Download What does DNA stand for?

What does DNA stand for?
Deoxyribonucleic Acid
_______ is the enzyme that
chemically links Okazaki
fragments together
DNA Ligase
What is located at the
BOTTOM of a tRNA molecule?
Anti-codon sequence
Where in the cell is DNA
found?
Nucleus
Scientifically, describe the
shape of the DNA molecule.
Double Helix
What is a benefit of
semiconservative DNA
replication?
Helps reduce the number of
copying errors
Why is transcription
important?
Gets the DNA code out of the
NUCLEUS!
What is located at the top
of tRNA?
Amino acid
What are the 2 types of
purines?
Adenine, Guanine
What is the complement to
this side of a DNA molecule?:
TGGACTA
ACCTGAT
How many pairs of
chromosomes does a human
have in their body cells?
23
How many hydrogen bonds
are found between A-T?
2
Where can mRNA be
found?
Nucleus, cytoplasm, ribosome
A segment of DNA that codes
for a protein is called a ______
Gene
What are the 3 parts of the
DNA molecule?
Phosphate group
Deoxyribose Sugar
Nitrogen Base
______is the DNA strand that
is discontinuously built into
small Okazaki fragments
during replication
Lagging Strand
What sugar is present in
RNA?
ribose
What type of replication
occurs when DNA replicates?
Semiconservative Replication
______________ are short
segment of DNA synthesized
discontinuously in small
segments in the 3’-5’ direction
by DNA polymerase.
Okazaki Fragments
What nitrogen bases are
present in RNA?
A, U, C, G
What is chromatin?
Uncoiled DNA
What type of bond holds
together the nitrogen bases?
Hydrogen
What scientists are credited
with the “base-pairing” rules?
Watson & Crick
DNA that is coiled would
be called?
Chromosome
When does the DNA
replicate?
Cell division/Interphase
(before mitosis)
In what direction can DNA
synthesis only occur?
5’-3’
How many hydrogen bonds
are found between C-G?
3
Going from mRNA to a
protein is called _______.
Translation
During DNA replication, what
causes the hydrogen bonds to
break?
An Enzyme (DNA Helicase)
What is the tRNA
complement to this mRNA?:
AUGCAU
UACGUA
What is located at bottom
of tRNA?
Anti-codons
Who discovered DNA in
1928?
Frank Griffith
What polymer makes up or
hair color, bone length, etc..?
Protein
What is the shape of
mRNA?
Single helix
What are the 2 types of
pyrimidines?
Thymine, Cytosine
What is the function of
tRNA?
tRNA anticodons bond w/
mRNA codons to insure the
correct order of amino acids
_______ is the enzyme runs
along the parent chain of DNA
and bonds free floating
nucleotides to those of the
parent (original) chain-- based
on base pairing rules
DNA Polymerase
What sugar is present in
DNA?
Deoxyribose
What does RNA stand for?
Ribonucleic Acid
How many strands of mRNA
are transcribed from the two
“unzipped” strands of DNA?
1
What nitrogen bases are
present in DNA?
A, T, C, G
How is the accuracy of the
DNA code assured?
Base-pairing rules
_________ is the DNA strand
that is continuously built by the
addition of nucleotides to the 3’
end during replication
Leading Strand
Going from DNA to mRNA
is called _________.
Transcription
What is the mRNA complement
to this side of a DNA molecule:
AACGTAT
UUGCAUA
How does the mRNA get
out of the nucleus?
Nuclear pore
Identify this molecule.
DNA
What is located at the TOP
of a tRNA molecule?
Amino acids
Where does translation
occur?
Ribosome
What is the function of
mRNA?
To get the DNA code out of
the nucleus
What are proteins made
up of?
Amino acids
Where must the mRNA attach
before protein production can
begin?
Ribosome
Where does transcription
occur?
Nucleus
Identify this molecule.
tRNA
How many nitrogen bases
make up a mRNA codon?
3
What type of bond is formed
between amino acids during
translation?
Peptide bond
Identify this molecule.
mRNA
What is the function of
rRNA?
Creates peptide bonds
between the amino acids