Shirley Zhu
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High School AP Biology Quiz am Molecular Genetics, erstellt von Shirley Zhu am 26/03/2015.

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Shirley Zhu
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Molecular Genetics

Frage 1 von 36

1

Which of the following scientists is responsible for figuring out that transformation is possible but the transforming factor is unknown?

Wähle eine der folgenden:

  • Avery

  • Chargaff

  • Griffith

  • Melson and Stahl

  • Hershey and Chase

Erklärung

Frage 2 von 36

1

Which of the following scientists is responsible for culturing E. Coli in 15N and then 14N to show that DNA replication is semiconservative?

Wähle eine der folgenden:

  • Avery

  • Chargaff

  • Griffith

  • Meselson and Stahl

  • Hershey and Chase

Erklärung

Frage 3 von 36

1

Which of the following scientists found that nucleic acid, not protein is the genetic material of the T2 bacteriophage?

Wähle eine der folgenden:

  • Avery

  • Chargaff

  • Griffith

  • Meleson and Stahl

  • Hershey and Chase

Erklärung

Frage 4 von 36

1

Which of the following scientists discovered that when nucleases are added to the transformation reaction, transformation does not occur?

Wähle eine der folgenden:

  • Avery

  • Chargaff

  • Griffith

  • Meselson and Stahl

  • Hershey and Chase

Erklärung

Frage 5 von 36

1

Which of the following scientists figured out that the percent composition of G equals the percent composition of C in DNA?

Wähle eine der folgenden:

  • Avery

  • Chargaff

  • Griffith

  • Meselson and Stahl

  • Hershey and Chase

Erklärung

Frage 6 von 36

1

Which of the following is a double-stranded molecule that is passed from one generation to the next?

Wähle eine der folgenden:

  • mRNA

  • DNA

  • tRNA

  • RNA polymerase

  • ribosome

Erklärung

Frage 7 von 36

1

Which of the following is a protein that synthesizes RNA?

Wähle eine der folgenden:

  • mRNA

  • DNA

  • tRNA

  • RNA polymerase

  • ribosome

Erklärung

Frage 8 von 36

1

Which of the following contains codons?

Wähle eine der folgenden:

  • mRNA

  • DNA

  • tRNA

  • RNA polymerase

  • ribosome

Erklärung

Frage 9 von 36

1

Which of the following contains anticodons?

Wähle eine der folgenden:

  • mRNA

  • DNA

  • tRNA

  • RNA polymerase

  • ribosome

Erklärung

Frage 10 von 36

1

Which of the following is made of two subunits, each composed of protein and RNA

Wähle eine der folgenden:

  • mRNA

  • DNA

  • tRNA

  • RNA polyermase

  • ribosome

Erklärung

Frage 11 von 36

1

Which of the following attaches to an amino acid on its 3' end?

Wähle eine der folgenden:

  • mRNA

  • DNA

  • tRNA

  • RNA polymerase

  • ribosome

Erklärung

Frage 12 von 36

1

What is another word for each newly synthesized DNA molecule contains a template strand and a new strand?

Wähle eine der folgenden:

  • DNA polymerase

  • RNA polymerase

  • Semiconservative replication

  • Antiparallel

  • Ribosome

Erklärung

Frage 13 von 36

1

Which of the following is a part of translation?

Wähle eine der folgenden:

  • DNA polymerase

  • RNA polymerase

  • Semiconservative replication

  • Antiparallel

  • Ribosome

Erklärung

Frage 14 von 36

1

Which of the following is a part of transcription?

Wähle eine der folgenden:

  • DNA polymerase

  • RNA polymerase

  • Semiconservative

  • Antiparallel

  • Ribosome

Erklärung

Frage 15 von 36

1

Which of the following is a replication and proofreading enzyme?

Wähle eine der folgenden:

  • DNA polymerase

  • RNA polymerase

  • Semiconservative replication

  • Antiparallel

  • Ribosome

Erklärung

Frage 16 von 36

1

Which of the following is most active during S phase of interphase?

