The four covalent bonds in methane (CH4) are arranged around carbon to give which one of the following geometries?

TLS Online TPP Program

#Question id: 15638

#SCPH01 Biochemistry

You have isolated two mutations that show decreased expression of the Lac operon. However, unlike like the promoter mutations, these mutations don’t respond to the inducer IPTG. These mutations, designated Lac3– and Lac4–, are evaluated for the quantity of ß-galactosidase and permease activity expressed with or without IPTG:

 

Mapping experiments reveal that Lac3– and Lac4– are different short deletions located in the region before the start of the LacZ gene. Given the data shown above suggest which genetic element(s) in addition to part of the promoter has been deleted in each mutant. 

TLS Online TPP Program

#Question id: 11524

#SCPH06 I Botany

Which of the following is consider as a first plant hormone ?

TLS Online TPP Program

#Question id: 11281

#SCPH28 | Zoology

Owls eat rats, mice, shrews, and small birds. Assume that, over a period of time, an owl consumes 5,000 J of animal material. The owl loses 2,300 J in feces and owl pellets and uses 2,500 J for cellular respiration. What is the production efficiency of this owl?

TLS Online TPP Program

#Question id: 367

#SCPH05 I Biotechnology

1.0 × 10^−4 mole of H+ (as HCl) is added to 1.0 liter of pure water. Determine the final pH of the solution.

TLS Online TPP Program

#Question id: 19376

#SCPH28 | Zoology

As transgene products participate in the cell physiology and biochemistry. Therefore, they are likely to generate