3.4 compare the structure of ovum and sperm
Sperm cell
structure - head - acrosome and nucleus
- middle - mitochondria
- tail - axial filament
Mobility - swims by lashing movement of filament
Nucleus - 23 (haploid) highly condensed DNA
Energy Store - very little most energy provided by fructose from seminal vesicle
Acrosome - present - contains enzymes to digest pathway to oocyte
Mitochondria - arranged spirally around axial filament to provide energy for swimming
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Egg cell
structure - sperical cell surrounded by zona pellucida and follicle cells
Mobility - very limited mobility; moves by action of cilia in oviduct
Nucleus - 23 (haploid)
Energy Store - lipid droplets on cytoplasm
Acrosome - absent
Mitochondria - many mitochondria to provide energy for development of embryo after fertilization
