The reproductive system of the human body has a role in producing gametes (sperm and egg cells) for producing a new individual. This is called as a process of fertilization.

Question

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Answer 1

Question

Chapter 18, Problem 1A

Summary Introduction

Introduction:

The reproductive system of the human body has a role in producing gametes (sperm and egg cells) for producing a new individual. This is called as a process of fertilization.

Expert Solution & Answer

Answer to Problem 1A

Correct answer:

A single sperm enters an egg only because the changes occur in the zona pellucida. Therefore, option (c) is correct.

Explanation of Solution

Reason for the correct statement:

Fertilization is a process where there is union of an egg and a sperm for the formation of a zygote. There are certain steps in the process of fertilization. One of them is when the sperm enters the egg. As there is entry of the sperm cell into the egg cell, the zona pellucida becomes the membrane for fertilization after certain changes.

Option (c) is given as “changes occur in the zona pellucida”.

“Only a single sperm enters an egg because changes occur in the zona pellucida”, it is the right answer.

Hence, option (c) is correct.

Reasons for the incorrect statements:

Option (a) is given as “sperm have an acrosome”.
The sperms possess an acrosome that consists of the digestive enzymes. So, it is a wrong answer.

Option (b) is given as “corona radiata gets larger”.
A single sperm cell enters the corona radiata (adhering follicular cells) that surrounds the zona pellucida. It does not become large. So, it is a wrong answer.

Option (d) is given as “the cytoplasm hardens”.
The cytoplasm does not harden when the sperm nucleus enters the oocytes cytoplasm. So, it is a wrong answer.

Option (e) is given as “All of these are correct”.
As only one sperm can enter an egg because the changes occur in the zona pellucida and it not depend on other factors. So, it is a wrong answer.

Hence, options (a), (b), (d) and (e) are incorrect.

Conclusion

:

Only a single sperm enters an egg because changes occur in the zona pellucida layer.

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Answer 2

Question

Chapter 18, Problem 1A

Summary Introduction

Introduction:

The reproductive system of the human body has a role in producing gametes (sperm and egg cells) for producing a new individual. This is called as a process of fertilization.

Expert Solution & Answer

Answer to Problem 1A

Correct answer:

A single sperm enters an egg only because the changes occur in the zona pellucida. Therefore, option (c) is correct.

Explanation of Solution

Reason for the correct statement:

Fertilization is a process where there is union of an egg and a sperm for the formation of a zygote. There are certain steps in the process of fertilization. One of them is when the sperm enters the egg. As there is entry of the sperm cell into the egg cell, the zona pellucida becomes the membrane for fertilization after certain changes.

Option (c) is given as “changes occur in the zona pellucida”.

“Only a single sperm enters an egg because changes occur in the zona pellucida”, it is the right answer.

Hence, option (c) is correct.

Reasons for the incorrect statements:

Option (a) is given as “sperm have an acrosome”.
The sperms possess an acrosome that consists of the digestive enzymes. So, it is a wrong answer.

Option (b) is given as “corona radiata gets larger”.
A single sperm cell enters the corona radiata (adhering follicular cells) that surrounds the zona pellucida. It does not become large. So, it is a wrong answer.

Option (d) is given as “the cytoplasm hardens”.
The cytoplasm does not harden when the sperm nucleus enters the oocytes cytoplasm. So, it is a wrong answer.

Option (e) is given as “All of these are correct”.
As only one sperm can enter an egg because the changes occur in the zona pellucida and it not depend on other factors. So, it is a wrong answer.

Hence, options (a), (b), (d) and (e) are incorrect.

Conclusion

:

Only a single sperm enters an egg because changes occur in the zona pellucida layer.

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Answer 3

Question

Chapter 18, Problem 1A

Summary Introduction

Introduction:

The reproductive system of the human body has a role in producing gametes (sperm and egg cells) for producing a new individual. This is called as a process of fertilization.

Expert Solution & Answer

Answer to Problem 1A

Correct answer:

A single sperm enters an egg only because the changes occur in the zona pellucida. Therefore, option (c) is correct.

Explanation of Solution

Reason for the correct statement:

Fertilization is a process where there is union of an egg and a sperm for the formation of a zygote. There are certain steps in the process of fertilization. One of them is when the sperm enters the egg. As there is entry of the sperm cell into the egg cell, the zona pellucida becomes the membrane for fertilization after certain changes.

Option (c) is given as “changes occur in the zona pellucida”.

“Only a single sperm enters an egg because changes occur in the zona pellucida”, it is the right answer.

Hence, option (c) is correct.

