Question 1

Some scientists theorize that early life was RNA-based. True or False?

Accepted Answer

A) True 
 B)False

Question 2

Birds and mammals have a more active lifestyle than reptiles due to:

Accepted Answer

A) internal fertilization. 
B) a slower metabolism. 
C) insulation over their body surface. 
D) internal fertilization and a high, constant body temperature. 
E) a high, constant body temperature and insulation over their body surface. 
A) internal fertilization. 
B) a slower metabolism. 
C) insulation over their body surface. 
D) internal fertilization and a high, constant body temperature. 
E) a high, constant body temperature and insulation over their body surface.

Question 3

The earliest fossil organisms resemble modern:

Accepted Answer

A) protists. 
B) green algae. 
C) eukaryotes. 
D) prokaryotes. 
E) protocells. 
A) protists. 
B) green algae. 
C) eukaryotes. 
D) prokaryotes. 
E) protocells.

Question 4

The earliest group of land plants whose reproduction did not require water for swimming sperm were the:

Accepted Answer

A) conifers. 
B) ferns. 
C) club mosses. 
D) algae. 
E) lobefins. 
A) conifers. 
B) ferns. 
C) club mosses. 
D) algae. 
E) lobefins.

Question 5

Scientists find several sets of fossil remains in a cave. The skeletons appear have been buried with stone tools and carved jewelry of ivory and bone. The artifacts are dated to 90,000 years old. The skeletons are anatomically similar to modern humans. Based on this information, the skeletons most likely are all:

Accepted Answer

A) Neanderthals. 
B) Homo floresiensis. 
C) Homo erectus. 
D) Cro-Magnons. 
E) Australopithecus afarensis. 
A) Neanderthals. 
B) Homo floresiensis. 
C) Homo erectus. 
D) Cro-Magnons. 
E) Australopithecus afarensis.

Question 6

To be classified as a eukaryote, an organism must have:

Accepted Answer

A) a cell wall. 
B) flagella. 
C) internal membranes. 
D) sexual reproduction. 
E) centrioles. 
A) a cell wall. 
B) flagella. 
C) internal membranes. 
D) sexual reproduction. 
E) centrioles.

Question 7

Experiments that attempt to simulate conditions on early Earth have produced results that hint at the possible origins of life. What have the experiments produced?

Accepted Answer

The early experiments have pro

Question 8

Which is the correct series of events in the evolution of life on Earth?

Accepted Answer

A) O2 → photosynthesis → aerobic metabolism 
B) aerobic metabolism → photosynthesis → O2 
C) O2 → aerobic metabolism → photosynthesis 
D) photosynthesis → O2 → aerobic metabolism 
A) O2 → photosynthesis → aerobic metabolism 
B) aerobic metabolism → photosynthesis → O2 
C) O2 → aerobic metabolism → photosynthesis 
D) photosynthesis → O2 → aerobic metabolism

Question 9

What adaptations did ancient algae have to make as they washed ashore and evolved into land plants?

Accepted Answer

Ancient algae evolved waterproof coating

Question 10

Lobefins are thought to have evolved into ________.

Accepted Answer

The answer of Lobefins are thought to have evolved into...

Question 11

Which characteristic sets hominins apart from other primates?

Accepted Answer

A) bipedal locomotion 
B) binocular vision 
C) a four-chambered heart 
D) grasping hands 
E) facial hair 
A) bipedal locomotion 
B) binocular vision 
C) a four-chambered heart 
D) grasping hands 
E) facial hair

Question 12

Probably the greatest advantage for the original multicellular organisms was their ability to:

Accepted Answer

A) use more oxygen. 
B) increase their metabolism. 
C) increase their food intake. 
D) avoid predators. 
E) photosynthesize. 
A) use more oxygen. 
B) increase their metabolism. 
C) increase their food intake. 
D) avoid predators. 
E) photosynthesize.

Question 13

Flowering plants first rose to prominence in the:

Accepted Answer

A) Cambrian period. 
B) Precambrian era. 
C) Cretaceous period. 
D) Eocene epoch. 
E) Paleozoic era. 
A) Cambrian period. 
B) Precambrian era. 
C) Cretaceous period. 
D) Eocene epoch. 
E) Paleozoic era.

Question 14

The earliest photosynthetic organisms obtained hydrogen from:

Accepted Answer

A) water. 
B) methane. 
C) chlorophyll. 
D) hydrogen sulfide. 
E) hydrogen bromide. 
A) water. 
B) methane. 
C) chlorophyll. 
D) hydrogen sulfide. 
E) hydrogen bromide.

Question 15

If the Cretaceous mass extinction had not occurred, which group of animals would probably include the largest land animals today?

