ch 6 part 3 reviews

Question 1

translation

Answer 1

Start codon (AUG) marks the starting point for translation
and sets up the reading frame

Question 2

elongation involve ?

Answer 2

tRNA

Question 3

termination take place when ribosome reaches stop codon such as ?

Answer 3

UAG, UGA,UAA

Question 4

AUG is code for ?

Answer 4

meth

Question 5

Translation – Initiation

Answer 5

1-methionine tRNA binds to starting AUG
2-the large ribosomal subunits joins the complex
3-tRNA is at the p-site

Question 6

_________bind between two amino acid

Answer 6

peptide bind

Question 7

protein is synthsized in the n terminus to C terminus direction true or false ?

Answer 7

true

Question 8

When the ribosome reaches a _________________, a release factor binds instead of an amino acid

Answer 8

stop codon

Question 9

__________release from the complex

Answer 9

polypeptide or protein

Question 10

Mutations

Answer 10

Alterations in the base-pair sequence of an individual’s DNA

Question 11

Types of mutations:

Answer 11

1-mutation in non-sex cell
2-mutation in sex cell

Question 12

mutation in non-sex cell

Answer 12

1-somatic cell
2-NOT passed on along to the next generarion

Question 13

Mutation in sex cell :

Answer 13

-no adverse effect on individual carrying them
-can be passed on the next generation

Question 14

Two major types of changes to DNA may occur:

Answer 14

1-chromosomal aberration
2-point mutation

Question 15

point mutation

Answer 15

only one nucleotide is changed
Replacement of a single base pair with another

Question 16

Replacement of a single base pair with another in mutation which is ?

Answer 16

-silent
-nonsense
-missense

Question 17

insertion or deletion of one nucleotide

Answer 17

frameshift

Question 18

Alteration of entire sections of a chromosome

Answer 18

chromosomal aberration

Question 19

Causes of Mutations

Answer 19

1-Environmental factors such as chemical and radiation
2-spontaneous