B1.2.2 - Transcription And Translation Flashcards Preview

B1 - B2 > B1.2.2 - Transcription And Translation > Flashcards

Flashcards in B1.2.2 - Transcription And Translation Deck (14):
1

Why can DNA not leave the nucleus?

It is too big

2

What is mRNA?

A copy of the DNA, on a single strand

3

What is the process of producing DNA called?

Transcription

4

Describe the steps in transcription

The DNA around a gene unzips so the strands are separated.
One of the DNA strands act as a template.
Complementary bases attach to the strand being copied.
This forms mRNA.
When done, the mRNA detaches itself from the strand and the DNA joins back together.

5

What is the one base that is missing in mRNA and what is it replaced with?

Thymine, replaced by Uracil

6

Which subcellular structure does mRNA travel to?

The ribosomes

7

Where are ribosomes?

In the cytoplasm

8

What are proteins made of?

Different amino acids

9

What determines the type and order of the amino acids?

The order of the nucleotides

10

What determines what different proteins are made?

The type and order of amino acids

11

What is the process of making protein called?

Translation

12

Describe the steps of translation

The mRNA attaches to a ribosome.
Then the nucleotide sequence is interpreted and the new protein is made.
The ribosome reads the nucleotides in the mRNA in groups of 3.
It continues.
Every triplet codes for a protein. The amino acids add up and become a protein.

13

What is a codon/base triplet?

The triplet of nucleotides that the ribosome reads of the mRNA

14

Give examples of proteins that can be produced

Enzymes
Hormones