Accepted Answer

A) amphibians 
B) reptiles 
C) birds 
D) insects 
E) bony fish 
A) amphibians 
B) reptiles 
C) birds 
D) insects 
E) bony fish

Question 16

If you open a can of chicken noodle soup and immediately examine it microscopically, you will find no microorganisms. If you let the open can sit on the shelf for a few weeks and then examine it, you will find lots of microorganisms. The origin of these microorganisms is most likely:

Accepted Answer

A) spontaneous generation. 
B) improper sterilization of the soup prior to canning. 
C) prebiotic evolution. 
D) endosymbiotic evolution. 
E) airborne microorganisms. 
A) spontaneous generation. 
B) improper sterilization of the soup prior to canning. 
C) prebiotic evolution. 
D) endosymbiotic evolution. 
E) airborne microorganisms.

Question 17

The oldest fossil organisms presently known have been dated at approximately how many years old?

Accepted Answer

A) 4)5 billion 
B) 3)5 billion 
C) 1)7 billion 
D) less than 1.7 billion 
E) more than 4.5 billion 
A) 4)5 billion 
B) 3)5 billion 
C) 1)7 billion 
D) less than 1.7 billion 
E) more than 4.5 billion

Question 18

About 530 million years ago, what adaptation evolved to make fish the dominant predators of the sea?

Accepted Answer

A) jaws 
B) scales 
C) fins 
D) internal skeleton 
E) sensory organs 
A) jaws 
B) scales 
C) fins 
D) internal skeleton 
E) sensory organs

Question 19

Miller and Urey's experiments attempting to recreate the prebiotic environment produced prokaryotic cells. True or False?

Accepted Answer

A) True 
 B)False

Question 20

The earliest group of land animals was the:

Accepted Answer

A) protists. 
B) amphibians. 
C) lobefins. 
D) arthropods. 
E) lungfish. 
A) protists. 
B) amphibians. 
C) lobefins. 
D) arthropods. 
E) lungfish.

Exam 17: The History of Life

Some scientists theorize that early life was RNA-based. True or False?

Birds and mammals have a more active lifestyle than reptiles due to:

The earliest fossil organisms resemble modern:

The earliest group of land plants whose reproduction did not require water for swimming sperm were the:

To be classified as a eukaryote, an organism must have:

Experiments that attempt to simulate conditions on early Earth have produced results that hint at the possible origins of life. What have the experiments produced?

Which is the correct series of events in the evolution of life on Earth?

What adaptations did ancient algae have to make as they washed ashore and evolved into land plants?

Lobefins are thought to have evolved into ________.

Which characteristic sets hominins apart from other primates?

Probably the greatest advantage for the original multicellular organisms was their ability to:

Flowering plants first rose to prominence in the:

The earliest photosynthetic organisms obtained hydrogen from:

If the Cretaceous mass extinction had not occurred, which group of animals would probably include the largest land animals today?

If you open a can of chicken noodle soup and immediately examine it microscopically, you will find no microorganisms. If you let the open can sit on the shelf for a few weeks and then examine it, you will find lots of microorganisms. The origin of these microorganisms is most likely:

The oldest fossil organisms presently known have been dated at approximately how many years old?

About 530 million years ago, what adaptation evolved to make fish the dominant predators of the sea?

Miller and Urey's experiments attempting to recreate the prebiotic environment produced prokaryotic cells. True or False?

The earliest group of land animals was the:

An Introduction to Life on Earth

Atoms, Molecules, and Life

Biological Molecules

Cell Structure and Function

Cell Membrane Structure and Function

Energy Flow in the Life of a Cell

Capturing Solar Energy: Photosynthesis

Harvesting Energy: Glycolysis and Cellular Respiration

The Continuity of Life: Cellular Reproduction

Patterns of Inheritance

Dna: the Molecule of Heredity

Gene Expression and Regulation

Biotechnology

Principles of Evolution

How Populations Evolve

The Origin of Species

Systematics: Seeking Order Amidst Diversity

The Diversity of Prokaryotes and Viruses

The Diversity of Protists

The Diversity of Plants

The Diversity of Fungi

Animal Diversity I: Invertebrates

Animal Diversity Ii: Vertebrates

Animal Behavior

Population Growth and Regulation

Community Interactions

How Do Ecosystems Work

Earths Diverse Ecosystems

Conserving Earths Biodiversity

Homeostasis and the Organization of the Animal Body

Circulation

Respiration

Nutrition and Digestion

The Urinary System

Defenses Against Disease

Chemical Control of the Animal Body: the Endocrine System

The Nervous System

The Senses

Action and Support: the Muscles and Skeleton

Animal Reproduction

Animal Development

Plant Anatomy and Nutrient Transport

Plant Reproduction and Development

Plant Responses to the Environment

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