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BIL 255 EXAM 1 QUESTIONS AND ANSWERS
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BIL 255 EXAM 1 QUESTIONS AND ANSWERS...
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Cellular metabolism uses free energy reactions so that?A) the cell is at chemical equilibrium
B) cells are far away from chemical equilibrium
C) only the light energy of photosynthesis provides energy
D) none - ANSWER B
The form of cellular energy capture where chemical electron donors, as H2S,
provide energy is referred to as?
A) photosynthesis
B) heterotrophy
C) lithography
D) autotrophy
E) none - ANSWER C
Which of the following is a "universal" characteristic of all cellular life?
A) hereditary DNA
B) Templated polymerization
C) the genetic code
D) protein catalysts
E) all of them - ANSWER E
Eukaryotic chromosomal DNA is randomly dispersed throughout the nucleus?
T or F - ANSWER False
Technological advancement in instrumentation has been as important in cell and
molecular biology as a conceptual idea? T or F - ANSWER True
The molecule analyzed by Carl Woese to establish the higher order of Domains
in the Tree of life was?
A) DNA
B) Enzymes
C) Small Ribosomal RNA
D) chromosome structure
, E) none - ANSWER C
Genomic DNA molecules that are not complexed with cellular proteins are
found in?
A) Prokaryotes
B) Eukaryotes
C) cytoskeleton
D) none - ANSWER A
The group of bacterial cells that retain the stain crystal violet due to the
presence of a peptidoglycan cell wall layer during Gram staining are the?
A) Gram positive bacteria
B) Gram negative bacteria
C) neither - ANSWER A
A single cell that live 3-4 billion years ago from which all organism now living
on earth have a common descent?
A) Archaea
B) LUCA
C) Gram neg bacteria
D) a protocell
E) none - ANSWER B
A fundamental research approach to understanding the nature of complex things
by reducing them to the interactions of their parts is?
A) microscopy
B) cell tissue culture
C) Vitalism
D) Reductionism
E) none - ANSWER D
MicoRNA's?
A) are exons within the nucleus
B) first evolved RNA molecules
C) can inactivate genes by degrading mRNA's
D) occur only in artificially made cells
E) none - ANSWER C
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