Reasons for the incorrect statements:

Option (a) is given as “sperm have an acrosome”.
The sperms possess an acrosome that consists of the digestive enzymes. So, it is a wrong answer.

Option (b) is given as “corona radiata gets larger”.
A single sperm cell enters the corona radiata (adhering follicular cells) that surrounds the zona pellucida. It does not become large. So, it is a wrong answer.

Option (d) is given as “the cytoplasm hardens”.
The cytoplasm does not harden when the sperm nucleus enters the oocytes cytoplasm. So, it is a wrong answer.

Option (e) is given as “All of these are correct”.
As only one sperm can enter an egg because the changes occur in the zona pellucida and it not depend on other factors. So, it is a wrong answer.

Hence, options (a), (b), (d) and (e) are incorrect.

Conclusion

:

Only a single sperm enters an egg because changes occur in the zona pellucida layer.

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Answer 4

Question

Chapter 18, Problem 1A

Summary Introduction

Introduction:

The reproductive system of the human body has a role in producing gametes (sperm and egg cells) for producing a new individual. This is called as a process of fertilization.

Expert Solution & Answer

Answer to Problem 1A

Correct answer:

A single sperm enters an egg only because the changes occur in the zona pellucida. Therefore, option (c) is correct.

Explanation of Solution

Reason for the correct statement:

Fertilization is a process where there is union of an egg and a sperm for the formation of a zygote. There are certain steps in the process of fertilization. One of them is when the sperm enters the egg. As there is entry of the sperm cell into the egg cell, the zona pellucida becomes the membrane for fertilization after certain changes.

Option (c) is given as “changes occur in the zona pellucida”.

“Only a single sperm enters an egg because changes occur in the zona pellucida”, it is the right answer.

Hence, option (c) is correct.

Reasons for the incorrect statements:

Option (a) is given as “sperm have an acrosome”.
The sperms possess an acrosome that consists of the digestive enzymes. So, it is a wrong answer.

Option (b) is given as “corona radiata gets larger”.
A single sperm cell enters the corona radiata (adhering follicular cells) that surrounds the zona pellucida. It does not become large. So, it is a wrong answer.

Option (d) is given as “the cytoplasm hardens”.
The cytoplasm does not harden when the sperm nucleus enters the oocytes cytoplasm. So, it is a wrong answer.

Option (e) is given as “All of these are correct”.
As only one sperm can enter an egg because the changes occur in the zona pellucida and it not depend on other factors. So, it is a wrong answer.

Hence, options (a), (b), (d) and (e) are incorrect.

Conclusion

:

Only a single sperm enters an egg because changes occur in the zona pellucida layer.

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Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 5

Chapter 18, Problem 1A

Summary Introduction

Introduction:

The reproductive system of the human body has a role in producing gametes (sperm and egg cells) for producing a new individual. This is called as a process of fertilization.

Expert Solution & Answer

Answer to Problem 1A

Correct answer:

A single sperm enters an egg only because the changes occur in the zona pellucida. Therefore, option (c) is correct.

Explanation of Solution

Reason for the correct statement:

Fertilization is a process where there is union of an egg and a sperm for the formation of a zygote. There are certain steps in the process of fertilization. One of them is when the sperm enters the egg. As there is entry of the sperm cell into the egg cell, the zona pellucida becomes the membrane for fertilization after certain changes.

Option (c) is given as “changes occur in the zona pellucida”.

“Only a single sperm enters an egg because changes occur in the zona pellucida”, it is the right answer.

Hence, option (c) is correct.

Reasons for the incorrect statements:

Option (a) is given as “sperm have an acrosome”.
The sperms possess an acrosome that consists of the digestive enzymes. So, it is a wrong answer.

Option (b) is given as “corona radiata gets larger”.
A single sperm cell enters the corona radiata (adhering follicular cells) that surrounds the zona pellucida. It does not become large. So, it is a wrong answer.

Option (d) is given as “the cytoplasm hardens”.
The cytoplasm does not harden when the sperm nucleus enters the oocytes cytoplasm. So, it is a wrong answer.

Option (e) is given as “All of these are correct”.
As only one sperm can enter an egg because the changes occur in the zona pellucida and it not depend on other factors. So, it is a wrong answer.

Hence, options (a), (b), (d) and (e) are incorrect.

Conclusion

:

Only a single sperm enters an egg because changes occur in the zona pellucida layer.

Answer 6

Chapter 18, Problem 1A

Summary Introduction

Introduction:

The reproductive system of the human body has a role in producing gametes (sperm and egg cells) for producing a new individual. This is called as a process of fertilization.

Expert Solution & Answer

Answer to Problem 1A

Correct answer:

A single sperm enters an egg only because the changes occur in the zona pellucida. Therefore, option (c) is correct.

