selective culture of diffrentiated cell types from the heterogeneous cultures

Which of the statements are true?