DNA Test Part Five: Enzymes Flashcards Preview

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Flashcards in DNA Test Part Five: Enzymes Deck (15):
1

Polymerase

Joins individual nucleotides to produce the new strand of DNA

2

Telomerase

Adds DNA at the end of chromosomes

3

Telomeres

The ends of linear chromosomes, called telomeres, protect genes from getting deleted as cells continue to divide.

4

Enzymes involved in DNA replication

Helicase
RNA primase
DNA polymerase
Ligase

5

RNA Primase

It goes over a single DNA strand and creates RNA sequences called primers, which transcribe DNA into RNA.

6

Ligase

It seals repairs in the DNA, it seals recombination fragments, and it connects small DNA fragments formed during the replication of double-stranded DNA in eukaryotes

7

Ribosomes

use the sequence of codons in the mRNA to assemble amino acids into polypeptide chains

8

Promoter

A promoter is a region of DNA that initiates transcription of a particular gene. Promoters are located near the transcription start sites of genes towards the 5' region of the sense strand

9

MRNA

mRNA Transcribes the genetic code from DNA into a form that can be read and used to make proteins. mRNA carries genetic information from the nucleus to the cytoplasm of a cell

10

TRNA

Brings or transfers amino acids to the ribosome that correspond to each three-nucleotide codon of rRNA

11

Helicase

separate double-stranded DNA into single strands allowing each strand to be copied

12

DNA polymerase

DNA Polymerase synthesizes a DNA strand and used in DNA replication

13

RNA polymerase

used during transcription to synthesize the mRNA strand no proofreading systems

14

Ribosome

use the sequence of codons in the mRNA to assemble amino acids into polypeptide chains

15

RRNA

catalyze the assembly of amino acids into protein chains