Consider the following statements about photosynthesis:

I. Oxygenic photosynthesis uses water as an electron donor.
II. Anoxygenic photosynthesis produces molecular oxygen.

TLS Online TPP Program

#Question id: 39507

#Biochemistry

Concerning PCR:

I. Denaturation occurs at high temperature
II. Annealing involves primer binding
III. Extension is carried out by RNA polymerase

TLS Online TPP Program

#Question id: 39508

#Biochemistry

Regarding transgenic crops:
I. They may reduce the need for chemical pesticides
II. They can raise ecological and ethical concerns
III. They are completely risk-free

TLS Online TPP Program

#Question id: 39509

#Biochemistry

 Assertion (A): DNA polymerase cannot initiate DNA synthesis de novo.
Reason (R): DNA polymerase requires a free 3′-OH group.

TLS Online TPP Program

#Question id: 39510

#Environmental Science

The most penetrating radiation is:

TLS Online TPP Program

#Question id: 39511

#Biochemistry

 Assertion (A): The lac operon is an inducible operon.
Reason (R): The operon is switched on in the presence of lactose.

TLS Online TPP Program

#Question id: 39512

#Biochemistry

Assertion (A): PCR has wide applications in biotechnology and diagnostics.
Reason (R): PCR allows exponential amplification of DNA in vitro.