Question 1

Human body cells are approximately ________ water.

Accepted Answer

A) 95-99% 
B) 25-35% 
C) 50-55% 
D) 70-95% 
A) 95-99% 
B) 25-35% 
C) 50-55% 
D) 70-95%

Question 2

The hydrogen and oxygen atoms of a water molecule are held together by ________ bonds.

Accepted Answer

A) ionic 
B) hydrogen 
C) covalent 
D) polar 
A) ionic 
B) hydrogen 
C) covalent 
D) polar

Question 3

Which of the following is NOT a potential impact of ocean acidification?

Accepted Answer

A) Decreasing H⁺ concentrations 
B) Coral bleaching 
C) Changes in metabolism of marine animals 
D) Increasing carbonic acid concentrations 
A) Decreasing H⁺ concentrations 
B) Coral bleaching 
C) Changes in metabolism of marine animals 
D) Increasing carbonic acid concentrations

Question 4

The graph below shows data regarding radioactive decay of carbon-14.If decay continues to occur normally,how much C-14 will remain after 22,800 years?

Accepted Answer

A) 25% 
B) 12.5% 
C) 6)25% 
D) 3)125% 
A) 25% 
B) 12.5% 
C) 6)25% 
D) 3)125%

Question 5

The way Earth moves about the sun is most like ________.

Accepted Answer

A) a neutron and electron moving around a proton 
B) an electron moving around the nucleus of an atom 
C) a proton moving about an electron 
D) a neutron moving about a proton 
A) a neutron and electron moving around a proton 
B) an electron moving around the nucleus of an atom 
C) a proton moving about an electron 
D) a neutron moving about a proton

Question 6

When Heather grabbed the glass of ice water,the ice cubes were floating at the top.Why were the ice cubes floating in the water?

Accepted Answer

A) Water can store large amounts of heat. 
B) Water can moderate temperatures through evaporative cooling. 
C) The density of water decreases when it freezes. 
D) Water has a cohesive nature. 
A) Water can store large amounts of heat. 
B) Water can moderate temperatures through evaporative cooling. 
C) The density of water decreases when it freezes. 
D) Water has a cohesive nature.

Human body cells are approximately ________ water.

The hydrogen and oxygen atoms of a water molecule are held together by ________ bonds.

Which of the following is NOT a potential impact of ocean acidification?

The graph below shows data regarding radioactive decay of carbon-14.If decay continues to occur normally,how much C-14 will remain after 22,800 years?

The way Earth moves about the sun is most like ________.

When Heather grabbed the glass of ice water,the ice cubes were floating at the top.Why were the ice cubes floating in the water?

Introduction: Biology Today

The Molecules of Life

A Tour of the Cell

The Working Cell

Cellular Respiration: Obtaining Energy From Food

Photosynthesis: Using Light to Make Food

Cellular Reproduction: Cells From Cells

Patterns of Inheritance

The Structure and Function of Dna

How Genes Are Controlled

DNA Technology

How Populations Evolve

How Biological Diversity Evolves

The Evolution of Microbial Life

The Evolution of Plants and Fungi

The Evolution of Animals

An Introduction to Ecology and the Biosphere

Population Ecology

Communities and Ecosystems

Unifying Concepts of Animal Structure and Function

Nutrition and Digestion

Circulation and Respiration

The Bodys Defenses

Hormones

Reproduction and Development

Nervous,Sensory,and Locomotor Systems

The Life of a Flowering Plant

The Working Plant

Filters

Exam 2: Essential Chemistry for Biology

Human body cells are approximately ________ water.

The hydrogen and oxygen atoms of a water molecule are held together by ________ bonds.

Which of the following is NOT a potential impact of ocean acidification?

The graph below shows data regarding radioactive decay of carbon-14.If decay continues to occur normally,how much C-14 will remain after 22,800 years?

The way Earth moves about the sun is most like ________.

When Heather grabbed the glass of ice water,the ice cubes were floating at the top.Why were the ice cubes floating in the water?

Introduction: Biology Today

The Molecules of Life

A Tour of the Cell

The Working Cell

Cellular Respiration: Obtaining Energy From Food

Photosynthesis: Using Light to Make Food

Cellular Reproduction: Cells From Cells

Patterns of Inheritance

The Structure and Function of Dna

How Genes Are Controlled

DNA Technology

How Populations Evolve

How Biological Diversity Evolves

The Evolution of Microbial Life

The Evolution of Plants and Fungi

The Evolution of Animals

An Introduction to Ecology and the Biosphere

Population Ecology

Communities and Ecosystems

Unifying Concepts of Animal Structure and Function

Nutrition and Digestion

Circulation and Respiration

The Bodys Defenses

Hormones

Reproduction and Development

Nervous,Sensory,and Locomotor Systems

The Life of a Flowering Plant

The Working Plant

Filters