Chapter 3. Life Cycle of a Protein

Animation Activities

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Animation Activity 3-31: Life Cycle of a Protein

Which targets a protein to the 26S proteasome for degradation?

a chaperone protein

a destruction sequence

actin

a ubiquitin chain

a ribosome

Correct.

Incorrect.

Try Again.

Proteins are synthesized:

in the nucleus.

on the nuclear membrane.

on the ribosome.

within a chaperone.

on the cellular membrane.

Correct.

Incorrect.

Try Again.

The lifespan of a protein is determined by:

the amino acid sequence at its N-terminus or the presence of a destruction sequence.

its interaction with a chaperone protein.

the amino acid sequences at both the N- and C-termini.

the length of its ubiquitin chain.

None of the above is correct.

Correct.

Incorrect.

Try Again.

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Introduction