13.1 And 13.2 Test

Question 1

Messenger RNA

Answer 1

The molecules that carry copies of instructions for assembling amino acids into proteins

Question 2

Ribosomal RNA

Answer 2

Proteins are assembled on ribosomes, small organelles composed of 2 subunits. These subunits are made up of several rRNA molecules

Question 3

Transfer RNA

Answer 3

The molecules that transfer each amino acid to the ribosome as it is specified by the coded messages in mRNA

Question 4

Transcription

Answer 4

DNA–> RNA

Segments of DNA serve as templates to produce complementary RNA molecules

Question 5

RNA polymerase

Answer 5

The enzyme required for transcription. Binds to DNA during transcription and separates the DNS strands

Question 6

Promoters

Answer 6

Regions of DNA that have specific base sequences. RNA polymerase binds only to this

Question 7

Introns

Answer 7

The portions of pre mRNA that are cut out and discarded

Question 8

Exons

Answer 8

The remaining pieces after introns are pulled from pre-mRNA

Question 9

Polypeptide

Answer 9

Amino acids joined together in long chains , that make up proteins

Question 10

Genetic code

Answer 10

A C U G

Question 11

Codon

Answer 11

Each 3 letter word in mRNA

Question 12

Translation

Answer 12

The deciding of an mRNA message into a protein

Question 13

Anti codon

Answer 13

Each tRNA molecule had 3 unpaired bases, collectively called the anticodon

Question 14

Gene expression

Answer 14

The way DNA,RNA, and proteins are involved in putting genetic information into action in living cells

Question 15

RNA

Answer 15

A nucleic acid that consists of a long chain of nucleotides