Unit 2

Question 1

What is DNA made up of?

Answer 1

2 long strands

Question 2

What are Nucleotides?

Answer 2

Individual units in a strand of DNA

Question 3

What are Nucleotides composed of?

Answer 3

A phosphate group, a sugar, and a base

Question 4

What are the 4 DNA bases (Nucleotides)

Answer 4

Adenine (A)
Guanine (G)
Thiamine (T)
Cytosine (C)

Question 5

What is the complete DNA sequence called?

Answer 5

The Genome

Question 6

What is Semi-Conservative Replication

Answer 6

DNA would produce two copies that each contained one of the original strands and one new strand.

Question 7

What are Homologous Chromosomes?

Answer 7

Carry the same genes
Have the same length
Same centromere pattern
Same bonding pattern
Carry different forms or alleles of same genes at the same location

Question 8

What is DNA organized into?

Answer 8

Genes

Question 9

What are genes?

Answer 9

Genes carry a code for traits or functions. many genes code for proteins

Question 10

Where is DNA contained?

Answer 10

In the Nucleus

Question 11

What is Chromatin made up of?

Answer 11

DNA & Protein

Question 12

How many chromosomes do humans have?

Answer 12

46

Question 13

What shape is DNA

Answer 13

Spiral/Helix

Question 14

Which nucleotoides are Purines (Double RIngs)

Answer 14

Guanine (G)

Adenine (A)

Question 15

Which nucleotides are Pyrimidines (Single Rings)

Answer 15

Thymine (T)

Cytosine (C)

Question 16

What holds the strands of the DNA together?

Answer 16

Hydrogen Bonds

Question 17

When is DNA replicated?

Answer 17

Interphase

Question 18

What is a DNA/Genetic mutation?

Answer 18

A change in the nucleotide sequence