A nucleotide does not contain...
amino acid
According to chargaffs rule of base pairing, what are the base pairs
A-T, C-G
What kind of bond holds together DNA and the nitrogen bases
Weak hydrogen bonds
What are 3 components of a DNA nucleotide
Phosphate, nitrogen base, deoxyribose sugar
Rosalind Franklins x-ray image provided Watson and cricks model with which important factor for their model of DNA?
Double Helix Shape
In prokaryotes DNA is located where?
Cytoplasm
In eukaryotes, nearly all DNA is found where?
Cell nucleus
The main enzyme involved in linking nucleotides into DNA
DNA Polymerase
Is photocopying a piece of paper similar to DNA replication?
Yes. Similarity: You end up with 2 copies at the end. Differences: Has an original strand and a copied strand
When DNA is replicated how do the new molecules compare with the original.
They are the same
During which phase of a cells life is DNA replicated
S phase
2 DNA strands of a chicken were separated. The base composition of just one of those strands were determined. What are the percentages of nitrogen bases is A=15%
T=15% C=35% G=35%
Which part of the DNA structure codes for genetic information
Sequence of nitrogen bases
Why is it useful for the base pairs of DNA to be held together by hydrogen bonds and not covalent bonds?
Hydrogen bonds are weak therefore the 2 strands are equally separated for replication
A scientist uses radioactive nitrogen to label nitrogenous bases of DNA in a cell. Then the DNA is allowed to replicate and the new strands take up the non radioactive bases. Do 1, both, or neither of the daughter DNA strands have radioactive DNA?
Both
RNA differs from DNA how?
RNA is single stranded. RNA has uracil
How do ribosomes use mRNA and tRNA to assemble proteins?
Ribosomes
Transcription uses information from DNA to create mRNA needed to tell the cell what?
What Protein to make
Which molecule is mRNA transcribed
DNA