DNA & RNA Vocabulary Flashcard Test I
Welcome to the electronic frontier classroom of the 21st century. From his studies with pea plants, Mendel concluded that hereditary factors (genes) determined many of an organism's traits. This vocabulary instrument will test your knowledge of scientists, experiments, and discoveries of DNA. This test allows you an unlimited attempts which aides you in the learning and test-taking skills. 25 questions will be generated randomly every attempt. I wish you high marks on all my tests. You can find additional information on the science web site, Mitchell's Cosmic Adventure. Com.
- 1.This scientist was a British bacteriologist who focused on the pathology of bacterial pneumonia. Who was that scientist?
- A.
Griffith, Frederick
- B.
Avery, Oswald
- C.
Chase, Martha
- D.
Hershey, alfred
- 2.What human pathogenic bacterium, was recognized as a major cause of pneumonia? (Hint: please follow the writing of scientific names).
- 3.A bacteriophage or virus that after cell penetration, immediately begins to subvert the host machinery and multiply is called _____.
- A.
Virulent
- B.
Virulence
- C.
Pathogen
- D.
Base sequence
- 4.The relative pathogenicity of an organism is called a(n)_____. (Hint: please enter your answer(s) in all lower case letters.)
- 5._____ is any organism that is capable of causing disease or a toxic response in another organism.
- A.
Virulent
- B.
Virulence
- C.
Pathogen
- D.
Nucleotide
- 6.In what year were a series of experiments conducted by Alfred Hershey and Martha Chase to confirm the existence of DNA was the "genetic material"?
- 7.Frederick Griffith discovered that a harmless strain of Streptococcus pneumoniae could be made virulent after being exposed to _____ - _____ virulent strains.
- A.
Heat - killed
- B.
Cold - killed
- C.
Cold - frozen
- D.
Freeze - dried
- 8.His research group used DNase to destroy DNA, and RNase to destroy RNA. The team leader _____ _____ concluded that DNA is responsible for transformation in bacteria. Please identify the scientist. (HINT: please enter the first, last name)
- 9.A virus that infects bacteria and eventually controls the metabolism of the bacterial host is called a(n)_____.
- A.
Virus
- B.
Bacteria
- C.
Fungus
- D.
Bacteriophage
- E.
DNase
- 10.Chase and Hershey used radioactive isotope Sulfur-35 to label DNA molecules.
- A.
True
- B.
False
- 11.Escherichia coli is a gram negative, _____-shaped bacteria present in the intestinal tract of animals, soil, and water.
- A.
Rod
- B.
Sphere
- C.
Corkscrew
- D.
Box
- 12.A young American biologist attempted to determine the structure of the DNA molecule in the 1950's. Who was this scientist?
- A.
James Watson
- B.
Francis Crick
- C.
Martha Chase
- D.
Erwin Chargaff
- 13.Chase and Hershey used radioactive isotope _____ to label DNA molecules.
- 14.Rosalind Franklin, who made critical contributions to the understanding of molecular structures. Please choose those correct substances. (Hint: this is a multiple answer question.)
- A.
DNA
- B.
RNA
- C.
Viruses
- D.
Fungi
- E.
Coal
- F.
Graphite
- G.
Insects
- 15.
A DNA nucleotide is composed of a nucleobase, a five-carbon sugar, _____ and one or more phosphate groups.- A.
Ribose
- B.
2-deoxyribose
- C.
Valine
- D.
Purine
- E.
DNA polymerase
- 16._____ is also known as 5-methyluracil, a pryimidine nucleobase.
- A.
Thymine
- B.
Adenine
- C.
Guanine
- D.
Cytosine
- 17.Thymine is one of the four main bases found in DNA and RNA.
- A.
True
- B.
False
- 18._____ is one of the four main bases found in DNA and RNA, along with adenine, guanine, and thymine.
- A.
Cytosine
- B.
Guanine
- C.
Thymine
- D.
Uracil
- E.
Adenine
- 19.Adenine is a(n)_____, which are six-membered rings attached to five membered rings. (Hint: please enter your answer in all lower case letters.)
- 20.Which of the following bases bonds to guanine?
- A.
Adenine
- B.
Thymine
- C.
Guanine
- D.
Cytosine
- E.
Uracil
- 21._____ are nitrogenous bases that have a double ring of carbon and nitrogen atoms, such as adenine and guanine. (Hint:
- 22._____ are nitrogenous bases that have a single ring of carbon and nitrogen atoms, such as cytosine and thymine. (Hint: please enter your answer in all lower case letters.)
- 23._____ _____ is a cellular or viral polymerase enzyme that synthesizes DNA molecules from their nucleotide building blocks.
- A.
DNA polymerase
- B.
RNA polymerase
- C.
MRNA polymerase
- D.
TRNA polymerase
- E.
RDNA polymerase
- 24._____ _____ is a specific type of enzyme that facilitates the joining of DNA strand together by catalyzing the formation of a phosphodiester bond.
- 25._____ _____ is the process by which DNA is copied in a cell before mitosis, meiosis, or binary fission.
- A.
DNA Replication
- B.
Replication Fork
- C.
DNA Polymerase
- D.
Semi-conservative replication
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