An isotone of ₃₂Ge⁷⁶is (i) ₃₂Ge⁷⁷ (ii) ₃₃As⁷⁷ (iii) ₃₄Se⁷⁷ (iv) ₃₄Se⁷⁸.

#Question id: 2151

#XL - S Microbiology

Which of the following statement(s) is (are) true of transmembrane proteins?

a. All contain a hydrophobic α helix.

b. Some serve as membrane attachment sites for peripheral membrane proteins.

c. Some contain more than one membrane-spanning domain.

d. All are asymmetrically oriented in the lipid bilayer.

#Question id: 5295

#XL - S Microbiology

A cross is made between an Hfr that is met+ thi+ pur+ and an F-that is met- thi- pur-. Interrupted mating studies show that met+ enters the recipient last, so met+ recombinants are selected on a medium containing supplements that satisfy only the pur and thi requirements.  These recombinants are tested for the presence of the thi+ and pur+ alleles. The following numbers of individuals are found for each genotype:

What is the following correct combination?

#Question id: 1065

#XL - T Zoology

Resistance of some animals to certain viral diseases is based on

#Question id: 18521

#XL - R Botany

Santalum album is having 

#Question id: 3794

#XL - Q Biochemistry

An input of energy is not required for which of the following steps of replication?