What does the first stage of DNA replication involve?
The first stage of DNA replication involves the unwinding of the DNA double helix and separating them by breaking the hydrogen bonds between the bases.
100
Contains deoxyribose sugar, a base (which can be adenine, guanine, cytosine or thymine), a phosphate group.
What is a nucleotide?
100
The sugar of DNA
What is deoxyribose?
100
The process through which proteins are synthesized.
What is translation?
100
A double ringed base. the two kinds are; Adenine and Guanine.
What is purine?
200
What enzyme is involved in the first stage of DNA replication?
Enzyme Helicase
200
Which 2 are not correct?
A) Adenine and Thymine
B) Thymine and Guanine
C) Cytosine and Guanine
D) Cytosine and Adenine
B and D
200
The bases of RNA
What are adenine, guanine, cytosine, and uracil?
200
Ribosomes, mRNA, and tRNA.
What are the necessary components of translation?
200
Which enzyme is responsible for the pairing of adenine with thymine and guanine with cytosine?
DNA polymerase
300
What does adenine always pair up with?
Thymine
300
A covalent bond forms between the ? of one nucleotide and the ? of another nucleotide
What are sugar and phosphate group?
300
Catalyzing enzyme for transcription
What is RNA polymerase?
300
What is required for the tRNA molecule to bind to the ribosome?
Its anticodon must match the codon on the mRNA.
300
The name of the new RNA strand
What is messenger RNA?
400
The new strands formed are ? to their template strands, but also ? to the other template
Complementary, identical
400
Where are hydrogen bonds found?
The hydrogen bonds are found between the bases of the two strands of nucleotides.
400
Codons code for ______ which link to form ______
What are particular amino acids and proteins?
400
What is created when peptide bonds begin to form between amino acids?
A polypeptide chain.
400
What is the main function of genes, in terms of the process of making polypeptides?
Genes store the information required for making polypeptides.
500
Why is DNA replication semi conservative?
DNA replication is semi-conservative because both of the DNA molecules produced are formed from an old strand and a new one.
500
In a double helix, the two chains are in opposite directions 3' to 5' is parallel to 5' to 3' chain. True or False?
True
500
Question: The make-up of one codon
What are 3 bases?
500
How is a polypeptide formed?
By amino acids linking together through peptide bonds.
500
A single ringed base. The three kinds are; Cytosine, Thymine (in DNA) and Uracil (in RNA)