Lesson 41: Protein Synthesis: Transcription

Where does transcription take place in eukaryotic cells?

• In the endoplasmic reticulum

• In the cytoplasm of the cell

• At the ribosome

• In the nucleus of the cell

During protein synthesis, (a)   RNA (mRNA) carries the DNA code from the nucleus.

(a)   bonds with thymine (DNA) and uracil (RNA).

Following transcription, the mRNA leaves the nucleus and binds to a ____________.

• ribosome

• cytoskeleton

• vacuole

• cell wall

A ____________ is a sequence of three nucleotides on mRNA that codes for an amino acid.

• protein

• nucleotide

• ribosome

• codon

What is the first thing that occurs during transcription?

• Uracil bonds to adenine.

• mRNA nucleotides form a copy of the DNA template.

• The DNA strands unzip.

• Codons are formed.

Cells make proteins using the DNA code. Select all answers below that describe where DNA is located.

• In the cytoplasm of eukaryotic cells

• Within the nucleus of eukaryotic cells

• In the cytoplasm of prokaryotic cells

• Within the nucleus of all cells

Select all answers below that are stages of protein synthesis.

• Translation

• Polymerase

• Helicase

• Transcription

Select all activities below that occur during transcription.

• The mRNA nucleotides are brought in.

• The DNA strands within the nucleus separate.

• Amino acids are assembled into proteins.

• An mRNA strand is constructed using the DNA code.

(a)   has the code for making all the proteins needed by the cell.

Tags

NGSS.HS-LS1-1