Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 31645
TLS Online TPP Program

#Question id: 4943

In what way were conditions on the early Earth of more than 3 billion years ago different from those on todayʹs Earth?

#Unit 11. Evolution and Behavior

  1. only early Earth had water vapor in its atmosphere.

  2. Only early Earth was intensely bombarded by large space debris.

  3. Only early Earth had an oxidizing atmosphere.

  4. Less ultraviolet radiation penetrated Earthʹs early atmosphere.

More Questions
TLS Online TPP Program

#Question id: 4155

#Unit 3. Fundamental Processes

Of all the possible triplet codons, __ do not code for an amino acid.
TLS Online TPP Program

#Question id: 4156

#Unit 3. Fundamental Processes

The reading frame of DNA is fixed by
TLS Online TPP Program

#Question id: 4157

#Unit 3. Fundamental Processes

At the ribosome, the codon and anticodon associate by __.
TLS Online TPP Program

#Question id: 4158

#Unit 3. Fundamental Processes

What is a reasonable number of nucleotides in a tRNA molecule?
TLS Online TPP Program

#Question id: 4159

#Unit 3. Fundamental Processes

Which statement is not true about the ʺwobbleʺ position?
TLS Online TPP Program

#Question id: 4160

#Unit 3. Fundamental Processes

Different tRNA molecules that bind the same amino acid are called __ tRNA molecules.