sample quiz Flashcards
What is an evolutionary clock?
used by the scientists to estimate
evolutionary distances are based on local sequence
changes often within a speci¢c gene, for example a ribosomal RNA gene
what are non-genetic factors contribute to generation of genetic variation
Intrinsic instability of nucleotides, structural flexibility of biological active molecules, random encounter of interactive components, chemical and physical mutagens.
comparaison of non homologous from homologous recombinataion
non homologous or analogous are similar traits but independent origins and homologous features are defined as those that share a common descent
the significance of Millers experiment
Is that the origin of life on the planet earth had occurred because of chemical conditions or through abiogenesis
what do millers experiment tells us?
A. Life forms from non-life
B. Inorganic materials can form organic molecules in the right conditions
C. Organic materials are always formed during an intense lightning storm
D. Nothing, Millers experiment was disproven by Pasteur
B
Water being in the vase
Q: What is being simulated in the portion of Millers experiment that is marked 1 ?
A. lightening
B. standing Water
C. water being vaporized
D. rain
B
Q: Stanley Miller and Harold Urey recreated Earth’s early atmosphere in a test tube.
Then they bombarded the chemical mixture with ultraviolet light and simulated lightning.
What were the results?
A. Cell membranes had formed.
B. Amino acids and other biological molecules were created.
C. RNA molecules formed.
D. DNA molecules emerged.
B
Q: Who disproved the idea of spontaneous generation was once and for all?
A. Aristotle
B. John Needham
C. Lazzaro Spallanzani
D. Louis Pasteur
D
Q. What purpose did the sparks in Miller and Urey’s experiment serve?
A. Heat
B. Lightening/Electricity
C. Volcanic Activity
D. Water Vapor
B
Blank and blank are organelles that definitely arose from endosymbiosis.
A. Rough ER & Smooth ER
B. Mitochondria & Flagellum
C. Chloroplast & Mitochondria
D. Chloroplast and Golgi apparatus
C
The term abiogenesis
A. means the same thing as spontaneous generation.
B. describes the emergence of life forms from nonliving chemical systems.
C. is another name for natural selection.
D. describes the emergence of small organisms from mud.
B
Q: Charles Darwin the first person to propose the idea of spontaneous generation.
A. True
B False
B it was Aristotle
