B1.2.1 - DNA Flashcards Preview

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Flashcards in B1.2.1 - DNA Deck (24):
1

Where is DNA located in prokaryotic cells?

The nucleus

2

What is a chromosome?

A long molecule of DNA

3

How many chromosomes are there in each of your cells?

46

4

How many chromosomes do chickens have?

78

5

How many chromosomes do you inherit from your parents?

Half from each of them

6

What are the only organisms that share the same DNA?

Identical twins / clones

7

What is DNA arranged in?

Small sections

8

What are the short sections in DNA that code for a characteristic called?

Genes

9

What does a code that a gene contains create?

Specific proteins

10

What do the proteins made from the codes in genes determine?

How the cell functions

11

What binds to oxygen in red blood cells in order for it to be transported around the body?

Protein haemoglobin

12

What do the genes in an organism control?

What an organism looks like and how it functions

13

What is DNA made of?

2 strands

14

What are the strands in DNA joined by?

Bases

15

What shape do the strands in DNA form when twisted together?

Double helix

16

What are the monomers in DNA?

Nucleotides

17

Why is DNA a polymer?

It is made up of many monomers

18

What are nucleotides made of?

Deoxyribose sugar
Phosphate
Base

19

What are the 4 bases in nucleotides called?

Adenine
Thymine
Guanine
Cytosine

20

How do the strands of DNA hold together?

The bases from each strand bond with the bases on the other strand

21

What is a base pair?

A pair of bases joined together, each from a different strand of the same DNA

22

What is complementary base pairing?

The process of bases from different strands of the same DNA bonding together

23

What does adenine combine with?

Thymine

24

What does cytosine combine with?

Guanine