WorksheetsDNA
Total questions: 35
Worksheet time: 18mins
Which of the following people conducted the experiments that demonstrated that DNA is the genetic material of bacteriophages?
A) Watson and Crick
B) Hershey and Chase
C) Franklin
D) Pauling
The monomers of DNA and RNA are
A) monosaccharides.
B) nucleotides
C) fatty acids.
D) nucleic acids.
Which of the following statements regarding DNA is false?
A) DNA uses the sugar deoxyribose.
B) DNA uses the nitrogenous base uracil.
C) One DNA molecule can include four different nucleotides in its structure.
D) DNA molecules have a sugar-phosphate backbone.
The shape of a DNA molecule is most like
A) a set of railroad tracks.
B) a wooden ladder.
C) a twisted rope ladder.
D) beads on a string.
Which of the following statements regarding a DNA double helix is true?
A) The amount of adenine is equal to the amount of uracil, and the amount of guanine is equal to the amount of cytosine.
B) The amount of adenine is equal to the amount of guanine, and the amount of thymine is equal to the amount of cytosine.
C) The amount of adenine is equal to the amount of cytosine, and the amount of guanine is equal to the amount of thymine.
D) The amount of adenine is equal to the amount of thymine, and the amount of guanine is equal to the amount of cytosine.
If one strand of DNA is CGGTAC, then the corresponding strand would be
A) GCCTAG.
B) GCCAUC.
C) TAACGT.
D) GCCATG.
Which of the following options best depicts the flow of information when a gene directs the synthesis of a cellular component?
A) RNA → DNA → RNA → protein
B) DNA → RNA → protein
C) protein → RNA → DNA
D) DNA → tRNA → mRNA → protein
The transfer of genetic information from DNA to RNA is called
A) translation.
B) transcription.
C) initiation.
D) elongation.
The directions for each amino acid in a polypeptide are indicated by a codon that consists of ________ nucleotides in an RNA molecule.
A) five
B) four
C) three
D) two
We would expect that a 15-nucleotide sequence that includes a stop codon at the end (as part of the 15-nucleotide sequence) will direct the production of a polypeptide that consists of
A) two amino acids.
B) three amino acids.
C) four amino acids.
D) five amino acids.
Which of the following takes place during translation?
A) the conversion of genetic information from the language of nucleic acids to the language of proteins
B) the conversion of genetic information from DNA nucleotides into RNA nucleotides
C) the conversion of genetic information from the language of proteins to the language of enzymes
D) DNA replication
Any change in the nucleotide sequence of DNA is called
A) a mutation.
B) a mutagen.
C) a base substitution.
D) an anticodon.
Consider the following sentence: "The dog did not eat." Which of the following variations of this sentence is most like a base substitution mutation?
A) The dog did not et.
B) The dog dog did not eat.
C) The did dog not eat.
D) The doe did not eat.
Consider the following sentence: "The dog did not eat." Which of the following variations of this sentence is most like a frameshift mutation?
A) The did dog not eat.
B) The dod idn ote at.
C) The did not eat.
D) The dog did dog did not eat.
What is the transcription product of the sequence GCTAGCGATGAC?
A) CGTUCGCUTCUG
B) CGAUCGCUACUG
C) CAGTAGCGATCG
D) CGUTCGCUTCUG
Using the genetic code below, what protein sequence does the RNA sequence CUAGCUCGAUAUCUC code for?
A) Asp - Ala - Arg - Ile- Leu
B) Val - Arg - Ala - Phe - Stop
C) Leu - Gly - Tyr - Ala — Leu
D) Leu - Ala - Arg - Tyr - Leu
Examine the following two DNA sequences.
Sequence 1: ATGCGATGCTAGCAT
Sequence 2: ATGCGATGATAGCAT
If both of these sequences code for proteins, how might the function of protein 2 differ from the function of protein 1? Use the genetic code below for assistance.
A) Protein 1 and protein 2 will function exactly the same.
B) Protein 1 will be shorter than protein 2, so they will not function the same.
C) Protein 2 will be shorter than protein 1, so they will not function the same.
D) Protein 2 has a different sequence, so it will function differently from protein 1.
The creation of genetically identical offspring by a single parent, without the participation of sperm and egg, is called
A) asexual reproduction.
B) sexual reproduction.
C) regeneration.
D) spontaneous generation.
Which of the following statements regarding prokaryotes is false?
A) Prokaryotic chromosomes are more complex than those of eukaryotes.
