Question 1

Explain what diets that are high in saturated fats can cause in the circulatory system of a human.

Accepted Answer

High blood

Question 2

Many enzymes are:

Accepted Answer

A) carbohydrates 
B) nucleic acid 
C) lipids 
D) proteins 
A) carbohydrates 
B) nucleic acid 
C) lipids 
D) proteins

Question 3

In RNA,thymine is replaced with __________.

Accepted Answer

The answer of In RNA,thymine is replaced with __________....

Question 4

When a protein is denatured,which level of protein structure is unaffected?

Accepted Answer

A) Primary 
B) Secondary 
C) Tertiary 
D) Quaternary 
A) Primary 
B) Secondary 
C) Tertiary 
D) Quaternary

Question 5

The carbohydrate that is found in plant cell walls is:

Accepted Answer

A) starch 
B) cellulose 
C) chitin 
D) fructose 
E) sucrose 
A) starch 
B) cellulose 
C) chitin 
D) fructose 
E) sucrose

Question 6

All of the following are ways RNA differs from DNA except:

Accepted Answer

A) RNA is single-stranded 
B) RNA is a nucleic acid 
C) RNA contains ribose 
D) RNA contains uracil 
A) RNA is single-stranded 
B) RNA is a nucleic acid 
C) RNA contains ribose 
D) RNA contains uracil

Question 7

Describe the structure of DNA.

Accepted Answer

The monomer is a nucleotide of deoxyribo

Question 8

Fats composed of fatty acids that have double bonds in the fatty acids and have fewer than the maximum number of hydrogen atoms are:

Accepted Answer

A) saturated. 
B) liquids at room temperature. 
C) solid at room temperature. 
D) generally found in animal fats. 
E) made of glycerol plus two fatty acids. 
A) saturated. 
B) liquids at room temperature. 
C) solid at room temperature. 
D) generally found in animal fats. 
E) made of glycerol plus two fatty acids.

Question 9

A polysaccharide of glucose found in animals that is highly branched is:

Accepted Answer

A) starch 
B) cellulose 
C) chitin 
D) glycogen 
E) sucrose 
A) starch 
B) cellulose 
C) chitin 
D) glycogen 
E) sucrose

Question 10

Describe the four levels of protein structure and how they are affected by denaturation.

Accepted Answer

Primary structure is the sequence of ami

Question 11

All of the following are lipids except:

Accepted Answer

A) waxes 
B) cholesterol 
C) female sex hormones 
D) phospholipids 
E) glycogen 
A) waxes 
B) cholesterol 
C) female sex hormones 
D) phospholipids 
E) glycogen

Question 12

Nucleic acids are long polymers of repeating subunits called __________.

Accepted Answer

The answer of Nucleic acids are long polymers of repeating...

Question 13

Making and breaking molecules in the body require the aid of ____________ to help the reactions proceed.

Accepted Answer

A) heat 
B) water 
C) blood 
D) enzymes 
A) heat 
B) water 
C) blood 
D) enzymes

Question 14

The sugar found in DNA is:

Accepted Answer

A) lactose 
B) glucose 
C) ribose 
D) deoxyribose 
E) glycogen 
A) lactose 
B) glucose 
C) ribose 
D) deoxyribose 
E) glycogen

Question 15

Chargaff's rule says:

Accepted Answer

A) that there are 20 amino acids that make up all proteins 
B) that in DNA molecules,the amount of adenine always equals the amount of thymine and the amount of cytosine always equals the amount of guanine 
C) lipids always will be hydrophobic molecules 
D) that the ratio of carbon atoms to hydrogen atoms to oxygen atoms is 1:2:1 in carbohydrates 
E) macromolecules are formed by dehydration synthesis reactions 
A) that there are 20 amino acids that make up all proteins 
B) that in DNA molecules,the amount of adenine always equals the amount of thymine and the amount of cytosine always equals the amount of guanine 
C) lipids always will be hydrophobic molecules 
D) that the ratio of carbon atoms to hydrogen atoms to oxygen atoms is 1:2:1 in carbohydrates 
E) macromolecules are formed by dehydration synthesis reactions

Question 16

The bases of the two DNA chains are linked in the middle of the molecule by _________ bonds.

Accepted Answer

A) covalent 
B) ionic 
C) hydrogen 
D) There are no bonds connecting the chains. 
A) covalent 
B) ionic 
C) hydrogen 
D) There are no bonds connecting the chains.

Question 17

The final three-dimensional shape of a single polypeptide is called its _____________ structure.

Accepted Answer

A) primary 
B) secondary 
C) tertiary 
D) quaternary 
A) primary 
B) secondary 
C) tertiary 
D) quaternary

Question 18

Which is incorrect about proteins?

Accepted Answer

A) The main function of protein is energy storage. 
B) Proteins can be enzymes. 
C) Proteins are polymers of amino acids. 
D) The sequence of amino acids determines the identity of the protein. 
E) Some proteins have a transport function. 
A) The main function of protein is energy storage. 
B) Proteins can be enzymes. 
C) Proteins are polymers of amino acids. 
D) The sequence of amino acids determines the identity of the protein. 
E) Some proteins have a transport function.

Question 19

The building blocks of carbohydrates are:

Accepted Answer

A) amino acids 
B) polypeptides 
C) monosaccharides 
D) nucleotides 
A) amino acids 
B) polypeptides 
C) monosaccharides 
D) nucleotides

Question 20

Many mammals supply energy to their young in the form of __________.

Accepted Answer

The answer of Many mammals supply energy to their young...

Exam 3: Molecules of Life

Explain what diets that are high in saturated fats can cause in the circulatory system of a human.

Many enzymes are:

In RNA,thymine is replaced with __________.

When a protein is denatured,which level of protein structure is unaffected?

The carbohydrate that is found in plant cell walls is:

All of the following are ways RNA differs from DNA except:

Describe the structure of DNA.

Fats composed of fatty acids that have double bonds in the fatty acids and have fewer than the maximum number of hydrogen atoms are:

A polysaccharide of glucose found in animals that is highly branched is:

Describe the four levels of protein structure and how they are affected by denaturation.

All of the following are lipids except:

Nucleic acids are long polymers of repeating subunits called __________.

Making and breaking molecules in the body require the aid of ____________ to help the reactions proceed.

The sugar found in DNA is:

Chargaff's rule says:

The bases of the two DNA chains are linked in the middle of the molecule by _________ bonds.

The final three-dimensional shape of a single polypeptide is called its _____________ structure.

Which is incorrect about proteins?

The building blocks of carbohydrates are:

Many mammals supply energy to their young in the form of __________.

The Science of Biology

The Chemistry of Life

Cells

Energy and Life

Photosynthesis: Acquiring Energy From the Sun

How Cells Harvest Energy From Food

Mitosis

Meiosis

Foundations of Genetics

DNA: the Genetic Material

How Genes Work

Genomics and Biotechnology

Evolution and Natural Selection

How We Name Living Things

Prokaryotes: the First Single-Celled Creatures

Protists: Advent of the Eukaryotes

Fungi Invade the Land

Evolution of the Animal Phyla

History of the Vertebrates

How Humans Evolved

The Animal Body and How It Moves

Circulation

Respiration

The Path of Food Through the Animal Body

Maintaining the Internal Environment

How the Animal Body Defends Itself

The Nervous System

The Senses

Chemical Signaling Within the Animal Body

Reproduction and Development

Evolution of Plants

Plant Form and Function

Plant Reproduction and Growth

Populations and Communities

Ecosystems

Behavior and the Environment

Human Influences on the Living World

Filters