Explanation of Solution

Reason for the correct statement:

Fertilization is a process where there is union of an egg and a sperm for the formation of a zygote. There are certain steps in the process of fertilization. One of them is when the sperm enters the egg. As there is entry of the sperm cell into the egg cell, the zona pellucida becomes the membrane for fertilization after certain changes.

Option (c) is given as “changes occur in the zona pellucida”.

“Only a single sperm enters an egg because changes occur in the zona pellucida”, it is the right answer.

Hence, option (c) is correct.

Reasons for the incorrect statements:

Option (a) is given as “sperm have an acrosome”.
The sperms possess an acrosome that consists of the digestive enzymes. So, it is a wrong answer.

Option (b) is given as “corona radiata gets larger”.
A single sperm cell enters the corona radiata (adhering follicular cells) that surrounds the zona pellucida. It does not become large. So, it is a wrong answer.

Option (d) is given as “the cytoplasm hardens”.
The cytoplasm does not harden when the sperm nucleus enters the oocytes cytoplasm. So, it is a wrong answer.

Option (e) is given as “All of these are correct”.
As only one sperm can enter an egg because the changes occur in the zona pellucida and it not depend on other factors. So, it is a wrong answer.

Hence, options (a), (b), (d) and (e) are incorrect.

Conclusion

:

Only a single sperm enters an egg because changes occur in the zona pellucida layer.

Answer 7

Chapter 18, Problem 1A

Summary Introduction

Introduction:

The reproductive system of the human body has a role in producing gametes (sperm and egg cells) for producing a new individual. This is called as a process of fertilization.

Answer 8

Expert Solution & Answer

Answer to Problem 1A

Correct answer:

A single sperm enters an egg only because the changes occur in the zona pellucida. Therefore, option (c) is correct.

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

Explanation of Solution

Reason for the correct statement:

Fertilization is a process where there is union of an egg and a sperm for the formation of a zygote. There are certain steps in the process of fertilization. One of them is when the sperm enters the egg. As there is entry of the sperm cell into the egg cell, the zona pellucida becomes the membrane for fertilization after certain changes.

Option (c) is given as “changes occur in the zona pellucida”.

“Only a single sperm enters an egg because changes occur in the zona pellucida”, it is the right answer.

Hence, option (c) is correct.

Reasons for the incorrect statements:

Option (a) is given as “sperm have an acrosome”.
The sperms possess an acrosome that consists of the digestive enzymes. So, it is a wrong answer.

Option (b) is given as “corona radiata gets larger”.
A single sperm cell enters the corona radiata (adhering follicular cells) that surrounds the zona pellucida. It does not become large. So, it is a wrong answer.

Option (d) is given as “the cytoplasm hardens”.
The cytoplasm does not harden when the sperm nucleus enters the oocytes cytoplasm. So, it is a wrong answer.

Option (e) is given as “All of these are correct”.
As only one sperm can enter an egg because the changes occur in the zona pellucida and it not depend on other factors. So, it is a wrong answer.

Hence, options (a), (b), (d) and (e) are incorrect.

Answer 12

Conclusion

:

Only a single sperm enters an egg because changes occur in the zona pellucida layer.

Answer 13

Ch. 18.1 - Prob. 1LO Ch. 18.1 - Describe the steps in fertilization.Ch. 18.1 - Distinguish between the functions of the corona...Ch. 18.1 - Explain what prevents multiple sperm from...Ch. 18.2 - Prob. 1LO Ch. 18.2 - Prob. 2LO Ch. 18.2 - Prob. 3LO Ch. 18.2 - Prob. 4LO Ch. 18.2 - Prob. 1CYP Ch. 18.2 - Describe the function of the extraembryonic...

The reproductive system of the human body has a role in producing gametes (sperm and egg cells) for producing a new individual. This is called as a process of fertilization.

Videos

Introduction:

The reproductive system of the human body has a role in producing gametes (sperm and egg cells) for producing a new individual. This is called as a process of fertilization.

Answer to Problem 1A

Explanation of Solution

Want to see more full solutions like this?

Chapter 18 Solutions

The reproductive system of the human body has a role in producing gametes (sperm and egg cells) for producing a new individual. This is called as a process of fertilization.

Videos

Introduction: The reproductive system of the human body has a role in producing gametes (sperm and egg cells) for producing a new individual. This is called as a process of fertilization.

Answer to Problem 1A

Explanation of Solution

Want to see more full solutions like this?

Chapter 18 Solutions

Introduction:

The reproductive system of the human body has a role in producing gametes (sperm and egg cells) for producing a new individual. This is called as a process of fertilization.