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Biology > EOY Y7 Revision biology > Flashcards

EOY Y7 Revision biology Flashcards

1
Q

What is the role for alveoli

A

To carry out gas exchange

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2
Q

where does respiration take place

A

Mitochondria

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3
Q

What is the length of the menstrual cycle

A

28 days

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4
Q

what is the placenta

A

where the oxygen and nurtrience for the foetus is

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5
Q

What is the umbilical cord

A

The cord that carries the oxygen and nutrience from the placenta to the developing foetus

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6
Q

What connects bones to bones in a joint

A

Ligaments

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7
Q

What connects muscles to bones in a joint

A

tendons

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8
Q

What is the thing on the end of a bone to reduce friction

A

articular cartilage

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9
Q

What stops the articular cartilage from rubbing and wearing away

A

Synovial fluid

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10
Q

Name 3 types of joints

A

Hinge, pivot, ball and socket

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11
Q

What holds up the anther

A

the filament

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12
Q

What produces pollen

A

the anther

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13
Q

What is the male gamete of a plant

A

the anther

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14
Q

What is the female gamete of a plant

A

stigma

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15
Q

What is the female gamete of a human

A

egg cell

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16
Q

what is the male gamete of a human

A

sperm cell

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17
Q

Why do wind pollinated plants have lots of pollen

A

to increase the change of fertilisation

18
Q

Why do insect pollinated plants have vibrant petals and nectar

A

To attract pollinators

19
Q

What is the condition where the end of bones become inflamed because of friction

A

Arthritis

20
Q

What is the cause of puberty

A

Hormones

21
Q

What are antagonistic muscles

A

A pair of muscles that do the opposite to work together

22
Q

What is a flagellum

A

A tail like thing for movement

23
Q

How do we inhale

A

The diaphragm flattens increasing the lung volume reducing the pressure and allowing air in

24
Q

How do we exhale

A

The diaphragm contracts reducing the lung volume increasing the pressure and forcing gas out of the body

25
Q

What is respiration

A

The process in which gas is exchanged in the alveolus with oxygen entering the red blood cells and carbon dioxide leaving the lungs and out the body

26
Q

Where dies photosynthesis take place

A

Chloroplast

27
Q

What controls what leaves and enters a cell

A

The cell membrane

28
Q

What is the most outer layer of a animal cell

A

Cell membrane

29
Q

What is the most outer layer of the plant cell

A

Cell wall

30
Q

What is diffusion

A

When particles move from an area of low concentration to an area of low concentration

31
Q

What is the job of the vacuole

A

to store cell sap

32
Q

What is the job of the nucleus

A

To store the dna

33
Q

What is the job of the ribysomes

A

To create amino acids used for protein

34
Q

What is the job of the cytoplasm

A

Carry out chemical reactions

35
Q

What is the role of the Stigma

A

To grab the pollen from pollenation

36
Q

What tube does the pollen go down too reach the ovule and ovary

A

Style

37
Q

What are the leaves on the stem called

A

Sepals

38
Q

How many sperm cells complete fertilisation

A

1

39
Q

How many sperm cells are released in ejaculation

A

Millions

40
Q

Why do sperm cells have flagellums

A

To swim towards the egg cell

41
Q

What are the stems of the alveolus called

A

bronchioles

42
Q

What is the sweet substance in plants that pollinators are attracted to

A

nectar

Biology (1 decks)

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