8.4

Question 1

How much percent of DNA codes for proteins?

Answer 1

1%

Question 2

What is a codon?

Answer 2

Every three letter that code for amino acid.

Question 3

Code redundant

Answer 3

several codes per amino acid.

Question 4

mRNA

Answer 4

contains the code for amino acid sequence.

Question 5

tRNA

Answer 5

transfer amino acids contain anticodon that pair with RNA to put proteins in order.

Question 6

rRNA

Answer 6

matching mRNA and tRNA, join amino acids to synthesize proteins.

Question 7

A site

Answer 7

Anticodon to codon

Question 8

P site

Answer 8

peptidyl tRNA site, create polypeptide.

Question 9

E site

Answer 9

exit site, tRNA leaves.

Question 10

What is a mutation?

Answer 10

Change in base of DNA

Question 11

cause of mutations

Answer 11

DNA replication, mutagens; radiation and some chemicals, and viral infections.

Question 12

Point mutation

Answer 12

Substitution of a single base.

Question 13

Wild type

Answer 13

normal DNA

Question 14

Silent mutation

Answer 14

No affect on amino acid, there is a change but due to code being redundant, doesn’t change amino acid.

Question 15

Missense mutation

Answer 15

changes the amino acid to another

Question 16

Nonsense mutation

Answer 16

make a stop codon

Question 17

Frameshift

Answer 17

add or remove a base in DNA, RNA and changes all proteins after the add/remove base.

Question 18

translation

Answer 18

mRNA to proteins

Question 19

start codon is

Answer 19

Met

Question 20

DNA is TACCATCGA, what is proteins

Answer 20

Met, VAL, Ala