Question 1

Stanley Miller's 1953 experiments assumed that early Earth's atmosphere contained

Accepted Answer

A) hydrogen cyanide, formaldehyde, hydrogen gas, and water vapour. 
B) ammonia, methane, hydrogen gas, and water vapour. 
C) ammonia, methane, oxygen gas, and water vapour. 
D) amino acids, methane, hydrogen cyanide, and water vapour. 
E) methane, formaldehyde, ammonia, and carbon dioxide. 
A) hydrogen cyanide, formaldehyde, hydrogen gas, and water vapour. 
B) ammonia, methane, hydrogen gas, and water vapour. 
C) ammonia, methane, oxygen gas, and water vapour. 
D) amino acids, methane, hydrogen cyanide, and water vapour. 
E) methane, formaldehyde, ammonia, and carbon dioxide.

Question 2

Stanley Miller's 1953 experiments proved that

Accepted Answer

A) life arose on Earth from simple inorganic molecules. 
B) organic molecules can be synthesized abiotically under conditions that may have existed on early Earth. 
C) life arose on Earth from simple organic molecules, with energy from lightning and volcanoes. 
D) the conditions on early Earth were conducive to the origin of life. 
E) the conditions on early Earth were conducive to the abiotic synthesis of organic molecules. 
A) life arose on Earth from simple inorganic molecules. 
B) organic molecules can be synthesized abiotically under conditions that may have existed on early Earth. 
C) life arose on Earth from simple organic molecules, with energy from lightning and volcanoes. 
D) the conditions on early Earth were conducive to the origin of life. 
E) the conditions on early Earth were conducive to the abiotic synthesis of organic molecules.

Question 3

What is the valence of carbon?

Accepted Answer

A) 1 
B) 2 
C) 4 
D) 6 
E) 12 
A) 1 
B) 2 
C) 4 
D) 6 
E) 12

Question 4

Use the following figure to answer the questions below.
  
-Which of the structures illustrated above is an impossible covalently bonded molecule?

Accepted Answer

A) A 
B) B 
C) C 
D) D 
E) E 
A) A 
B) B 
C) C 
D) D 
E) E

Question 5

Differences among organisms are caused by

Accepted Answer

A) large differences in elemental composition from organism to organism. 
B) differences in the types and relative amounts of organic molecules synthesized by each organism. 
C) differences in the elements that bond with carbon in each organism. 
D) differences in the sizes of the organic molecules in each organism. 
E) differences in inorganic compounds present in each organism. 
A) large differences in elemental composition from organism to organism. 
B) differences in the types and relative amounts of organic molecules synthesized by each organism. 
C) differences in the elements that bond with carbon in each organism. 
D) differences in the sizes of the organic molecules in each organism. 
E) differences in inorganic compounds present in each organism.

Question 6

Compared to a hydrocarbon chain where all the carbon atoms are linked by single bonds,a hydrocarbon chain with the same number of carbon atoms,but with one or more double bonds,will

Accepted Answer

A) be more flexible in structure. 
B) be more constrained in structure. 
C) be more polar. 
D) have more hydrogen atoms. 
E) have fewer structurally distinct isomers. 
A) be more flexible in structure. 
B) be more constrained in structure. 
C) be more polar. 
D) have more hydrogen atoms. 
E) have fewer structurally distinct isomers.

Exam 4: Carbon and the Molecular Diversity of Life

Stanley Miller's 1953 experiments assumed that early Earth's atmosphere contained

Stanley Miller's 1953 experiments proved that

What is the valence of carbon?

Use the following figure to answer the questions below. -Which of the structures illustrated above is an impossible covalently bonded molecule?

Differences among organisms are caused by

Compared to a hydrocarbon chain where all the carbon atoms are linked by single bonds,a hydrocarbon chain with the same number of carbon atoms,but with one or more double bonds,will

Introduction: Evolution and Themes of Biology

The Chemical Context of Life

Water and Life

The Structure and Function of Large Biological Molecules

A Tour of the Cell

Membrane Structure and Function

An Introduction to Metabolism

Cellular Respiration and Fermentation

Photosynthesis

Cell Communication

The Cell Cycle

Meiosis and Sexual Life Cycles

Mendel and the Gene Idea

The Chromosomal Basis of Inheritance

The Molecular Basis of Inheritance

From Gene to Protein

Regulation of Gene Expression

Viruses

DNA Tools and Biotechnology

Genomes and Their Evolution

Descent with Modification: A Darwinian View of Life

The Evolution of Populations

The Origin of Species

The History of Life on Earth

Phylogeny and the Tree of Life

Bacteria and Archaea

Protists

Plant Diversity I: How Plants Colonized Land

Plant Diversity II: The Evolution of Seed Plants

Fungi

An Overview of Animal Diversity

An Introduction to Invertebrates

The Origin and Evolution of Vertebrates

Plant Structure,Growth,and Development

Resource Acquisition and Transport in Vascular Plants

Soil and Plant Nutrition

Angiosperm Reproduction and Biotechnology

Plant Responses to Internal and External Signals

Basic Principles of Animal Form and Function

Animal Nutrition

Circulation and Gas Exchange

The Immune System

Osmoregulation and Excretion

Hormones and the Endocrine System

Animal Reproduction

Animal Development

Neurons,Synapses,and Signalling

Nervous Systems

Sensory and Motor Mechanisms

Animal Behaviour

An Introduction to Ecology and the Biosphere

Population Ecology

Community Ecology

Ecosystems and Restoration Ecology

Conservation Biology and Global Change

Filters