Chapter 1.4 DNA and the production of proteins Flashcards Preview

FULL COURSE National 5 Biology > Chapter 1.4 DNA and the production of proteins > Flashcards

Flashcards in Chapter 1.4 DNA and the production of proteins Deck (14):
1

Chromosomes are made up of regions called

genes

2

DNA is a complex substance that forms

the genes of all living organisms.

3

DNA carries the genetic information, which is information for making

proteins

4

A single DNA molecule is a

double-stranded helix

5

Each strand of DNA is a chain carrying molecules called

bases

6

There are four different types of bases and they are

Adenine, Thymine, Guanine and Cytosine

7

The strands of the DNA helix are held by

bonds between bases on each strand

8

The bases bond together to form

complementary base pairs.

9

Base A only pairs with

base T

10

Base G only pairs with

base C

11

The sequence of bases A,T,G and C make up the

genetic code

12

The base sequence of a specific gene determines the

amino acid sequence in the specific protein to be assembled.

13

Proteins are assembled at

ribosomes in the cell cytoplasm

14

Messenger RNA (mRNA) is a molecule that carries a

complementary copy of the code from the DNA in the nucleus to a ribosome.