Fertilization Steps Flashcards
1
Q
- After _ hours, sperm meets egg
A
17
2
Q
- Tip of sperm, aka _ , makes contact with egg
A
Acrosome
3
Q
- Egg’s coat _
A
Breaks down
4
Q
- Sperm’s tip ruptures and releases enzymes that break through _
A
Zona pellucida (egg’s coat)
5
Q
- After breaking through zona pellucida, sperm reaches _
A
Outer membrane of egg
6
Q
- At outer membrane, sperm bind to protein receptors that _
A
Recognize it as a sex cell
7
Q
Sperm head carries _
A
Proteins
8
Q
- Outer membrane of sperm and egg fuse together so _
A
Contents can mingle
9
Q
- Sperm nucleus enters cytoplasm of egg and eventually fuses with egg nucleus, creating
A
The cell into a diploid zygote
10
Q
- Once sex cells have converted, _ fuse with outer membrane
A
Granules in eggs cytoplasm
11
Q
When granules on eggs cytoplasm fuse with outer membrane it changes _
A
It’s outer receptors
12
Q
After zygote formed, granules fuse with membrane, blocking _
A
Entry to other sperm
