Chapter 25 Pre Test Paper
Chapter 25 Pre-Test Question 1
Part A
Miller and Urey's experiments that attempted to recreate conditions on early Earth were significant because _____.
Hint 1.
They gave credence to the idea of abiotic synthesis.
ANSWER:
they showed how polymers could form spontaneously on a clay substrate
they produced the first protocells
they showed how radiometric dating could be used to give the absolute ages of rocks and fossils
proved the endosymbiotic theory
they showed that organic molecules such as amino acids could be produced from inorganic molecules
Correct
Miller and Urey showed that under conditions postulated to have existed on early Earth, it was possible to spontaneously form essential organic molecules.
Chapter 25 Pre-Test Question 2
Part A
Why do some scientists believe that RNA, rather than DNA, was …show more content…
a membrane-enclosed organelle with motor proteins.
a complex "motor" embedded in the cell wall and plasma membrane.
an external covering provided by the plasma membrane.
an internal 9 + 2 pattern of microtubules.
Correct
Chapter 27 Question 10
Part A
Which statement about the genomes of prokaryotes is correct?
ANSWER:
Prokaryotic genomes are diploid throughout most of the cell cycle.
Prokaryotic chromosomes are sometimes called plasmids.
Prokaryotic cells have multiple chromosomes, "packed" with a relatively large amount of protein.
The prokaryotic chromosome is not contained within a nucleus but, rather, is found at the nucleolus.
Prokaryotic genomes are composed of circular chromosomes.
All attempts used; correct answer displayed
Chapter 27 Question 13
Part A
Prokaryotes' essential genetic information is located in the
ANSWER:
nucleosome.
plasmids.
nucleolus.
nucleoid.
exospore.
Correct
Chapter 27 Question 16
Part
Part A
Miller and Urey's experiments that attempted to recreate conditions on early Earth were significant because _____.
Hint 1.
They gave credence to the idea of abiotic synthesis.
ANSWER:
they showed how polymers could form spontaneously on a clay substrate
they produced the first protocells
they showed how radiometric dating could be used to give the absolute ages of rocks and fossils
proved the endosymbiotic theory
they showed that organic molecules such as amino acids could be produced from inorganic molecules
Correct
Miller and Urey showed that under conditions postulated to have existed on early Earth, it was possible to spontaneously form essential organic molecules.
Chapter 25 Pre-Test Question 2
Part A
Why do some scientists believe that RNA, rather than DNA, was …show more content…
a membrane-enclosed organelle with motor proteins.
a complex "motor" embedded in the cell wall and plasma membrane.
an external covering provided by the plasma membrane.
an internal 9 + 2 pattern of microtubules.
Correct
Chapter 27 Question 10
Part A
Which statement about the genomes of prokaryotes is correct?
ANSWER:
Prokaryotic genomes are diploid throughout most of the cell cycle.
Prokaryotic chromosomes are sometimes called plasmids.
Prokaryotic cells have multiple chromosomes, "packed" with a relatively large amount of protein.
The prokaryotic chromosome is not contained within a nucleus but, rather, is found at the nucleolus.
Prokaryotic genomes are composed of circular chromosomes.
All attempts used; correct answer displayed
Chapter 27 Question 13
Part A
Prokaryotes' essential genetic information is located in the
ANSWER:
nucleosome.
plasmids.
nucleolus.
nucleoid.
exospore.
Correct
Chapter 27 Question 16
Part