Question 1

The Cenozoic is often referred to the age of all of the following EXCEPT:

Accepted Answer

A)  insects. 
B)  mammals. 
C)  flowering plants. 
D)  birds. 
E)  reptiles 
A)  insects. 
B)  mammals. 
C)  flowering plants. 
D)  birds. 
E)  reptiles

Question 2

Amphibians evolved directly from what ancestral organisms?

Accepted Answer

A)  reptiles 
B)  shelled invertebrates 
C)  fishes 
D)  soft-bodied animals 
E)  marine invertebrates 
A)  reptiles 
B)  shelled invertebrates 
C)  fishes 
D)  soft-bodied animals 
E)  marine invertebrates

Question 3

Presently, it is thought that organic polymers may have formed and accumulated on:

Accepted Answer

A)  water and shells. 
B)  sand and mud. 
C)  silt and sand. 
D)  rocks and clay. 
E)  sand and heavy metals. 
A)  water and shells. 
B)  sand and mud. 
C)  silt and sand. 
D)  rocks and clay. 
E)  sand and heavy metals.

Question 4

The hypothesis that organic molecules formed near the Earth's surface in pools of water is called the:

Accepted Answer

A)  clay hypothesis. 
B)  iron-sulfur world hypothesis. 
C)  iron-clay hypothesis. 
D)  organic broth hypothesis. 
E)  prebiotic soup hypothesis. 
A)  clay hypothesis. 
B)  iron-sulfur world hypothesis. 
C)  iron-clay hypothesis. 
D)  organic broth hypothesis. 
E)  prebiotic soup hypothesis.

Question 5

It has been suggested that RNA was the first informational molecule to evolve because:

Accepted Answer

A)  RNA molecules are more central to modern inheritance than DNA. 
B)  RNA molecules can catalyze a variety of biologically important reactions. 
C)  RNA molecules degrade more slowly in solution than DNA molecules. 
D)  RNA molecules were the first molecules synthesized by Miller and Urey. 
E)  RNA molecules have different structures.. 
A)  RNA molecules are more central to modern inheritance than DNA. 
B)  RNA molecules can catalyze a variety of biologically important reactions. 
C)  RNA molecules degrade more slowly in solution than DNA molecules. 
D)  RNA molecules were the first molecules synthesized by Miller and Urey. 
E)  RNA molecules have different structures..

Question 6

MATCHING
Match the period with the biological events
a.Cambrian 542mya
d.Jurassic 200mya
b.Carboniferous 359 mya
e.Quaternary 2.6 mya
c.Devonian 488 mya
-Bacteria and cyanobacteria, algae, fungi, age of marine invertebrates, first chordates

Accepted Answer

The answer of MATCHING
Match the period with the biological events
a.Cambrian...

Question 7

Chemical evolution:

Accepted Answer

A)  cannot be investigated experimentally. 
B)  was tested in experiments performed by Watson and Crick. 
C)  occurred about 1 billion years ago. 
D)  resulted in simple organic molecules. 
E)  started with unicellular prokaryotic organisms. 
A)  cannot be investigated experimentally. 
B)  was tested in experiments performed by Watson and Crick. 
C)  occurred about 1 billion years ago. 
D)  resulted in simple organic molecules. 
E)  started with unicellular prokaryotic organisms.

Question 8

Millions of years ago, the activity of which cellular organelle would have been dependent upon the presence of cyanobacteria?

Accepted Answer

A)  Golgi 
B)  nucleus 
C)  ribosome 
D)  endoplasmic reticulum 
E)  mitochondrion 
A)  Golgi 
B)  nucleus 
C)  ribosome 
D)  endoplasmic reticulum 
E)  mitochondrion

Question 9

The first photosynthetic organisms to obtain hydrogen by splitting water were the cyanobacteria .
__________

Accepted Answer

A) True 
 B)False

Question 10

The hypothesis that life developed from nonliving matter is known as:

Accepted Answer

A)  abiotic evolution. 
B)  chemical evolution. 
C)  natural selection. 
D)  organic evolution. 
E)  inorganic evolution. 
A)  abiotic evolution. 
B)  chemical evolution. 
C)  natural selection. 
D)  organic evolution. 
E)  inorganic evolution.

Question 11

During the Oligocene epoch, specializations in mammals that are suggestive of a more open type of habitat include all of the following except::

Accepted Answer

A)  longer legs. 
B)  larger body size. 
C)  specialized teeth. 
D)  larger relative brain size. 
E)  the amniote egg. 
A)  longer legs. 
B)  larger body size. 
C)  specialized teeth. 
D)  larger relative brain size. 
E)  the amniote egg.

Question 12

Among the following, which is the longest unit of geological time (i.e., the most inclusive)?

Accepted Answer

A)  century 
B)  era 
C)  epoch 
D)  period 
E)  millennium 
A)  century 
B)  era 
C)  epoch 
D)  period 
E)  millennium

Question 13

One source of fossil organisms in Precambrian rock formations is:

Accepted Answer

A)  Yixian fossils. 
B)  Ediacarian fossils. 
C)  Burgess Shale fossils. 
D)  Chenjiang fossils. 
E)  index fossils. 
A)  Yixian fossils. 
B)  Ediacarian fossils. 
C)  Burgess Shale fossils. 
D)  Chenjiang fossils. 
E)  index fossils.

Question 14

Prebiotic soup hypothesis proposes that organic molecules formed from cracks in the ocean floor.
____________

Accepted Answer

A) True 
 B)False

Question 15

Figure 21-2
Use the figure to answer the corresponding question(s).  
-The animal in Figure 21-2 represents:

Accepted Answer

A)  a mosasaur. 
B)  an ichthyosaur. 
C)  a pterosaur. 
D)  a thecodont. 
E)  a plesiosaur. 
A)  a mosasaur. 
B)  an ichthyosaur. 
C)  a pterosaur. 
D)  a thecodont. 
E)  a plesiosaur.

