Question 1

Describe the structure of phospholipids,and state where they are found in cells.

Accepted Answer

Phospholipids have hydrophobic tails and

Question 2

The two chains of nucleotides in a DNA molecule are held together by:

Accepted Answer

A) covalent bonds. 
B) ionic bonds. 
C) hydrogen bonds. 
D) peptide bonds. 
E) hydrophobic interactions. 
A) covalent bonds. 
B) ionic bonds. 
C) hydrogen bonds. 
D) peptide bonds. 
E) hydrophobic interactions.

Question 3

Explain the relationship between DNA and proteins.

Accepted Answer

DNA is the primary information

Question 4

Explain how a protein ends up with its final shape.

Accepted Answer

The amino acid sequence determines how t

Question 5

Hydroxyl groups are commonly found in:

Accepted Answer

A) amino acids. 
B) DNA. 
C) carbohydrates. 
D) fatty acids. 
A) amino acids. 
B) DNA. 
C) carbohydrates. 
D) fatty acids.

Question 6

You go the store to buy some lard for cooking.You notice when you get home that the lard is solid at room temperature.What does this tell you about the fat in lard,and how does this explain it being solid at room temperature? What type of fat would not be solid at room temperature,and why?

Accepted Answer

Lard is made up of saturated fat that st

Question 7

A triglyceride contains ________ fatty acid chains,whereas a phospholipid contains ________ fatty acid chains.

Accepted Answer

A) two; three 
B) four; two 
C) two; four 
D) three; two 
A) two; three 
B) four; two 
C) two; four 
D) three; two

Question 8

Chitin and cellulose are examples of:

Accepted Answer

A) structural polysaccharides. 
B) storage polysaccharides. 
C) monosaccharides. 
D) disacchrides. 
A) structural polysaccharides. 
B) storage polysaccharides. 
C) monosaccharides. 
D) disacchrides.

Question 9

A nucleotide is a polymer of nucleic acids.

Accepted Answer

A) True 
 B)False

Question 10

Cholesterol is used to make other steroids in the body.

Accepted Answer

A) True 
 B)False

Question 11

All other levels of protein structure are dictated by the primary structure.

Accepted Answer

A) True 
 B)False

Question 12

In the following chemical reaction,which molecule is the disaccharide? glucose + fructose → sucrose + water

Accepted Answer

A) sucrose 
B) glucose 
C) water 
D) fructose 
A) sucrose 
B) glucose 
C) water 
D) fructose

Question 13

Mutations are changes to the information in DNA.What would happen to an enzyme's ability to function if a mutation changed the order of some of the amino acids in its polypeptide chain?

Accepted Answer

Like all proteins,the function of an enz

Question 14

Ribosomes are made up of protein and ________.

Accepted Answer

The answer of Ribosomes are made up of protein and...

Question 15

All of the following are monosaccharides except:

Accepted Answer

A) fructose. 
B) cellulose. 
C) glucose. 
D) deoxyribose. 
A) fructose. 
B) cellulose. 
C) glucose. 
D) deoxyribose.

Question 16

Butter,which is made from milk fat,tends to be harder at room temperature than most margarines.If you wanted to make a butter that is softer at room temperature,you should consider:

Accepted Answer

A) making the fatty acid chains longer. 
B) making fatty acid chains with fewer kinks. 
C) creating more double bonds in the fatty acid chains. 
D) saturating the fatty acid chains. 
E) adding more than three fatty acid chains to the triglycerides. 
A) making the fatty acid chains longer. 
B) making fatty acid chains with fewer kinks. 
C) creating more double bonds in the fatty acid chains. 
D) saturating the fatty acid chains. 
E) adding more than three fatty acid chains to the triglycerides.

Question 17

The chitin that makes up the exoskeleton of insects is a polymer of amino acids.

Accepted Answer

A) True 
 B)False

Question 18

________ is a branch of chemistry that studies carbon compounds.

Accepted Answer

The answer of ________ is a branch of chemistry that...

