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Vertebrate Eggs and Sperm Cells Structure

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Vertebrate Eggs and Sperm Cells Structure

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Questions and Answers

What is the primary role of the acrosome in sperm cells?

To protect the sperm during capacitation

To aid in fertilization by releasing enzymes (correct)

To provide energy for locomotion

To contain the genetic material

What is the purpose of capacitation in mammalian fertilization?

To initiate the fusion of male and female pronuclei

To complete meiosis in the egg

To activate the sperm's acrosome enzymes (correct)

To prevent polyspermy in the egg

Which of the following is NOT a component of the RHINO fertilization process?

Entry of the sperm cell into the egg

Completion of meiosis by the sperm (correct)

Initial membrane contact between egg and sperm

Prevention of polyspermy by the egg

What is the primary function of the mitochondria in the middle piece of a sperm cell?

To generate energy for the sperm's locomotion (C) Signup and view all the answers

In frog fertilization, what is the role of the lampbrush chromosome?

To synthesize ribosomes for the developing embryo (D) Signup and view all the answers

What is the primary role of the zona pellucida in mammalian fertilization?

To prevent polyspermy in the egg (B) Signup and view all the answers

What method of fertilization is employed by frogs during amplexus?

External fertilization (D) Signup and view all the answers

What is the male copulatory organ in reptiles called?

Cloaca (C) Signup and view all the answers

What is the function of a spermatophore in fertilization?

To anchor the male within the female (A) Signup and view all the answers

Which part of the sperm cell usually has folds, papillae, or spines in reptiles?

Acrosome (A) Signup and view all the answers

What is the term for the fertilization method where egg cell reaches the outside environment surrounded by an egg shell?

Internal fertilization (D) Signup and view all the answers

What is the typical copulation behavior witnessed in most birds?

'Cloacal kiss' (C) Signup and view all the answers

What is the definition of fertilization?

The fusion of a haploid egg and a haploid sperm to form a diploid zygote. (A) Signup and view all the answers

Which of the following is a characteristic of external fertilization?

The fertilized eggs sink to the bottom and lie with the substrate. (D) Signup and view all the answers

What is the role of capacitation in mammalian fertilization?

It triggers the acrosome reaction in the sperm to release digestive enzymes. (C) Signup and view all the answers

What is the structure of a sperm cell?

It has a head, a tail, and a midpiece containing the mitochondria. (A) Signup and view all the answers

How does fertilization occur in frogs?

The male and female release their gametes into the water, where external fertilization occurs. (A) Signup and view all the answers