Question 16

Provide at least two types of evidence that support the endosymbiont theory.

Accepted Answer

Concepts to Consider: Chloropl

Question 17

Precambrian rocks contain fossils of:

Accepted Answer

A)  only single celled organisms. 
B)  great forests of flowering plants. 
C)  the first insects. 
D)  cells and simple organisms. 
E)  primitive fish. 
A)  only single celled organisms. 
B)  great forests of flowering plants. 
C)  the first insects. 
D)  cells and simple organisms. 
E)  primitive fish.

Question 18

The hypothesis that organic molecules formed near deep sea hydrothermal vents is called the:

Accepted Answer

A)  iron-sulfur world hypothesis. 
B)  iron-clay hypothesis. 
C)  organic sea hypothesis. 
D)  prebiotic soup hypothesis. 
E)  sulfur vent hypothesis. 
A)  iron-sulfur world hypothesis. 
B)  iron-clay hypothesis. 
C)  organic sea hypothesis. 
D)  prebiotic soup hypothesis. 
E)  sulfur vent hypothesis.

Question 19

In the process of splitting water during photosynthesis, the first cyanobacteria released:

Accepted Answer

A)  hydrogen gas. 
B)  oxygen gas. 
C)  photons of light. 
D)  heat from longer wavelengths of light. 
E)  electrons, protons, and neutrons. 
A)  hydrogen gas. 
B)  oxygen gas. 
C)  photons of light. 
D)  heat from longer wavelengths of light. 
E)  electrons, protons, and neutrons.

Question 20

MATCHING
Match the period with the biological events
a.Cambrian 542mya
d.Jurassic 200mya
b.Carboniferous 359 mya
e.Quaternary 2.6 mya
c.Devonian 488 mya
-First forests, gymnosperms appear, wingless insects appear, fish with jaws, amphibians appear

Accepted Answer

The answer of MATCHING
Match the period with the biological events
a.Cambrian...

Exam 21: The Origin and Evolutionary History of Life

The Cenozoic is often referred to the age of all of the following EXCEPT:

Amphibians evolved directly from what ancestral organisms?

Presently, it is thought that organic polymers may have formed and accumulated on:

The hypothesis that organic molecules formed near the Earth's surface in pools of water is called the:

It has been suggested that RNA was the first informational molecule to evolve because:

MATCHING Match the period with the biological events a.Cambrian 542mya d.Jurassic 200mya b.Carboniferous 359 mya e.Quaternary 2.6 mya c.Devonian 488 mya -Bacteria and cyanobacteria, algae, fungi, age of marine invertebrates, first chordates

Chemical evolution:

Millions of years ago, the activity of which cellular organelle would have been dependent upon the presence of cyanobacteria?

The first photosynthetic organisms to obtain hydrogen by splitting water were the cyanobacteria . __________

The hypothesis that life developed from nonliving matter is known as:

During the Oligocene epoch, specializations in mammals that are suggestive of a more open type of habitat include all of the following except::

Among the following, which is the longest unit of geological time (i.e., the most inclusive)?

One source of fossil organisms in Precambrian rock formations is:

Prebiotic soup hypothesis proposes that organic molecules formed from cracks in the ocean floor. ____________

Figure 21-2 Use the figure to answer the corresponding question(s). -The animal in Figure 21-2 represents:

Provide at least two types of evidence that support the endosymbiont theory.

Precambrian rocks contain fossils of:

The hypothesis that organic molecules formed near deep sea hydrothermal vents is called the:

In the process of splitting water during photosynthesis, the first cyanobacteria released:

MATCHING Match the period with the biological events a.Cambrian 542mya d.Jurassic 200mya b.Carboniferous 359 mya e.Quaternary 2.6 mya c.Devonian 488 mya -First forests, gymnosperms appear, wingless insects appear, fish with jaws, amphibians appear

A View of Life

Atoms and Molecules: the Chemical Basis of Life

The Chemistry of Life: Organic Compounds

Organization of the Cell

Biological Membranes

Cell Communication

Energy and Metabolism

How Cells Make Atp: Energy-Releasing Pathways

Photosynthesis: Capturing Light Energy

Chromosomes, Mitosis, and Meiosis

The Basic Principles of Heredity

Dna: the Carrier of Genetic Information

Gene Expression

Gene Regulation

Dna Technology and Genomics

Human Genetics and the Human Genome

Developmental Genetics

Introduction to Darwinian Evolution

Evolutionary Change in Populations

Speciation and Macroevolution

The Evolution of Primates

Understanding Diversity: Systematics

Viruses and Subviral Agents

Bacteria and Archaea

Protists

Seedless Plants

Seed Plants

The Fungi

An Introduction to Animal Diversity

Sponges, Cnidarians, Ctenophores, and Protostomes

The Deuterostomes

Plant Structure, Growth, and Development

Leaf Structure and Function

Stem Structure and Transport

Roots and Mineral Nutrition

Reproduction in Flowering Plants

Plant Developmental Responses to External and Internal Signals

Animal Structure and Function: an Introduction

Protection, Support, and Movement

Neural Signaling

Neural Regulation

Sensory Systems

Internal Transport

The Immune System: Internal Defense

Gas Exchange

Processing Food and Nutrition

Osmoregulation and Disposal of Metabolic Wastes

Endocrine Regulation

Reproduction

Animal Development

Animal Behavior

Introduction to Ecology: Population Ecology

Community Ecology

Ecosystems and the Biosphere

Ecology and the Geography of Life

Biological Diversity and Conservation Biology

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