B) Most prokaryotes reproduce by binary fission.
C) Prokaryotic cells are generally smaller and simpler than eukaryotic cells.
D) In prokaryotes, daughter chromosomes are separated by an active movement away from each other and the growth of a new plasma membrane between them.
Prior to mitosis, each chromosome of a eukaryotic cell consists of a pair of identical structures called
A) chromatin.
B) sister chromosomes.
C) nucleoli.
D) sister chromatids.
Eukaryotic cells spend most of their cell cycle in which phase?
A) interphase
B) prophase
C) metaphase
D) telophase
Which of the following occurs during interphase?
A) a reduction in the size of the nuclear membrane
B) cytokinesis
C) cell growth and duplication of the chromosomes
D) separation of newly formed DNA to opposite ends of the cell
The genetic material is duplicated during
A) the mitotic phase.
B) G1.
C) the S phase.
D) G2.
The process by which the cytoplasm of a eukaryotic cell divides to produce two cells is called
A) mitosis.
B) cytokinesis.
C) binary fission.
D) telophase.
During which phase of mitosis do the chromosomes line up on a plane equidistant (in the middle) from the two spindle poles?
A) prophase
B) metaphase
C) anaphase
D) telophase
At the end of mitotic anaphase,
A) the centromeres of each chromosome come together.
B) the chromatid DNA replicates.
C) nuclear envelopes begin to form around the chromosomes.
D) equivalent and complete collections of chromosomes have reached the two poles.
During which phase of mitosis does the nuclear envelope re-form?
A) anaphase
B) metaphase
C) prophase
D) telophase
Which of the following is a feature of plant cell division that distinguishes it from animal cell division?
A) formation of a cell plate
B) formation of a cleavage furrow
C) lack of cytokinesis
D) production of four (rather than two) new cells per mitotic division
Which of the following features likely accounts for the difference between plant and animal cell cytokinesis?
A) Animal cells lack the microfilaments required for forming a cleavage furrow.
B) Animal cells lack chloroplasts.
C) Plant cells have cell walls.
D) Plant cells have two sets of chromosomes; animal cells have one set of chromosomes.
When animal cells are grown in a petri dish, they typically stop dividing once they have formed a single, unbroken layer on the bottom of the dish. This arrest of division is an example of
A) cell constraint.
B) density-dependent inhibition.
C) cell division repression.
D) growth factor desensitization.
You are observing a single cell under a microscope. You go home for the night, and the next day you see four cells. The four cells look similar, and when you stain them with a dye that binds to DNA they all appear to contain the same amount of DNA. What likely happened overnight?
A) The single cell divided once to form four new cells via asexual reproduction.
B) The single cell divided once to form four new cells via sexual reproduction.
C) The single cell divided to form two new cells, and the two new cells each divided to form four total cells, all by asexual reproduction.
D) The single cell divided to form two new cells, and the two new cells each divided to form four total cells, all by sexual reproduction.
You and your lab partner are observing a cell under a microscope, but you do not know whether it is a eukaryote or a prokaryote. Which of the following observations regarding the chromosomes would you use to immediately conclude that the cell is a eukaryote?
A) The chromosomes are circular in structure.
B) The chromosomes are housed in a membrane-enclosed nucleus.
C) The chromosomes contain very few proteins.
D) The chromosomes are very simple in structure.
A skin cell of a red fox has 34 chromosomes. You look at the cell under a microscope and see that it has 34 chromosomes and one nucleus. Several hours later, you look at the same cell again and see that it has double the amount of DNA and one nucleus. A little while later, you see that it has 68 chromosomes and two nuclei. What stage of the cell cycle was this cell in when you viewed it at each time point?
A) First view: G1; second view: G2; third view: telophase
B) First view: G1; second view: metaphase; third view: cytokinesis
C) First view: S; second view: prophase; third view: cytokinesis
D) First view: G0; second view: G2; third view: telophase
What event will immediately follow the event shown in this image?
A) The cell will divide into two animal cells.
B) The cell will divide into two plant cells.
C) The cell will divide into four animal cells.
D) The cell will divide into four plant cells.
Which of the following statements regarding sexual and asexual reproduction is true?
A) Cell division only occurs after sexual reproduction.
B) Only offspring from asexual reproduction inherit traits from two parents.
C) Sexual reproduction typically includes the development of unfertilized eggs.
D) Sexual reproduction is more likely to increase genetic variation than is asexual reproduction.
