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Year 8 Science Bahmed > Flat 32 > Flashcards

Flat 32 Flashcards

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Biology 101 flashcards
1
Q

What is the Aerobic respiration equation?

A

Glucose + Oxygen = Energy+water+carbon dioxide

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2
Q

What is the Anerobic resperation equation?

A

Glucose=Energy+Lactic acid

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3
Q

What is the equation for photosynthesis

A

Carbon Dioxide+Water+sunlight=Glucose+Oxygen

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4
Q

What is in the plant cell?

A

-Mitochondria
-Nucleus
-Cell wall
- Ribosomes
-Vacoule
-Cytoplasm
-Cytoplasts
-Cell Membrane

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5
Q

What is in the animal cell?

A

-Nucleus
-Cytoplasm
-Cell Membrane
-Mitochondria
-Ribosomes

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6
Q

Function of mitochondria?

A

site of Resperation

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7
Q

Function of Cytoplasm

A

Allows chemical reactions to happen in the cell.

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8
Q

Function of the Nucleus

A

Contains DNA controlling what the cell does

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9
Q

Function of the Ribosomes

A

Allows protein synthesis to occur

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10
Q

Function of the Cell Membrane

A

Controls what enters and leaves the cell

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11
Q

Function of Cell wall

A

Supports plant cell

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12
Q

Function of Chloroplast

A

Contains chloroplast to absorb sunlight for photosynthesis to occur

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13
Q

Function of the Vacoule

A

Supports the cell

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14
Q

What is thermal decomposition?

A

When a compound gets broken down by heat

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14
Q
A
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14
Q

Metal+Acid

A

Salt+Hydrogen

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14
Q

Metal+oxygen

A

Metal oxide

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15
Q

What are the properties of a solid?

A

-Packed together
-Strong bonds between particles
-Regularly arranged

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16
Q

What are the properties of a liquid?

A

-Highly packed together
-Not regularly arranged
-Strong bonds between particles

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17
Q

What are the properties of a gas?

A

-Very far apart
-Weak bonds between particles
-Not regularly arranged

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18
Q

Solid->Liquid

A

Melting

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19
Q

Liquid->Solid

A

Freezing

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20
Q

Liquid->Gas

A

Evaporation

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21
Q

Gas->Liquid

A

Condensation

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22
Q

Solid->Gas

A

Sublimation

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23
Q

What is stage 1 of the menstrual cycle and when is it?

A

Egg produced
day 1-12

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24
Q

What is stage 2 of the menstrual cycle and when is it?

A

Egg travels down fallopian tube
days 12-19

25
Q

What is stage 3 of the menstrual cycle and when is it?

A

Blood lining and uterus thickens
days 19-20

26
Q

What is stage 4 of the menstrual cycle and when is it?

A

Blood lining will be shed
20-29

27
Q

What are the plant sex cells?

A

Pollen and ovule.

28
Q

What is stage 1 of reproduction in plants?

A

Pollen released from anther.

29
Q

What is stage 2 of reproduction in plants?

A

Pollen lands on stigma of another plant

30
Q

What is stage 3 of reproduction in plants?

A

Pollen is moved down pollen tube and lands in ovule.

31
Q

What is stage 4 of reproduction in plants?

A

Egg fertilised and seed produced by pollen.

32
Q

What is the Fallopian tube?

A

Site of fertilisation and where egg travels down.

33
Q

What are the ovaries?

A

Produces egg cells and oestrogen.

34
Q

What is the uterus?

A

Where a baby grows and develops.

35
Q

What is the cervix?

A

Where sperm enters.

36
Q

What is the purpose of the Placenta

A

Transports necessary nutrients and products from the mother’s blood to the fetus. It also transports hormones from mother’s blood.

37
Q

What is the conservation of energy?

A

Energy cannot be destroyed but only transformed into another form/

38
Q

What is useful energy?

A

Energy that is useful for the machine that you are using such as this device. The usefull energy is the light.

39
Q

What is the unit of energy?

A

Joules

40
Q

How to calculate efficiency

A

Total useful energy
____________________ X100
Total output energy

41
Q

What are fossil fuels?

A

Naturally found fuels that can be burned to produce energy
e.g. coal

42
Q

What is produced by burning fossil fuels?

A

Carbon Dioxide

43
Q

Why is carbon dioxide bad for the enviroment?

A

Greenhouse gas is released which is trapped in the atmosphere, which contributes to climate change.

44
Q

What is a renewable energy source?

A

An energy source that doesn’t run out

45
Q

How can wave produce energy?

A

Waves have gravitational energy which is transferred to kinetic energy when it moves. Kinetic energy is used to move a turbine, generating electrical energy.

46
Q

How can Biomass produce energy

A

Trees can be burnt to produce thermal energy which is then transferred to kinetic energy to push a turbine makeing electrical energy.

47
Q

How can wind produce energy?

A

Wind contains kinetic energy which moves turbines and transfers to electrical energy.

48
Q

How can solar panels produce energy?

A

They take in light and heat energy from the sun and transfer to electrical energy.

49
Q

How can nuclear energy produce energy?

A

Nuclear energy goes to heat energy which can turn a turbine.

50
Q

What is the speed equation?

A

Distance
_________
Time

51
Q

What is the unit for speed?

A

Meters per second

52
Q

What is the speed of sound experiment?

A

Somone makes a sound and someone 100m away will start a stopwatch when they see the sound being made and will stop it when they hear the sound.

53
Q

What is an anomaly?

A

Something different from other results and not following the pattern.

54
Q

What is the stopping distance?

A

The distance traveled before hitting the brakes and fully stopping.

55
Q

What is the Debunking/braking distance?

A

The distance travelled by a car when the driver realises s/he needs to stop.

56
Q

What can be a factor of the debunking distance?

A

-If the driver is drunk/tired
-The speed of the car

57
Q

What can factor the debunking distance

A

-Condition of road/car

58
Q

What precautions should you take during pregnancy?

A
  • Don’t smoke as the baby may get lung disease.
    -Vitamins allow the baby to grow.
59
Q

Adaptions of leaves for photosynthesis

A

-Leaf gas stomata which open to allow carbon dioxide in
-Leaf has a large surface area allowing carbon dioxide to be absorbed.

60
Q

What is a mutation

A

A rare change in DNA.

61
Q

How does the carbon cycle go?

A

1) Plants and humans respire, releasing carbon dioxide into the environment
2) Plants also photosynthesize, taking carbon dioxide from the environment
3) When a plant dies, a decomposer will come and break down the plant and will use the glucose to respire, releasing more carbon dioxide.
4) Combustion and machines releasing more into the atmosphere.

62
Q

What is the speed equation?

A

Speed=Distance/time

63
Q

What is the equation for weight?

A

Year 8 Science Bahmed (1 decks)

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