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Science > Sexual Reproduction II > Flashcards

Sexual Reproduction II Flashcards

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1
Q

Fertilisation is the process where sperm fuses with the the egg to form a zygote. True or false?

A

False. The sperm do not fuse with the egg, only the nucleus of the sperm fuse with the egg.

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2
Q

What is the average duration of pregnancy in humans?

A

9 months.

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3
Q

Which of the following sex hormone triggers puberty in males?

A

Testosterone.

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4
Q

Which of the following physical changes occur in both male and female bodies during puberty?

A
  • Growth spurt

- Hair starts growing in the pubic region.

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5
Q

How many days on average is the menstrual cycle?

A

28 days.

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6
Q

Which period of the menstrual cycle is the fertile phase?

A

Day 11 to 16.

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7
Q

Which period of the menstrual cycle is the ovulation phase?

A

Day 14.

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8
Q

What is the definition of ovulation?

A

It is the release of an mature egg from the ovary.

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9
Q

What is the definition of menstruation?

A

It is the discharge of uterus lining together with blood when an egg remains unfertilised.

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10
Q

Which period of the menstural cycle is the non fertile phase?

A

Day 19 to 28.

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11
Q

Which period of the menstrual cycle is the menstruations phase?

A

Day 1 to 5. It is not fertile during that period too.

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12
Q

Which period of the menstural cycle is the repair and growth of uterus lining happening?

A

It is from day 6 to 10.

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13
Q

What is the definition of fertilisation?

A

It is the process where the nucleus of the sperm fuses with the nucleus of the egg to form a zygote.

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14
Q

What is the process of pregnancy?

A

Zygote-> Embryo-> Foetus-> Baby

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15
Q

What is the passage where the baby is born?

A

Vagina.

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16
Q

What is the definition of “Heredity”?

A

It is the transfer of characteristics from parents to offspring through their genes.

17
Q

What is the definition of puberty?

A

It is a period where rapid growth and development, during which a person changes to become sexually matured and capable of reproducing.

18
Q

What causes puberty to happen?

A

Sex hormones.

19
Q

When does puberty occur for boys?

A

Ages 12 to 14

20
Q

When does puberty occur for females?

A

Ages 10-12

21
Q

What hormone causes the lining of uterus to repair and thicken?

A

Oestrogen.

22
Q

What is the hormones responsible for the continuous swelling of uterine lining for implantation?

A

Progesterone.

23
Q

Will the lining of the uterus remain the same when a woman is pregnant?

A

Yes

24
Q

Does the lining of the uterus shed if the woman is pregnant?

A

No it does not. It will only shed if the woman is not pregnant.

25
Q

What causes mensturation to start again?

A

It is the rise of the oestrogen level and progesterone level that causes it.

26
Q

Why does the uterine lining remain thick when a woman is pregnant?

A

It remains thick to supply the embryo with nutrients and oxygen.

27
Q

Is the word contraceptive and Birth control the same?

A

Yes. Contraceptives or Contraception = Birth Controls

28
Q

What are the prescription caused by gonorhoea?

A

Blindness in babies,

29
Q

what are 2 bacteria-caused STI’s that can be treated?

A

gonorhoea and syphilis

30
Q

What are the symptoms for AIDs?

A

Loss of appetite, night sweat, prolonged fever and swollen glands.

31
Q

What are the symptoms of syphilis?

A

Sores on mouth, genitals, throat. heart failure, non-itchy rashes and hair loss.

32
Q

What are the symptoms of Gonorhoea?

A

1) A yellow or greenish discharge from the penis.

2) A yellow or greenish color of vaginal discharge developed with a strong smell.

33
Q

What is the prescription for Syphilis?

A

Painless sores and non-itchy rashes.

34
Q

What is the prescription for AIDS?

A

Destroys the body’s immune system. Body vulnerable to diseases etc.

35
Q

Is AIDs a disease?

A

No it is not. It is a term to describe the most serious stage of HIV infections.

36
Q

Why is Abortion a controversial matter?

A

It is because it involves human morality.

37
Q

How does fertilised egg move to the uterus?

A

The muscular contractions of the wall of the oviduct. The sweeping motions of the cilla continue to move zygote towards the uterus.

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