Mammalian sperm will migrate against the direction of the flow—using CatSper calcium channels (like sea urchin sperm) to sense calcium influx and monitor the direction of the current, this process is known as:

TLS Online TPP Program

#Question id: 3863

#XL - Q Biochemistry

Introns in nuclear pre-mRNAs are excised by:

TLS Online TPP Program

#Question id: 3868

#XL - Q Biochemistry

The sigma factor of E. coli RNA polymerase: 

TLS Online TPP Program

#Question id: 3879

#XL - Q Biochemistry

Which of the following is not usually essential for the catalytic activity of ribozymes?

TLS Online TPP Program

#Question id: 3880

#XL - Q Biochemistry

Which one of the following properties of the L-19 IVS ribozyme is not shared with enzymes that are purely protein?

TLS Online TPP Program

#Question id: 3882

#XL - Q Biochemistry

The reverse transcriptase of an animal RNA virus catalyzes:

TLS Online TPP Program

#Question id: 3883

#XL - Q Biochemistry

Which of the following is correct about reverse transcriptase: