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Biology > Gametes and Fertilisation > Flashcards

Gametes and Fertilisation Flashcards

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1
Q

What is the male gamete

A

Sperm

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2
Q

What is the female gamete

A

Egg

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3
Q

Where is the DNA stored in a sperm

A

Nucleus

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4
Q

Name 2 adaptations that a sperm has for carrying out its job

A

A tail
Enzymes in its head
Streamlined shape

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5
Q

Why does a sperm have tail

A

To help it swim towards the egg cell

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6
Q

What enables the sperm to penetrate through the egg and where in the sperm are they found

A

Enzymes allow the spermicide to penetrate through the egg and are found in the sperms head

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7
Q

How does a streamlined shape help a sperm

A

It allows it to move more efficiently

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8
Q

Name a adaptation the egg cell has for carrying out its job

A

Large amount of cytoplasm

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9
Q

Why does a egg cell store so much cytoplasm

A

It provides nutrients for a developing embryo

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10
Q

What does the nucleus in an egg cell contain

A

Chromosomes

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11
Q

What in an egg cell surrounds the cytoplasm

A

The productive outer layer

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12
Q

How many chrono does a sperm carry

A

23

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13
Q

How many chromosomes will a zygote have

A

46

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14
Q

What is ovulation

A

When one ovary releases an egg roughly every 28 days

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15
Q

Where does fertilisation take place

A

In the oviduct

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16
Q

What is fertilisation

A

During sexual intercource millions of sperm are ejected into the vagina.These sperm will swim up the vagina through the cervix into the uterus and down the oviduct.If the sperm meets and egg the twos nucleus will join and create a zygote

17
Q

What happens a zygote as it travels down the oviduct

A

It begins to divide and divide forming a ball of cells

18
Q

What happens to the ball of cells when in reaches the uterus

A

It will sink into the lining of the uterus this is called implantation and now the mother is pregnant

19
Q

What will the ball of cells continue to grow into to

A

A foetus and remain being called this until it is born

Biology (10 decks)

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