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Science Gcse Last Min > 1 > Flashcards

1 Flashcards

1
Q

What cell contains genetic information

A

Nucleus

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2
Q

What cell controls what enters and leaves the cell

A

Cell memberane

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3
Q

Where does photosunthesis happen

A

Chloroplast

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4
Q

A chemical excreted by animals is ?

A

Urea

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5
Q

A chemical stored in animal cells is ?

A

Glyclogen

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6
Q

A chemical stored in plant cells is ?

A

Starch

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7
Q

A chemical that strengthens plant cell walls is ?

A

Cellulose

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8
Q

Give a function of a muscle cell

A

Allows movement

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9
Q

How are muscles cells adapted to their function

A

Mitrochondria to transfer a lot of energy

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10
Q

What substance is used as an antibiotic?

Aspirin
Digitalis
Penicillin

A

Penicillin

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11
Q

Whats one symptom of gonorrhoea

A

Vomitting

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12
Q

What is a control variable

A

Keep the same/dont change

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13
Q

Why cant antibiotics be used to treat HIV infections

A

Antibiotics cannot kill viruses

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14
Q

Define fermentation

A

A substance breaks down into a simple substance

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15
Q

What is the equation for animal cells

A

Gluclose –> lactic acid

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16
Q

Which organ from plant cell absorbs water from the soil

A

Root

17
Q

The concentration of nitrate ions in the soil is lower than the concentration of nitrate ions inside a plant.
How would the nitrate ions move from the soil into the cells of this plant?

A

Active transport

18
Q

Define active transport

A

The movement of ions across a cell membrane into a reigon of higher concentration

19
Q

Define osmosis

A

The movement of water molecules from a solution of high to low

20
Q

Define translocation

A

A genetic change in which one chromosome breaks off and attaches to another chromosome

21
Q

Define evapouration

A

Liquid to vapour

22
Q

One use of sugars in a plant ?

A

To produce protien

23
Q

Define gaurd cell

A

A cell that is surrounded by stoma

24
Q

Define meristem cell

A

Area of unspecialised cells in plants that are capable of cell division

25
Q

Define palisade cell

A

Outermost layer on a leaf and packed cells

26
Q

Why do stomata open during the day

A

To allow carbon dioxide in

27
Q

Define stomata cells

A

Small pores on a leaf formed by a par of gaurd cells

28
Q

Water vapour is lost through stomata.
Explain the difference in the number of stomata on the upper and lower surfaces of the leaves.

A

There are less stomata on the upper surface of the leaves because its more
Warmer

29
Q

What is the equation for photosynthesis?
C6H12O6 + 6 O2 –> 6 CO2 + 6 H2O
6 CO2 + 6H2O –> C6H12O6 + 6 O2
6H2O + 6 O2 –> C6H12O6 + 6 CO2
6 O2 + 6 CO2 –> C6H12O6 + 6 H2O

A

6 CO2 + 6H2O –> C2H12O6 + 6 O2

30
Q

Define independent variable

A

A variable that doesent depend on another/ isnt changed by other variables

Science Gcse Last Min (2 decks)

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