Cellular Basis of Life 2 Flashcards
Where are the enzymes located in a sperm cell?
At the front.
What do enzymes help a sperm cell do?
It helps it find and penetrate the ovum.
Does a sperm cell have a nucleus?
Yes
Why does a sperm cell have a nucleus?
So it can combine half its DNA with the DNA in the ovum.
What is a boy’s hormone during puberty called?
Testosterone
What is a girl’s hormone during puberty called?
Oestrogen
Is the reproductive system functional before puberty?
No
Are mood swings a result of puberty?
Yes
Which gender’s voice deepens as a result of puberty?
Boys
What is the average length of the menstrual cycle?
28 Days
What happens at the end of the menstrual cycle if the ovum isn’t impregnated?
Period
Where does the ova develop/grow?
Ovary
What tube do sperm leave the body through?
Urethra
What is semen?
Sperm + Fluid
What is the purpose of the scrotum and hoes it achieve this?
It keeps the testicles cool by holding them outside the body.