WorksheetsDNA Structure & Replication Test Review
Total questions: 20
Worksheet time: 11mins
Which scientist developed the "Base-Pair" rule?
Watson & Crick
Franklin
Chargaff
Darwin
How do scientists refer to the DNA structure?
Single Helix
Double Helix
Triple Helix
Ladder
Genes for medically important proteins can be cloned (copied) and inserted into bacteria. Why can bacteria recognize a human gene and then produce a human protein?
DNA replication in bacteria and humans is the same
Bacterial cells contain the same organelles as human cells
The basic components of DNA are the same in humans and bacteria
Bacterial cells and human cells contain the same kind of chromosomes
During replication, which sequence of nucleotides would form hydrogen bonds with the DNA sequence TATGA?
TATGA
ATAGT
CACTA
ATACT
Senai is building a model of a strand of DNA. She should show that the nucleotides are linked by covalent bonds between:
Two nitrogenous bases
Phosphate and sugar
Nitrogenous bases and sugar
Nitrogenous bases and phosphate
Which scientist(s) were credited with the discovery of the shape of a DNA molecule, known as the double helix?
Hershey and Chase
Griffith
Watson and Crick
Franklin
The illustration below shows a step in DNA replication. Starting at the top, which list shows the identity of the bases of the new strand?
A, G, T, A
G, A, T, G
G, A, U, G
A, G, U, A
Four different segments of a DNA molecule are represented below. There is an error in the DNA in which molecule(s)?
segment 1 only
segment 3 only
segment 2 and 3
segment 2 and 4
After mitosis, each daughter cell has a complete copy of the genetic information in the original parent cell. This occurs because of which process? (5 Points)
Cellular Respiration
DNA Replication
Protein Synthesis
Passive Transport
At what point in the cell cycle does DNA replication occur and why? (5 Points)
before a cell divides, during the S phase of interphase, to provide each of the two resulting cells with a complete set of DNA instructions
before a cell divides, during the G1 phase of interphase, to ensure that the DNA will fit into the resulting cells
during cell division, to ensure that the DNA will fit into the resulting cells
after a cell divides, to provide each of the two resulting cells with a complete set of DNA instructions
Which of the following statements describes processes that occur during DNA replication? (5 Points)
A DNA sequence is read by RNA polymerase, which produces another RNA strand complementary to the first strand.
Two free-floating single strands of DNA are joined by polymerase. The polymerase finds the point at which the two strands will match up into a double strand.
Messenger RNA are decoded by a ribosome to produce an amino acid chain. In the cell's cytoplasm, transfer RNA join the messenger RNA, forming a polypeptide.
A double-stranded DNA molecule is unwound into single strands. DNA Polymerase matches the right nucleotides to the single strands so that each forms a double strand of DNA.
The individuality of an organism is determined by the:
Sequence of nitrogenous bases in deoxyribonucleic acid (DNA)
Number of amino acids in a cell
Position of the ribosomes on the endoplasmic reticulum
Number of nitrogenous bases in a codon
Which choice describes DNA after replication has taken place?
One molecule with two original strands and one molecule with two new strands
Two molecules, each with one original and one new strand
Two molecules, each with two new strands
Two molecules, each with two old strands
What structure is made up of a 5-carbon sugar, a phosphate group, and a nitrogenous base?
Nucleotide
Protein
Amino Acid
Fatty Acid
Rosalind Franklin contributed to the understanding of DNA by:
Producing images of DNA molecules using a technique called X-ray diffraction.
Figuring out that DNA strands form a double helix.
Conducting experiments that showed which nucleotides are complementary.
Finding that DNA was nucleic acid made up of a long chain of individual nucleotides.
In DNA Replication, which enzyme is used to unzip (break apart) the hydrogen bonds that hold the DNA together?
DNA telomerase
DNA Helicase
DNA Polymerase
Replication fork
Which statement best explains how the genetic code is universal? (5 Points)
DNA sequences are unique for each species.
The nucleotide ratios in the RNA molecule are different between species.
The length of a DNA molecule is unique for each species
A DNA sequence codes for the same proteins in different species.
The DNA sequences show DNA segments for four different species. Scientists sometimes use DNA sequences such as these to determine the relatedness of different species. Which of the following is a necessary condition for scientists to use DNA sequences in this way? (5 Points)
The DNA sequence of all organisms is the same.
The DNA of each species is made of different bases.
The DNA codes for the same proteins in each species.
The DNA of all organisms contains the same four bases.
In DNA Replication, which enzyme is used to join individual nucleotides to produce a new strand of DNA and proofreads the new strand for errors? (5 Points)
DNA telomerase
DNA Helicase
DNA Polymerase
Replication fork
Label the parts of the nucleotide correctly
