DNA
Where is DNA located?
nucleus
What are the 2 types of RNA?
mRNA
tRNA
Where are ribosomes located?
in a cell
Where is the DNA of a living organism located?
nucleus of a cell
Why do organisms need to make proteins?
mostly made of proteins
repair
grow
What are the 4 nitrogen bases in DNA?
adenine
thymine
cytosine
guanine
What does mRNA do?
takes a copy of DNA to the ribosome
What is the job of a ribosome?
make proteins
Why does DNA need to be replicated?
cell division
What are proteins made of?
amino acids
Which nitrogen base is not in DNA?
uracil
Which molecule is double stranded?
DNA
What is the last step of translation?
amino acids link to form a protein
What is the first step of transcription?
DNA is untwisted and unzipped
Which nitrogen base always bonds with adenine in DNA?
thymine
What is DNA used for?
instructions for making proteins
What is the 3 letter sequence that codes for an amino acid called?
codon
What molecule brings the amino acids to the ribosomes?
tRNA
What is the name of the cell division that produces 2 daughter cells?
mitosis
Which nitrogen base always bonds with adenine in RNA?
uracil
What does DNA stand for?
deoxyribonucleic acid
What does RNA stand for?
ribonucleic acid
What happens to the polypeptide chain once it is released from the ribosome?
it folds, twists, and turns into a protein
What is the name of the cell division in which 4 daughter cells are produced?
meiosis
What is the 3 letter sequence on tRNA called?
anti-codon