Question 19

Unsaturated fatty acids:

Accepted Answer

A) have one or more double bonds between the carbons. 
B) are usually found in animal fats. 
C) have long been linked with heart disease. 
D) contain the maximum number of hydrogen atoms possible. 
A) have one or more double bonds between the carbons. 
B) are usually found in animal fats. 
C) have long been linked with heart disease. 
D) contain the maximum number of hydrogen atoms possible.

Question 20

All of the following are functions of proteins except:

Accepted Answer

A) hormone activity. 
B) enzyme activity. 
C) serving as structural building materials. 
D) serving as transport molecules. 
E) storing genetic information. 
A) hormone activity. 
B) enzyme activity. 
C) serving as structural building materials. 
D) serving as transport molecules. 
E) storing genetic information.

Exam 3: Lifes Components: Biological Molecules

Describe the structure of phospholipids,and state where they are found in cells.

The two chains of nucleotides in a DNA molecule are held together by:

Explain the relationship between DNA and proteins.

Explain how a protein ends up with its final shape.

Hydroxyl groups are commonly found in:

You go the store to buy some lard for cooking.You notice when you get home that the lard is solid at room temperature.What does this tell you about the fat in lard,and how does this explain it being solid at room temperature? What type of fat would not be solid at room temperature,and why?

A triglyceride contains ________ fatty acid chains,whereas a phospholipid contains ________ fatty acid chains.

Chitin and cellulose are examples of:

A nucleotide is a polymer of nucleic acids.

Cholesterol is used to make other steroids in the body.

All other levels of protein structure are dictated by the primary structure.

In the following chemical reaction,which molecule is the disaccharide? glucose + fructose → sucrose + water

Mutations are changes to the information in DNA.What would happen to an enzyme's ability to function if a mutation changed the order of some of the amino acids in its polypeptide chain?

Ribosomes are made up of protein and ________.

All of the following are monosaccharides except:

Butter,which is made from milk fat,tends to be harder at room temperature than most margarines.If you wanted to make a butter that is softer at room temperature,you should consider:

The chitin that makes up the exoskeleton of insects is a polymer of amino acids.

________ is a branch of chemistry that studies carbon compounds.

Unsaturated fatty acids:

All of the following are functions of proteins except:

Science As a Way of Learning: a Guide to the Natural World

Fundamental Building Blocks: Chemistry, water, and Ph

Lifes Home: the Cell

Lifes Border: the Plasma Membrane

Lifes Mainspring: an Introduction to Energy

Vital Harvest: Deriving Energy From Food

The Green Worlds Gift: Photosynthesis

The Links in Lifes Chain: Genetics and Cell Division

Preparing for Sexual Reproduction: Meiosis

The First Geneticist: Mendel and His Discoveries

Units of Heredity: Chromosomes and Inheritance

Passing on Lifes Information: Dna Structure and Replication

How Proteins Are Made: Genetic Transcription, translation, and Regulation

The Future Isnt What It Used to Be: Biotechnology

An Introduction to Evolution: Charles Darwin, evolutionary Thought, and the Evidence for Evolution

The Means of Evolution: Microevolution

The Outcomes of Evolution: Macroevolution

A Slow Unfolding: the History of Life on Earth

Arriving Late,traveling Far: the Evolution of Human Beings

Viruses,bacteria,archaea,and Protists: the Diversity of Life 1

Fungi: the Diversity of Life 2

Animals: the Diversity of Life 3

Plants: the Diversity of Life 4

The Angiosperms: Form and Function in Flowering Plants

Body Support and Movement: the Integumentary, skeletal, and Muscular Systems

Communication and Control 1: the Nervous System

Communication and Control 2: the Endocrine System

Defending the Body: the Immune System

Transport and Exchange 1: Blood and Breath

Transport and Exchange 2: Digestion, nutrition, and Elimination

An Amazingly Detailed Script: Animal Development

How the Baby Came to Be: Human Reproduction

An Interactive Living World 1: Populations in Ecology

An Interactive Living World 2: Communities in Ecology

An Interactive Living World 3: Ecosystems and Biomes

Filters

A triglyceride contains fatty acid chains,whereas a phospholipid contains fatty acid chains.