Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Science June Exam Sec 2 > Fertilization, Gametes, Pregnancy > Flashcards

Fertilization, Gametes, Pregnancy Flashcards

You may prefer our related Brainscape-certified flashcards:
Biology 101 flashcards
1
Q

What is a gamete? Give two examples

A

A cell for the purpose of reproduction such as an ovum and a spermatozoon

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

When do women produce ovum and when do they stop?

A

Women produce ovum at puberty until middle age, female reproductive organs prepare for pregnancy every month

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

When do men produce spermatozoa and when do they stop?

A

Men start to produce spermatozoa at puberty and continue for the rest of their lives

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What does ovum and spermatozoa carry?

A

Ovum carries half the mother’s genetic information and spermatozoa carries half the father’s genetic information

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is fertilization?

A

The union of two gametes (an ovum and a spermatozoon)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is ovulation?

A

Every month one ovum is released fro, the overt towards a Fallopian tube

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

How is an ovum fertilized and what happens if it isn’t?

A

The ovum is fertilized if it meets a spermatozoon in a Fallopian tube, if not the female body will menstruated it 14 days later

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

How are fraternal twins produced?

A

A women produces two ova and both are fertilized

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

How are identical twins produced?

A

One ovum is fertilized and splits in two

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

When can an ovum be fertilized?

A

During her fertile period which lasts four days before ovulation to the day after ovulation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

How long can ovum live? How long can spermatozoon live? How does this affect her fertile period?

A

Ovum can stay alive for 24 hours and spermatozoa can live for three to five days. Therefore a women’s fertile period lasts four days before ovulation to the day after ovulation.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is menstruation?

A

When an unfertilized ovum is menstruated through blood flow

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

When does ovulation always occur?

A

14 days before the first day of menstruation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

How much sperm does a man release in his semen?

A

A man releases millions of spermatozoa in his semen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What happens to other sperm after an ovum has been penetrated?

A

Once a spermatozoon penetrates the ovum, no other sperm can enter because the ovum is fertilized

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

How many spermatozoa reach the ovum?

A

One

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What is pregnancy?

A

The time when a women carries an embryo, then a fetus in her uterus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

When does pregnancy begin?

A

When a fertilized ovum is carried towards the uterus by millions of tiny hairs that mine the walls of the Fallopian tubes

19
Q

What is a zygote?

A

An ovum that has been fertilized by a spermatozoon

20
Q

What happens to a zygote on the first four days of fertilization?

A

It travels through the Fallopian tube to the uterus where it starts dividing to form a bundle of cells

21
Q

What is implantation? How does this affect the zygote’s name?

A

When the zygote starts dividing, it’s cells attach to the endometrium and start to build a home. The zygote is now known as an embryo

22
Q

How is the embryo connected to the placenta?

A

By the umbilical cord

23
Q

What does the placenta allow the exchange and transfer of?

A

It allows for the exchange of respiratory gases such as oxygen and carbon dioxide and the transfer of nutrients & removal of waste

24
Q

What is the embryo surrounded by and why?

A

It is surrounded by the amniotic save which is filled with amniotic fluid to protect it

25
Q

When is the embryo known as a fetus?

A

After 8 weeks of pregnancy

26
Q

What has formed at around 8 weeks of pregnancy

A

Most of the embryo’s organs

27
Q

Fill in the blanks
The menstrual cry le is a series of events that mainly affects the ____________, the endometrium and the ____________. Unless a woman is pregnant, this cycle repeats regularly from _____________ to menopause.

A

Vagina, ovaries, pregnant, puberty

28
Q

True or false?

Spermatozoa can survive up to five days in the uterus and Fallopian tubes?

A

True

29
Q

True or false?

Fertilization occurs in the uterus

A

False

It occurs in the Fallopian tubes

30
Q

Who am I?

I am the time when an ovum is released by an ovary

A

Ovulation

31
Q

What is an umbilical cord?

A

It connects the placenta to the embryo

32
Q

What is amniotic fluid?

A

It provides protection against outside impacts

33
Q

What is the placenta?

A

It allows food, gas and waste to be exchanged

34
Q

What is the amniotic sac?

A

A membrane that holds the embryo and the amniotic fluid

35
Q

What is the Fallopian tube?

A

The place where fertilization occurs

36
Q

What is the endometrium?

A

A membrane that mines the interior if the uterus. It has many blood vessels

37
Q

Match the stage of pregnancy with its description

a) zygote 1) the future child grows and gains mass
b) embryo 2) characterized by cellular division
c) fetus 3) most of the organs are formed

A

a) –> 2
b) –> 1
c) –> 3

38
Q

True or false?

Each gamete contains all the individual’s genetic information?

A

False

Sache gamete contains half

39
Q

Which organs produce gametes?

a) male
b) female

A

a) testicles

b) ovaries

40
Q

Who am I?

I always happen 14 days before the first day of menstruation

A

Ovulation

41
Q

14, before, ovum, ovary

A

Fill in the blanks
Ovulation always happens _______ days ____________ ovulation. During that time, an __________ is released from an ____________

42
Q

True or false?

Two spermatozoa can fertilize the same ovum

A

False

Only one spermatozoon can fertilize an ovum

43
Q

True or false?

A woman is fertile at the beginning of her menstrual cycle?

A

False

She is fertile 4 days before and one day after ovulation

44
Q

Fill in the blanks
An ovum lives for _______ hours, while a _______________ can
live from 3 to 5 days. This means a woman’s _____________ period lasts from four days before ______________ to the day after it happens.

A

24, spermatozoa, fertile, ovulation

Science June Exam Sec 2 (21 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions