B1.2.1 DNA Flashcards Preview

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Flashcards in B1.2.1 DNA Deck (21):
1

Where is DNA found in an human?

In the nucleus of every cell

2

State the correct term for each long molecule of DNA

A chromosome

3

What fraction of your chromosomes do you inherit from your father ?

1/2

4

What fraction of your chromosomes do you inherit from your mother ?

1/2

5

Where do you inherit your chromosomes from?

Your mother and father

6

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

Genes

7

What does the code in genes, cause to be made?

Specific proteins

8

What do the particular proteins that genes code determine?

The cells function

9

What does the combination of genes in an organism control?

How the organism functions and what it looks like

10

State which is bigger, a chromosome or a gene

Chromosome

11

Describe the structure of DNA

DNA is made up of two strands. These strands are joined together by bases. The strands are then twisted together.

12

What is the shape of DNA known as?

A double helix

13

What are the small units called that make up DNA?

Nucleotides

14

What are the 3 things that each nucleotide is made up of in DNA

A phosphate group, a sugar called deoxyribose, a base

15

Fully name the 4 bases in DNA

Adenine
Thymine
Cytosine
Guanine

16

State the 4 bases in DNA as letters

A, T, C ,G

17

Why do the bases in DNA bond?

To hold both strands in DNA together

18

What does adenine bond with to make a base pair?

Thymine

19

What does cytosine bond with to make a base pair?

Guanine

20

Arrange the following structures in order from smallest to largest: nucleus, gene, cell, chromosome, nucleotide

Cell, nucleus, chromosome, gene, nucleotide

21

Using the rules of complementary base paring, state the bases that would be found on the other strand of this DNA molecule: ATTGCA

TAACGT