Causes Of Mutations

Question 1

All forms of _ are caused by mutations

Answer 1

Genetic variation

Question 2

Mutations essential to _

Answer 2

Evolution of species

Question 3

Internal mutations may be caused by _

Answer 3

Mistakes during copying

Question 4

Body checks for copying errors and usually _

Answer 4

Mends them

Question 5

Some copying errors may go undetected and can be _

Answer 5

Passed on to offspring

Question 6

Cancer caused by mutations and some mutagens are also _

Answer 6

Carcinogens

Question 7

Carcinogens are substances that increase risk of _

Answer 7

Cancer

Question 8

When environmental agent enters a cell nucleus and interacts with DNA, DNA becomes

Answer 8

Mutated and damaged

Question 9

Ionizing radiation from X-rays can

Answer 9

Break DNA sequence

Question 10

Break DNA sequence, causing _ within chromosome

Answer 10

Rearrangement

Question 11

Chemicals such as _ are mutagens

Answer 11

Hydrogen peroxide

Question 12

Chemical mutagens change _

Answer 12

Chemistry of DNA

Question 13

Somatic cells are cells other than _ (2)

Answer 13

Sperm

Egg

Question 14

A mutation takes place in _ can lead to cancer

Answer 14

Somatic cells

Question 15

Somatic mutation occurs when the chemical changes the _

Answer 15

DNA blueprint

Question 16

When chemical changes the DNA blueprint, mutated cells _

Answer 16

Divide uncontrollably

Question 17

Some _ are mutagens

Answer 17

STI diseases

Question 18

Infectious and biological agents are (2)

Answer 18

Viruses

Bacteria

Question 19

Viruses and bacteria can cause _

Answer 19

Point mutations

Question 20

Helicobacter pylori is a bacteria that can cause _

Answer 20

Inflammation

Question 21

Helicobacter pylori inflammation damages dna and impairs its _

Answer 21

Repair systems