DNA

Question 0

What does DNA look like in prokaryotes?

Answer 0

It is double stranded and circular.

Question 1

What does DNA look like in eukaryotes?

Answer 1

Like a double stranded helix.

Question 2

What are chromosomes?

Answer 2

They are a single piece of coiled DNA. Every chromosome contain thousands of genes.

Question 4

What are genes?

Answer 4

They are situated in the chromosomes and code for traits and amino acids in triplets. The genes that code for amino acids are called codons.

Question 5

What are are nucleotides?

Answer 5

They consist of a base, a deoxyribose or ribose and a phosphate group. This is what makes up the DNA and RNA.

Question 6

What bases are there in DNA?

Answer 6

Adenine
Thymine
Guanine
Cytosine

Question 7

What is replication?

Answer 7

It is the DNA copying itself before cell division. The helix is opened up and a two strands move into the middle. The bases are matched with their base pairs and eventually the two strands move apart, forming two double stranded DNA.

Question 8

How many chromosomes does a human have?

Answer 8

46, 23 pairs.