Proteins

Question 1

Proteins

Answer 1

Polypeptides made of amino acids, which are linked by peptide bonds

Question 2

Gene expression

Answer 2

Process by which DNA directs the synthesis of proteins

Question 3

Flow of genetic information

Answer 3

DNA–>RNA–>Protein
transcription–>translation

Question 4

Transcription

Answer 4

The synthesis of RNA using info from DNA, occurs in the nucleus

Question 5

Translation

Answer 5

The synthesis of polypeptides using information from RNA

Question 6

Types of RNA

Answer 6

1. Messenger RNA (mRNA)
2. Ribosomal RNA (rRNA)
3. Transfer RNA (tRNA)

Question 7

Messenger RNA

Answer 7

-Synthesized during transcription
-mRNA carries information from the DNA to the ribosomes in the cytoplasm

Question 8

Transfer RNA

Answer 8

-Transfer RNA molecules are important in translation
-tRNA carries specific amino acids
-Attaches to mRNA via their anticodon

Question 9

Ribosomal rRNA

Answer 9

-rRNA helps to form ribosomes
-Helps link amino acids together

Question 10

Triplet code

Answer 10

-nucleotides read in groups of three
-mRNA molecules formed nucleotide triplets are called codons

Question 11

Template strand

Answer 11

In transcription the one DNA strand being transcribed

Question 12

Redundancy

Answer 12

More than one codon code for each amino acid, but codons can only BE one amino acid

Question 13

Why is redundancy important?

Answer 13

Lessens the likelihood of harmful mutations