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Questions and Answers
What is the function of the acrosome in a mature sperm cell?
What is the function of the acrosome in a mature sperm cell?
- Provide energy (ATP) to move the tail
- Contain the haploid nucleus with 23 chromosomes
- Supply vital proteins to the cell
- Contain enzymes that help the sperm penetrate the egg (correct)
Which component of the mature ovum provides a protective thick membrane layer to seal the ovum against multiple fertilizations?
Which component of the mature ovum provides a protective thick membrane layer to seal the ovum against multiple fertilizations?
- 1st polar body
- Nucleus
- Corona radiata
- Zona pellucida (correct)
What is the main function of the mid piece in a mature sperm cell?
What is the main function of the mid piece in a mature sperm cell?
- Contains the haploid nucleus with 23 chromosomes
- Provide energy (ATP) to move the tail (correct)
- Contain enzymes that help the sperm penetrate the egg
- Wavelike motion of the flagellum propels the sperm forward
What is the size of a mature human egg cell?
What is the size of a mature human egg cell?
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Where does fertilization of the egg typically occur?
Where does fertilization of the egg typically occur?
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Study Notes
Sperm Cell Structure and Function
- The acrosome in a mature sperm cell functions to release enzymes that break down the outer layer of the egg, facilitating fertilization.
Ovum Structure and Function
- The zona pellucida, a component of the mature ovum, provides a protective thick membrane layer that seals the ovum against multiple fertilizations.
Sperm Cell Structure and Function
- The midpiece in a mature sperm cell is responsible for generating energy for the sperm's motility through its high concentration of mitochondria.
Ovum Size and Fertilization
- A mature human egg cell is approximately 0.12-0.15 mm in diameter.
- Fertilization of the egg typically occurs in the fallopian tube, also known as the oviduct.
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Description
Test your knowledge on the components of a mature ovum, including the corona radiata, zona pellucida, nucleus, and the 1st polar body. Understanding these components is crucial in embryology.
