Slow Block to Polyspermy

Froggy Jumps

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Preventing multiple sperm entry

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Ava BENNETT

Australia

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Froggy Jumps Slow Block to PolyspermyVersión en línea Preventing multiple sperm entry por Ava BENNETT 1 What is the slow block to polyspermy primarily? a Membrane depolarization of the oocyte b DNA repair after fertilization c Cortical granule reaction hardening the zona pellucida 2 Which structure is modified by the slow block to polyspermy? a Zona pellucida b Nucleus c Plasma membrane 3 Which cellular event triggers the slow block? a Sperm binding to the oocyte membrane b Mitochondrial replication c Calcium wave triggering cortical granule exocytosis 4 What happens to the zona pellucida during the slow block? a It becomes permeable to ions b It hardens to prevent sperm entry c It dissolves to allow more sperm 5 Which organelle releases contents during the slow block? a Golgi apparatus b Lysosomes c Cortical granules 6 The slow block to polyspermy occurs after which event? a Sperm–egg membrane fusion b DNA replication before meiosis c Polyspermy completion 7 Which ion surge is closely associated with initiating the slow block? a Calcium influx b Potassium efflux c Sodium influx 8 What is the purpose of the cortical granule reaction? a To trigger embryo cleavage b To activate paternal gene expression c To modify the zona pellucida and block additional sperm 9 Which timing best describes the slow block to polyspermy? a Seconds to minutes after fertilization b Before fertilization c Hours after fertilization 10 Which of the following best summarizes the slow block? a Fast electrical depolarization blocks sperm b Cortical granules alter the zona pellucida to prevent polyspermy c Zona pellucida is lysed to release sperm

Froggy Jumps

Slow Block to PolyspermyVersión en línea

Preventing multiple sperm entry

por Ava BENNETT

What is the slow block to polyspermy primarily?

Membrane depolarization of the oocyte

DNA repair after fertilization

Cortical granule reaction hardening the zona pellucida

Which structure is modified by the slow block to polyspermy?

Zona pellucida

Nucleus

Plasma membrane

Which cellular event triggers the slow block?

Sperm binding to the oocyte membrane

Mitochondrial replication

Calcium wave triggering cortical granule exocytosis

What happens to the zona pellucida during the slow block?

It becomes permeable to ions

It hardens to prevent sperm entry

It dissolves to allow more sperm

Which organelle releases contents during the slow block?

Golgi apparatus

Lysosomes

Cortical granules

The slow block to polyspermy occurs after which event?

Sperm–egg membrane fusion

DNA replication before meiosis

Polyspermy completion

Which ion surge is closely associated with initiating the slow block?

Calcium influx

Potassium efflux

Sodium influx

What is the purpose of the cortical granule reaction?

To trigger embryo cleavage

To activate paternal gene expression

To modify the zona pellucida and block additional sperm

Which timing best describes the slow block to polyspermy?

Seconds to minutes after fertilization

Before fertilization

Hours after fertilization

Which of the following best summarizes the slow block?

Fast electrical depolarization blocks sperm

Cortical granules alter the zona pellucida to prevent polyspermy

Zona pellucida is lysed to release sperm

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Slow Block to Polyspermy

Froggy Jumps

Sobre esta actividad

Creada por

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Slow Block to PolyspermyVersión en línea

por Ava BENNETT

What is the slow block to polyspermy primarily?

Which structure is modified by the slow block to polyspermy?

Which cellular event triggers the slow block?

What happens to the zona pellucida during the slow block?

Which organelle releases contents during the slow block?

The slow block to polyspermy occurs after which event?

Which ion surge is closely associated with initiating the slow block?

What is the purpose of the cortical granule reaction?

Which timing best describes the slow block to polyspermy?

Which of the following best summarizes the slow block?

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