Auxotroph culture (His- and Lac-) culture of E. coli was mutagenised. On what media would one spread the mutagenised cells to select prototroph for both His+  and Lac+ cells?

TLS Online TPP Program

#Question id: 11743

#XL - R Botany

The wall between the two mature sieve tube elements contain a sieve plates, these sieve plate pores are open —that is, unobstructed by

TLS Online TPP Program

#Question id: 379

#XL - S Microbiology

A compound has a pKa of 7.4. To 100 mL of a 1.0 M solution of this compound at pH 8.0 is added 30 mL of 1.0 M hydrochloric acid. The resulting solution is pH:

TLS Online TPP Program

#Question id: 19632

#XL - P Chemistry

For the reversible reaction

N2 (g) + 3H2(g) ⇋ 2NH3 + Heat

The equilibrium shifts in forward direction

TLS Online TPP Program

#Question id: 6958

#XL - T Zoology

Vg-1 and wnt are used in both frogs and chicks to establish a body axis, although in chicks this is the antero-posterior axis instead of the dorso-ventral axis. What is the region of the chick embryo that is thus analogous to the Nieuwkoop center?

TLS Online TPP Program

#Question id: 757

#XL - Q Biochemistry

_______________ a bacterial enzyme, uses the energy of ATP hydrolysis to introduce negative supercoiling into DNA hence removing positive supercoiling generated during replication.