Wähle eine der folgenden:

  • DNA polymerase

  • RNA polymerase

  • Semiconservative replication

  • Antiparallel

  • Ribosome

Erklärung

Frage 17 von 36

1

What is the name of the fact that the 5' end of one strand is hydrogen-bonded to the 3' end of the complimentary strand?

Wähle eine der folgenden:

  • DNA polymerase

  • RNA polymerase

  • Semiconservative replication

  • Antiparallel

  • Ribosome

Erklärung

Frage 18 von 36

1

Which of the following typically occurs only before cell division?

Wähle eine der folgenden:

  • DNA synthesis

  • Transcription

  • Translation

  • Reverse transcription

  • Posttranscriptional processing

Erklärung

Frage 19 von 36

1

What is the name of the process in which polypeptides are assembled at ribosomes?

Wähle eine der folgenden:

  • DNA synthesis

  • Transcription

  • Translation

  • Reverse transcription

  • Posttranscriptional processing

Erklärung

Frage 20 von 36

1

What is the process by which a strand of DNA is made complimentary to an RNA molecule?

Wähle eine der folgenden:

  • DNA synthesis

  • Transcription

  • Translation

  • Reverse transcription

  • Posttranscriptional processing

Erklärung

Frage 21 von 36

1

Which of the following involves splicing out introns?

Wähle eine der folgenden:

  • DNA synthesis

  • Transcription

  • Translation

  • Reverse transcription

  • Posttranscriptional processing

Erklärung

Frage 22 von 36

1

Which of the following processes begins at the origin of replication?

Wähle eine der folgenden:

  • DNA synthesis

  • Trancription

  • Translation

  • Reverse transcription

  • Posttranscriptional processing

Erklärung

Frage 23 von 36

1

In which of the processes is a 5' cap and a poly-A tail added to an RNA molecule?

Wähle eine der folgenden:

  • DNA synthesis

  • Transcription

  • Translation

  • Reverse transcription

  • Posttranscriptional processing

Erklärung

Frage 24 von 36

1

All of the following are mechanisms by which bacteria acquire genetic diversity EXCEPT

Wähle eine der folgenden:

  • Mutation

  • Binary fission

  • Transformation

  • Transduction

  • Conjugation

Erklärung

Frage 25 von 36

1

If a known single-base substitution in a gene produces a nonfunctional enzyme, how can a scientist test for the presence of this mutation?

Wähle eine oder mehr der folgenden:

  • Restriction enzymes can be used to test for gene mutations that introduce or eliminate restriction enzyme cleavage sites.

  • A test of enzyme activity can be performed on purified enzyme.

  • An electron microscope can be used to study the structure of the gene or of the protein.

Erklärung

Frage 26 von 36

1

DNA analysis of adult and developing frogs reveals that the same genes are present in all the cells of the frog throughout its development. However, certain proteins found in developing frogs are absent from adult frogs. Which of the following best explains this observation?

Wähle eine der folgenden:

  • Developmental genes are not expressed in adults.

  • No genes expressed in adults are expressed in developing organisms.

  • Proteins are not modified as an organism develops

  • Proteins are greatly modified as an organism develops

  • Most genes in cells are never expressed.

Erklärung

Frage 27 von 36

1

All of the following are true regarding gene expression EXCEPT

Wähle eine der folgenden:

  • All DNA-containing cells in a particular organism have basically the same genes.

  • Different cell types contain different proteins.

  • A particular cell makes the exact-same proteins for its entire lifespan.

  • Promoters are regions of DNA that help regulate gene expression.

  • In eukaryotes, each gene has its own promoter.

Erklärung

Frage 28 von 36

1

A nucleus was removed from a fibroblast cell of an adult mouse (mouse 1). The nucleus was then inserted into an egg cell from which the nucleus was removed (the egg cell was from a different mouse, 2). The resulting diploid cell began to divide, and the young embryo was implanted into the uterus of a third mouse and allowed to develop. The third mouse eventually gave birth to a healthy mouse (mouse 4). Which of the following correctly identifies the procedures described above?

