Question 1

The oldest fossils of eukaryotes have been estimated to be

Accepted Answer

A)  6000 years old.
B)  8 billion years old.
C)  4.5 billion years old.
D)   1.5 billion years old.

Question 2

Infolding of the cellular membrane has led to the development of the

Accepted Answer

A)  chloroplast
B)  mitochondria
C)   nuclear envelope
D)  nucleolus

Question 3

What is the advantage of having cyanobacteria living inside a cell?

Accepted Answer

A)  Enhanced protection of DNA
B)  Intracellular production of glucose
C)  Much more efficient protein synthesis
D)  Allows the cell to manufacture ATP

Question 4

Imagine that NASA discovered a new planet with an atmosphere rich in hydrogen gas, hydrogen sulfide, ammonia and methane.We would call this a(n)

Accepted Answer

A)  reducing atmosphere, because of the availability of hydrogen atoms that can donate electrons.
B)  reducing atmosphere because the atmosphere would reduce the energy necessary to build molecules.
C)  oxidizing atmosphere because of the availability of oxygen compounds.
D)  oxidizing atmosphere because of the lack of oxygen gas.

Question 5

It has been discovered that enzyme-like catalysis can be carried out not only by enzymes but also by

Accepted Answer

A)  sugars.
B)  DNA.
C)  phospholipids.
D)  RNA.

Question 6

Which of the following was demonstrated by the Miller-Urey experiment?

Accepted Answer

A)  Life began in the oceans.
B)  Life can be started experimentally in the laboratory.
C)  Organic molecules important to life could have been formed from a vast array of simple chemicals.
D)  Life began on the pre-biotic Earth 3.5 billion years ago.

Question 7

All of the following were produced in experiments on primitive Earth conditions conducted by Miller-Urey and others, except for

Accepted Answer

A)  amino acids.
B)  organic molecules.
C)  prokaryotes.
D)  hydrogen cyanide.

Question 8

Why have plants been implicated in the Ordovician and Devonian glaciations, but not the Proterozoic glaciations?

Accepted Answer

A)  Proterozoic plants used anoxygenic photosynthesis.
B)  Proterozoic plants had simple root structures that did not increase rock weathering.
C)  Land plants had not yet evolved during the Proterozoic.
D)  The non-vascular plants present during the Proterozoic did not contribute to global nutrient cycles.

Question 9

Which eon would contain rocks with no fossils?

Accepted Answer

A)  Archean
B)  Hadean
C)  Proterozoic
D)  Phanerozoic

Question 10

The age of the Earth according to modern estimations is aboutrev: 02_12_2014_QC_45114

Accepted Answer

A)  8 billion years.
B)  4.6 billion years.
C)  3.5 billion years.
D)  1.5 billion years.

Question 11

In the original experiments by Stanley Miller and Harold Urey to synthesize organic molecules in an abiotic environment, which one of the following would you NOT expect to find in the collection flask?

Accepted Answer

A)  urea
B)  amino acids
C)  ATP
D)  adenine

Question 12

Prokaryotic organisms were the only life-forms present on earth for almost 2 billion years.Multicellular eukaryotes have only been around for about 25% of earth's history

Accepted Answer

A) True 
 B)False

Exam 26: The Origin and Diversity of Life

Infolding of the cellular membrane has led to the development of the

Correct Answer
verified

All of the following were produced in experiments on primitive Earth conditions conducted by Miller-Urey and others, except for

Correct Answer
verified

Why have plants been implicated in the Ordovician and Devonian glaciations, but not the Proterozoic glaciations?

Correct Answer
verified

Which of the following was demonstrated by the Miller-Urey experiment?

Correct Answer
verified

It has been discovered that enzyme-like catalysis can be carried out not only by enzymes but also by

Correct Answer
verified

The age of the Earth according to modern estimations is aboutrev: 02_12_2014_QC_45114

Correct Answer
verified

Prokaryotic organisms were the only life-forms present on earth for almost 2 billion years.Multicellular eukaryotes have only been around for about 25% of earth's history

Correct Answer
verified

The oldest fossils of eukaryotes have been estimated to be

Correct Answer
verified

Imagine that NASA discovered a new planet with an atmosphere rich in hydrogen gas, hydrogen sulfide, ammonia and methane.We would call this a(n)

Correct Answer
verified

What is the advantage of having cyanobacteria living inside a cell?

Correct Answer
verified

In the original experiments by Stanley Miller and Harold Urey to synthesize organic molecules in an abiotic environment, which one of the following would you NOT expect to find in the collection flask?

Correct Answer
verified

Which eon would contain rocks with no fossils?

Correct Answer
verified

Exam 26: The Origin and Diversity of Life

Infolding of the cellular membrane has led to the development of the

Correct AnswerverifiedShow Answer

All of the following were produced in experiments on primitive Earth conditions conducted by Miller-Urey and others, except for

Correct AnswerverifiedShow Answer

Why have plants been implicated in the Ordovician and Devonian glaciations, but not the Proterozoic glaciations?

Correct AnswerverifiedShow Answer

Which of the following was demonstrated by the Miller-Urey experiment?

Correct AnswerverifiedShow Answer

It has been discovered that enzyme-like catalysis can be carried out not only by enzymes but also by

Correct AnswerverifiedShow Answer

The age of the Earth according to modern estimations is aboutrev: 02_12_2014_QC_45114

Correct AnswerverifiedShow Answer

Prokaryotic organisms were the only life-forms present on earth for almost 2 billion years.Multicellular eukaryotes have only been around for about 25% of earth's history

Correct AnswerverifiedShow Answer

The oldest fossils of eukaryotes have been estimated to be

Correct AnswerverifiedShow Answer

Imagine that NASA discovered a new planet with an atmosphere rich in hydrogen gas, hydrogen sulfide, ammonia and methane.We would call this a(n)

Correct AnswerverifiedShow Answer

What is the advantage of having cyanobacteria living inside a cell?

Correct AnswerverifiedShow Answer

In the original experiments by Stanley Miller and Harold Urey to synthesize organic molecules in an abiotic environment, which one of the following would you NOT expect to find in the collection flask?

Correct AnswerverifiedShow Answer

Which eon would contain rocks with no fossils?

Correct AnswerverifiedShow Answer

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