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S2 DNA & Fertilisation Revision > Test Revision Cards > Flashcards

Test Revision Cards Flashcards

Revise for the DNA & Fertilisation Test

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Biology 101 flashcards
1
Q

What does “Sexual Reproduction” mean?

A

Two parents are involved

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2
Q

What does “Asexual Reproduction” mean?

A

only one parent

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2
Q

What do we call the specialised sex cells?

A

GAMETES - Sperm cell (male) and Egg (female)

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3
Q

How many chromosomes does the male sex cell (“gamete”) contain?

A

23

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4
Q

How many chromosomes does the female sex cell (“gamete”) contain?

A

23

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5
Q

Name the parts of the male reproductive system

A
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6
Q

Name the parts of the female reproductive system.

A
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7
Q

Name the part of the female reproductive system which produces the female gametes

A

Ovary

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8
Q

Name the part of the male reproductive system which produces the male gametes

A

Testes

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9
Q

What happens, in terms of gametes, when fertilisation takes place

A

nucleus of the Sperm (male gamete) fuses with the nucleus of the Egg (female gamete)

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10
Q

What do we call the FERTILISED egg?

A

ZYGOTE

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11
Q

What do we call the process of cell division to produce an embryo and then a foetus?

A

MITOSIS

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12
Q

Where is the female reproductive system does the foetus develop?

A

UTERUS

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13
Q

Name the tube which connects the foetus to the placenta.

A

UMBILICAL CORD

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14
Q

Name the bag of fluid which protects the foetus.

A

AMNIOTIC SAC

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15
Q

Where in the cell are Chromosomes found?

A

Nucleus

16
Q

Name the smaller material that the chromosomes are made up of

A

DNA

17
Q

How many chromosomes do humans have?

How many come from each parent?

A

46

23 from each parent

18
Q

What is meant by the word Genes?

A

Sections of chromosomes which control certain characteristics.

19
Q

Some of our characteristics come from our genetics (inherited characteristics) and some come from the ___________. Some characteristics come from a mixture of both!

A

Environment

20
Q

Give two uses for DNA profiling

A
  1. crime investigation
  2. paternity testing
21
Q

Give one advantage of a national DNA database

A

Crimes solved quickly and easily

22
Q

Give one disadvantage of a national DNA database

A

Invasion of privacy

S2 DNA & Fertilisation Revision (1 decks)

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