DNA

Question 1

Where is the chromosome found?

Answer 1

In the nucleus

Question 2

What is a chromosome?

Answer 2

A rod of DNA that gives instructions

Question 3

How many chromosomes from each of our parents?

Answer 3

23

Question 4

What are genes?

Answer 4

Segments of DNA that give instructions by controlling the proteins

Question 5

What is the shape for DNA called?

Answer 5

Double helix

Question 6

What is the backbone of DNA?

Answer 6

Phosphate (P) and Sugar (S) makes up the side of the double helix.

Question 7

What are the four nitrogen bases?

Answer 7

Adenine (A), Thymine (T), Cytosine (C), and Guanine (G)

Question 8

True or False: Adenine is always paired with Cytosine

Answer 8

True

Question 9

True or False: Cytosine is always paired with Guanine

Answer 9

True

Question 10

How do mutations occur?

Answer 10

A change in a sequence of DNA (A with C instead of T)

Question 11

How are insertion mutations caused?

Answer 11

Caused when one or more nitrogen bases are added to the DNA strand.

Question 12

How are deletion mutations caused?

Answer 12

Caused when one or more nitrogen bases are deleted from the DNA strand.

Question 13

How are substitution mutations caused?

Answer 13

Caused when one more nitrogen bases are replaced in the DNA strand.

Question 14

True or False: Mutations are always to happen during replication.

Answer 14

False

Question 15

With what could some mutations be triggered by?

Answer 15

Exposure to x-rays, ultraviolent light, radioactive materials, and some chemicals.

Question 16

What is the process of copying a DNA molecule to make another DNA molecule called?

Answer 16

Replication

Question 17

DNA nitrogen bases are read in groups of 3 to code for an _______.

Answer 17

Amino acid

Question 18

The amino acids are linked together to make a ____.

Answer 18

protein