Questions and Answers
What do sperm cells have that enables them to swim?
a tail
What carries genetic information from the male parent in sperm cells?
the head of the sperm
What is the size difference between sperm and egg cells?
Egg cells are much bigger than sperm cells.
Egg cells contain an energy store.
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Which parent contributes genes found in the egg cell?
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The actual size of a sperm cell measuring 20 mm at x2000 magnification is ___ mm.
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What is the actual diameter of an egg cell?
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Study Notes
Sperm and Egg Cells
- Sperm cells feature a tail that aids in swimming, allowing them to reach egg cells.
- The head of a sperm carries the genetic information from the male, housed in the sperm nucleus.
- Egg cells are significantly larger than sperm cells, providing a greater energy store due to yolk content.
- Genetic information from the mother is contained within the nucleus of the egg.
Comparing Sperm and Egg Cells
- Sperm cells are small, possess a tail, and lack an energy store.
- Egg cells are large, do not have a tail, but do contain an energy store of yolk.
- Genetic contributions vary: sperm cells carry genes from the father, and egg cells carry genes from the mother.
Magnification and Size Calculation
- Sperm cells can be observed under a microscope at a magnification of x2000.
- Egg cells have a magnification factor of x180.
- Actual size of cells can be determined using the formula:
- Actual size = Image size / Magnification
- For example, if a sperm cell measures 20 mm under magnification by x500, the actual size is calculated as 20 mm / 500 = 0.04 mm.
- The actual diameter of an egg cell is 0.1 mm; magnification can be derived by dividing the drawing diameter by actual size.
Specialization of Cells
- Cells undergo structural and shape transformations during development to perform specific functions.
- Specialized cells, such as ciliated cells, possess unique structures (like cilia) to execute their roles effectively, e.g., moving mucus in the respiratory system.
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Description
This quiz covers the fundamental differences between sperm and egg cells, focusing on their structure and function. Learn about the unique adaptations of sperm for swimming and the energy storage in egg cells. Test your understanding of these essential reproductive cells.
