Biology: Fertilization Process

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What is the primary function of the acrosomal reaction during fertilization?

To release enzymes that penetrate the corona radiata and zona pellucida (correct)

To stimulate the capacitation of sperm

To facilitate the fusion of sperm and oocyte nuclei

To prevent the penetration of multiple sperm into the oocyte

What is the term for the process by which a sperm penetrates the corona radiata and zona pellucida to reach the oocyte's plasma membrane?

Fertilization

Acrosomal reaction

Capacitation

Penetration (correct)

What is the primary function of the zona pellucida?

To facilitate the capacitation of sperm

To facilitate the fusion of sperm and oocyte nuclei

To provide a barrier against the penetration of multiple sperm (correct)

To nourish the oocyte during fertilization

What is the term for the stage of development during which the fertilized oocyte undergoes several cell divisions without significant growth?

Pre-embryonic stage Signup and view all the answers

What is the primary function of the placenta during embryonic development?

To provide nourishment to the embryo Signup and view all the answers

What is the term for the layer of cells that surrounds the embryo and provides protection and nourishment?

Amnion Signup and view all the answers

What is the primary function of the yolk sac during embryonic development?

To provide nourishment to the embryo Signup and view all the answers

What is the term for the process by which the embryonic cells undergo a series of complex transformations to form the three primary germ layers?

Embryogenesis Signup and view all the answers

What is the term for the stage of development during which the embryo undergoes rapid growth and differentiation?

Embryonic stage Signup and view all the answers

What is the term for the abnormal implantation of the blastocyst in a location outside of the uterus?

Ectopic pregnancy Signup and view all the answers

Which of the following substances require active transport across the placenta?

Amino acids and iron Signup and view all the answers

When does sexual differentiation typically begin?

Weeks 9-12 Signup and view all the answers

What is the function of relaxin during pregnancy?

Loosens the pelvis and dilates the cervix Signup and view all the answers

What causes an increase in appetite during pregnancy?

Increased production of thyroid hormone Signup and view all the answers

What is the probable cause of nausea and vomiting during early pregnancy?

Increased levels of progesterone Signup and view all the answers

What is the term for the plug of mucus that covers the cervix and is expelled along with a small amount of blood before labor?

Bloody show Signup and view all the answers

What is the primary function of prolactin in lactation?

Establishing and maintaining the supply of breast milk Signup and view all the answers

What is the term for the mixing of alleles in a heterozygous individual?

Codominance Signup and view all the answers

What occurs in the heart after birth to adjust to extrauterine life?

The foramen ovale closes Signup and view all the answers

What is the primary purpose of colostrum production in the first 72 hours after birth?

To provide passive immunity to the infant Signup and view all the answers

What is the term for someone who carries a recessive gene that can be passed on?

Carrier Signup and view all the answers

What occurs to the uterus after childbirth?

It reduces to its pre-pregnancy size Signup and view all the answers

Biology: Fertilization Process

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Questions and Answers

What is the primary function of the acrosomal reaction during fertilization?

What is the term for the process by which a sperm penetrates the corona radiata and zona pellucida to reach the oocyte's plasma membrane?

What is the primary function of the zona pellucida?

What is the term for the stage of development during which the fertilized oocyte undergoes several cell divisions without significant growth?

What is the primary function of the placenta during embryonic development?

What is the term for the layer of cells that surrounds the embryo and provides protection and nourishment?

What is the primary function of the yolk sac during embryonic development?

What is the term for the process by which the embryonic cells undergo a series of complex transformations to form the three primary germ layers?

What is the term for the stage of development during which the embryo undergoes rapid growth and differentiation?

What is the term for the abnormal implantation of the blastocyst in a location outside of the uterus?

Which of the following substances require active transport across the placenta?

When does sexual differentiation typically begin?

What is the function of relaxin during pregnancy?

What causes an increase in appetite during pregnancy?

What is the probable cause of nausea and vomiting during early pregnancy?

What is the term for the plug of mucus that covers the cervix and is expelled along with a small amount of blood before labor?

What is the primary function of prolactin in lactation?

What is the term for the mixing of alleles in a heterozygous individual?

What occurs in the heart after birth to adjust to extrauterine life?

What is the primary purpose of colostrum production in the first 72 hours after birth?

What is the term for someone who carries a recessive gene that can be passed on?

What occurs to the uterus after childbirth?

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