Practice Questions

TLS Online TPP Program

#Question id: 4128

Which of the following statements about tRNA molecules is false?

#Zoology

A, C, G, and U are the only bases present in the molecule.
Although composed of a single strand of RNA, each molecule contains several short, double-helical regions.
Any given tRNA will accept only one specific amino acid.
The amino acid attachment is always to an A nucleotide at the 3' end of the molecule.

More Questions

TLS Online TPP Program

#Question id: 11127

#Human Biology

As the receptor potential rises higher above threshold, which of the following best characterizes the new frequency of action potentials?

TLS Online TPP Program

#Question id: 11128

#Human Biology

Inhibition of pain signals by tactile stimulation of a skin surface involves which of the following selections?

TLS Online TPP Program

#Question id: 11135

#Human Biology

The three stages of information processing in animals include ________.

TLS Online TPP Program

#Question id: 11136

#Human Biology

Most of the neurons in the human central nervous system are ________.

TLS Online TPP Program

#Question id: 1556

#Human Biology

Which one of these is not a property of Antigen?

TLS Online TPP Program

#Question id: 1557

#Human Biology

which one of these antibody can cross placenta?