RNA Flashcards
learning (21 cards)
What sugar is found in DNA?
Deoxyribose
What base is missing in RNA, & what other base replaces it?
Thymine replaced with Uracil
Uracil will pair with what other on DNA?
Aderine
Is RNA double or single stranded?
Single strand
Name the 3 Types of RNA
Messenger RNA (mRNA), transfer RNA (tRNA) and ribosomal RNA (rRNA)
Which type of RNA copies DNA’s instructions in the nucleus?
Messenger RNA (mRNA)
Which type of RNA is most abundant?
Ribosomal RNA (rRNA)
What does tRNA transport?
Amino acids
What 2 things make up ribosomes?
ribosomal RNA (rRNA) and proteins
Define transcription.
DNA → mRNA
In what part of a cell are proteins made?
Ribosomes in the Cytoplasm
What is RNA polymerase & tell its function.
An Enzyme that makes RNA from a DNA Template
Where does RNA polymerase bind to the DNA it is transcribing?
Binds to a promoter region so transcription can start.
Are both strands of DNA copied during transcription?
No, only one strand at a time.
What bases pair with each other during transcription?
A→U, U→A, G→C, C→ G
What is the termination signal?
A stop codon
What happens when RNA polymerase reaches the termination signal?
It releases and stops transcribing.
What are the products of transcription called?
Proteins / RNA-mRNA
-tRNA
-rRNA
In transcription, ___ instructions for making a protein are copied by ___.
DNA, mRNA
Which RNA molecules are involved in the synthesis (making) of a protein?
all 3
What happens to the newly made mRNA molecule following transcription in the nucleus?
Travels to ribosome →→ makes proteins.
*Leaves Nucleus
