Mutations

1, what are the causes of cancer?
A,old age
B, inherited
C, poor diet and life style
D, exposure to cancer-causing chemicals
E, all of the above

2, Some plants carry a mutated gene that produces them from fungus parasite called powdery mildew. What type of mutation is this?
A. Positive
B. Neutral
C. Negative

3. A woman breaks her arm riding motocross.After checking into the hospital,she waits in the emergency room and drinks a glass of water.Eventually the doctor identifies the break with an X-ray and casts the arm.Which of the following is a mutagen that she is exposing herself to?

A. The glass of water
B. The hospital waiting room
C. The chair she sits on
D. The x-rat exam

4, A man is sitting outside of a restaurant on a park bench smoking a cigarette,reading the newspaper.
Which of the following is a mutagen that he is exposing himself to ?

A. The newspaper
B. The cigarette smoke
C. The oxygen he is breathing
D. The park bench

5, Original DNA sequence:TACACCTTGGCGACGACT
Mutated DNA sequence:TACGACCTTGGCGACGACT
Identify the type of mutation above as:substitution,addition,or deletion

A. Substitution
B. Addition
C. Deletion

6, Orginal DNA sequence:TACACCTTGGCGACGACT
Mutated DNA sequence:TACATCTTGGCGACGACT
Identify the type of mutation above as substitution,addition,or deletion

A. Substitution
B. Addition
C. Deletion

7, some people have a mutation which causes blood protein involved in clotting to have a different shape, as a result they have internal and external bleeding (haemophilia).What type of mutation is this ?

A. Positive
B. Neutral
C. Negative

8, which of the following correctly describes mutation ?

A. A change in the base pair sequence of DNA molecule

B. An addition of a base pair of DNA molecule.

C. A deletion in the base pair sequence of DNA molecule

D. A substitution in the pair sequence of DNA molecule

E. All of the above

9, which of the following can result from a DNA mutation?

A. Protein with no longer function
B. The protein will have reduced function
C. The protein will have improved function.
D. All of the above can occur

10. The spirit Bears of coastal British Columbia have a mutation that makes their fur white instead of black, but does not affect their survival.What type of mutation is this ?

A. Positive
B. Neutral
C. Negative