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Preguntas del test (23)
1By observing bacterial transformation, Avery and other scientists discovered that the nucleic acid DNA stores and transmits genetic information from one generation of bacteria to the next.
- AVerdadero
- BFalso
2Hershey and Chase's experiment with bacteriophages confirmed Avery's results, convincing many scientists that DNA was the genetic material found in genes-not just in viruses and bacteria, but in all living cells.
- AVerdadero
- BFalso
3The DNA that makes up genes must be capable of storing, copying, and transforming the genetic information in a cell.
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- BFalso
4DNA is a nucleic acid made up of amino acids joined into long strands or chains by covalent bonds
- AVerdadero
- BFalso
5The clues in Franklin's X-ray pattern enabled Watson and Crick to build a model that explained the specific structure and properties of DNA.
- AVerdadero
- BFalso
6The double-helix model explains Chargaff's rule of base pairing and how the two strands of DNA are held together.
- AVerdadero
- BFalso
7DNA poly merase is an enzyme that joins individual nucleotides to produce a new strand of DNA.
- AVerdadero
- BFalso
8Replication in most prokaryotic cells starts from a single point and proceeds in two directions until the entire chromosome is copied.
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- BFalso
9In prokaryotic cells, replication may begin at dozens or even hundreds of places on the DNA molecule, proceeding in both directions until each chromosome is completely copied.
- AVerdadero
- BFalso
10The process by which one strain of bacterium is changed into another strain is called
- Atranscription
- Btransformation
- Cduplication
- Dreplication
11Bacteriophages are
- Aa form of bacteria.
- Benzymes.
- Ccoils of DNA.
- Dviruses.
12Which of the following researchers used radioactive markers in experiments to show that DNA was the genetic material in cells?
- AFrederick Griffith
- BOswald Avery
- CAlfred Hershey and Martha Chase
- DJames Watson and Francis Crick
13Before DNA could definitively be shown to be the genetic material in cells, scientists had to show that it could
- Atolerate high temperatures.
- Bcarry and make copies of information.
- Cbe modified in response to environmental conditions.
- Dbe broken down into small subunits.
14A nucleotide does NOT contain
- Aa 5-carbon sugar.
- Ban amino acid.
- Ca nitrogen base.
- Da phosphate group.
15According to Chargaff's rule of base pairing, which of the following is true about DNA?
- AA=T and C=G
- BA-C and T=G
- CA=G and T=C
- DA=T=C=G
16The bonds that hold the two strands of DNA together come from
- Athe attraction of phosphate groups for each other.
- Bstrong bonds between nitrogenous bases and the sugar-phosphate backbone.
- Cweak hydrogen bonds between nitrogenous bases.
- Dcarbon-to-barbon bonds in the sugar portion of the nucleotides.
17In Prokaryotes, DNA molecules are located in the
- Anucleus.
- Bribosomes.
- Ccytoplasm.
- Dhistones.
18In eukaryotes, nearly all the DNA is found in the
- Anucleus.
- Bribosomes.
- Ccytoplasm.
- Dhistones.
19The main enzyme involved in linking individual nucleotides into DNA molecules is
- ADNA protease.
- Bribose.
- Ccarbohydrase.
- DDNA polymerase.
20During replication, which sequence of nucleotides would bond with the DNA sequence TATGA?
- ATATGA
- BATACT
- CCACTA
- DAGTAT
21The scientist(s) responsible for the discovery of bacterial transformation is (are)
- AWatson and Crick.
- BGriffith.
- CAvery.
- DFranklin.
22Which of the following does NOT describe the structure of DNA?
- Adouble helix
- Bnucleotide polymer
- Ccontains adenine-quanine pairs
- Dsugar-phosphate backbone
23What did Hershey and Chase's work show?
- AGenes are probably made of DNA
- BGenes are probably made of protein.
- CViruses contain DNA but not protein.
- DBacteria contain DNA but not protein.
Información
- Descripción
- 1 Honors (Chapter 12) Biology Honors Test sobre Study Guide, creado por Stefania Schoen el 05/02/2017.
- Autor
- Stefania Schoen
- Idioma
- English
- Visitas
- 29
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