During DNA replication, a DNA
strand that has the bases
CTAGGT produces a strand with
the bases
GATCCA
100
RNA contains the sugar _______.
ribose
100
What is produced during
transcription?
RNA molecules
200
Which of the following is a
Nucleotide found in DNA?
A. Ribose + phosphate + thymine
B. Ribose + phosphate + uracil
C. Deoxyribose + phosphate + uracil
D. Deoxyribose + phosphate + cytosine
D. Deoxyribose + phosphate + cytosine
200
DNA replication results in two
DNA molecules, each with
1 ______ strand and
1 __________ strand.
new, original
200
During _________, only one strand
of DNA serves as a template.
transcription
200
What happens during the process
of translation?
The cell uses information from messenger RNA to produce proteins.
300
DNA is tightly wrapped around
___________.
histones
300
Genes contain instructions for
assembling
proteins
300
In RNA, __________ and
____________ are pyrimidines
cytosine and uracil
300
What must happen to a DNA
molecule before RNA polymerase
can make RNA?
The DNA molecule must separate
400
The Watson and Crick model of
DNA is a ______________,
in which two strands are wound
around each other.
double helix
400
The replication of a DNA molecule
results in ____ copies of the same
gene.
2
400
What are the three main parts of
an RNA nucleotide?
5-carbon sugar, a phosphate group, and a nitrogenous base.
400
What causes translation to stop?
It stops when the ribosome reaches a stop codon on the mRNA molecule
500
Describe the structure of a
DNA molecule.
DNA is a double helix made up of nucleotides that has three parts: a Deoxyribose molecule, a phosphate group, and a nitrogenous base.
500
During DNA replication, what two
processes must occur before the
two strands of a DNA molecule
can separate?
1. Hydrogen bonds must be broken
2. Molecule must unwind
500
Name and describe the three
types of RNA?
Messenger RNA serves as “messengers” from DNA to the rest of the cell
Ribosomal RNA makes the major parts of ribosomes
Transfer RNA transfers each amino acid to the ribosome.
500
During transcription, an RNA
molecule is formed where?