Unit 14

Question 0

Double helix

Answer 0

The shape of DNA

Question 1

DNA stands for…

Answer 1

DeoxyriboNucleic Acid

Question 2

Adenine always joins to…

Answer 2

Thymine

Question 3

Cytosine always joins to…

Answer 3

Guanine

Question 4

Chromosome

Answer 4

DNA tangled together

Question 5

DNA replication process

Answer 5

1. Double helix of DNA splits apart
2. Each single strand creates another strand
3. A’s pair with T’s and c’s pair with G’s
4. Takes about 8 hours

Question 6

Mitosis

Answer 6

Cell division

Question 7

How many chromosomes does a human have?

Answer 7

46 (23 pairs) in each cell.

Question 8

Genes

Answer 8

The DNA sequence coding for specific proteins.

Question 9

Nucleic acids

Answer 9

Slightly acidic; long molecules of nucleotides

Question 10

Nucleotides

Answer 10

Subunits that make up Nucleic acid molecules

Question 11

What are nucleotides made of?

Answer 11

5 carbon sugar (deoxyribose)
Phosphate group
Nitrogenous base

Question 12

Chargaff’s Rule

Answer 12

C’s and G’s; A’s and T’s

Question 13

Rosalind Franklin

Answer 13

Used an X-ray to discover helix shape of DNA

Question 14

James Watson & Francis Crick

Answer 14

Discovered the shape of DNA

Question 15

Strands on DNA are…

Answer 15

Complementary

Question 16

Eukaryotic DNA replication

Answer 16

Can start in hundreds of different places on the DNA molecule at the same time.

Question 17

Telomeres

Answer 17

DNA on the tip of chromosomes; small amount is lost every time the cell divides.