Wähle eine der folgenden:

  • DNA sequencing

  • Nuclear transplantation (cloning)

  • Embryology

  • Sexual reproduction

  • Nuclear fission

Erklärung

Frage 29 von 36

1

Referring to question 28, the phenotype of the young mouse (mouse 4) is expected to be

Wähle eine der folgenden:

  • practically identical to the adult mouse from which the nucleus was taken (mouse 1).

  • practically identical to the mouse who donated the egg (mouse 2).

  • similar to the mouse who donated the egg (mouse 2).

  • a combination of the nuclear and egg donor mice (mice 1 and 2).

  • the same as the mouse in which it developed (mouse 3).

Erklärung

Frage 30 von 36

1

A cloned animal may exhibit traits that are not present in the animal from which it was cloned (the nucleus donor). Which of the following best explains this observation?

Wähle eine der folgenden:

  • The egg donor, not the nucleus donor, determines the phenotype of the clone.

  • Usually, but not always, the nucleus donor determines the phenotype of the offspring.

  • The egg into which the nucleus was transferred contained extra-nuclear genes.

  • The cloned animal only expresses the genes of the egg donor.

  • The genes of the nucleus donor were not properly expressed in the offspring.

Erklärung

Frage 31 von 36

1

DNA from a specific organism is determined to contain 20 percent cytosine. Which of the following can be concluded about the DNA of this organism?

Wähle eine der folgenden:

  • It contains 30 percent G.

  • It contains 80 percent G.

  • It contains 40 percent A and 40 percent T.

  • It contains 20 percent T and 20 percent A

  • It contains 30 percent T and 30 percent A

Erklärung

Frage 32 von 36

1

A yeast cell can be used to express and animal gene. Which of the following best explains why this is possible?

Wähle eine der folgenden:

  • Yeast and animals have mostly the same genes.

  • Yeast and animals are both eukaryotes.

  • The genetic code is universal.

  • DNA replication is similar in yeast and animals.

  • Yeast and animals share a recent common ancestor.

Erklärung

Frage 33 von 36

1

Which of the following statements correctly describes mutations?

Wähle eine der folgenden:

  • They are harmful to the organism but good for the species.

  • They are irreversible.

  • They are only useful when they occur in germ cells.

  • They are a source of variation.

  • They drive evolution by creating selective pressures.

Erklärung

Frage 34 von 36

1

Which of the following statements is true concerning genes?

Wähle eine der folgenden:

  • Genes exist in alternate forms called introns and extrons.

  • A gene can code for a polypeptide.

  • Genes can cross over during mitosis.

  • Recessive alleles are never expressed.

  • Genes make up the majority of nucleotide sequences in the human genome.

Erklärung

Frage 35 von 36

1

All of the following statements regarding nucleic acids are true EXCEPT

Wähle eine der folgenden:

  • Nucleotides consist of a five-carbon sugar, a nitrogenous base and a phosphate.

  • Nucleic acids are only synthesized from the 5' --> 3' direction.

  • The nitrogenous bases of both DNA and RNA include adenine and guanine.

  • RNA does not contain uracil.

  • Complementary base pairs of the same (in single-stranded) or different (in double-stranded) nucleic acid strands can hydrogen-bond to each other.

Erklärung

Frage 36 von 36

1

Which of the following statements about DNA replication is true?

Wähle eine der folgenden:

  • DNA replication begins at the promoter.

  • The leading strand of DNA synthesis contains Okazaki fragments.

  • Hydrogen bonds must be broken in order to replicate DNA.

  • Bacteria have more DNA than eukaryotes, and so they take longer to replicate their DNA.

  • DNA ligase is necessary to build primers on lagging strands during replication.

Erklärung

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