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Biology > Respiration > Flashcards

Respiration Flashcards

1
Q

Who needs energy?Why?

A

Living and non-living things.To do work.

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2
Q

What does our body need energy for?

A

To carry out various activities.

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3
Q

Why do plants need energy?

A

To carry out different procceses like:
* growth
* absorption of water and
* photosynthesis.

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4
Q

Where do we get energy from?

A

Food.

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5
Q

In what form does food store energy?

A

chemical energy.

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6
Q

Define respiration.

A

The procces by wich food (glucose) is broken down by oxgen (oxidised) to release energy, carbon dioxide and water.

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7
Q

How is chemical energy in food being used?

A

The chemical energy in food is released by oxidation and the released energy is stored in the form of special molecules called adenosine triphosphate (ATP).

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8
Q

What gets liberated from food during oxygen?

A
  • Energy
  • Carbon Dioxide and
  • Water.
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9
Q

When does the process of respiration take place?

A

All the time.

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10
Q

How can respiration be represented?

A

Digested food(glucose) +Oxygen ——–) Energy+Waste products(water and carbondioxide)

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11
Q

What are the charecteristics of respiration?

A
  1. Food is broken down into simpler forms.
  2. Energy is produced.
  3. Exchange of gases occurs. Oxygen is used up and Carbon dioxide is given out.
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12
Q

where does the charecteristics of respiration take place?

A

In all living cells of a plant or an animal.

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13
Q

What is the types of respiration based on?

A

Whether oxygen is used up or not.

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14
Q

Define aerobic respiration.

A

The process in which oxidation of food takes place in the presence of oxygen is known as aerobic respiration.

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15
Q

Write the formula of aerobic respiration.

A

Digestested food (glucose) + oxygen ——-) energy(38 ATP)+carbon dioxide+ water

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16
Q

IN aerobic respiration does the digested food (glucose) get completely oxidised?What happens as a result?

A

Yes,carbon dioxide and water are produced.

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17
Q

How many ATP molecules are released from the oxidation of 1 glucose molecule?

Aerobic

A

38

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18
Q

Which type of respiration do most organisms use?Why?

A

Aerobic respiration.Because they require oxygen.

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19
Q

Define anaerobic respiration.

A

The respiration process in the absence of oxygen is known as anaerobic respiration.

19
Q

Give examples of organisms which use anaerobic respiration.

A

yeast and some bacteria.

20
Q

Is the glucose completely oxidised in anaerobic respiration?Is water produced?What is produced instead when glucose is oxidised?

A

No.no.ethyl alcohol +carbon dioxide+energy.

20
Q

Write the formula of anaerobic respiration.

A

Food(glucose)——–)ethyl alcohol+carbon dioxide+energy(2 ATP)

21
Q

In anaerobic respiration how many ATP molecules are released with the oxygen of 1 glucose molecule?

A

2

22
Q

What happens when we burn wood or petrol?

A

Combustion occurs,oxygen is used up amd carbon dioxide is given out, it is similar to respiration.

23
Q

Whaat are the steps of respiration in plants?

A
  • Oxygen is taken in through the stomata (small on the surface of leaves)
  • Stored food(glucose) is oxidised by the obsorbed oxygen.
  • Energy in the form of ATP molecules is produced.
  • Carbon dioxide and water is produced as end products, by the oxidation of food.
24
Q

Where does cellular respiration occur in plants and animals.

A

mitochondria.

24
Q

Do plants have the specific organs for breathing?

A

No.

25
Q

How does the exchange of gases occur in plants?

A

Diffusion.

26
Q

The diffusion of gases occur in what structures?

A
  • the stomata in the leaf- minute opening on the leaf surface.
  • the lenticels-openings in old stems.
  • the general surface of the root.
27
Q

How does diffusion occur in aquatic animals?

A

The gases diffuse through the moist body surface.

28
Q

What is the stomatal opening surrounded by?

A

Guard cells shaped like kidney shaped beans.

29
Q

What does the guard cells contain?What does “this object” do?

A

Chlorophyll, which traps sunlight which helps carry out photosynthesis.

30
Q

What are guards cells surrounded by?

A

Subsidairy cells.

31
Q

Define stomatal apparatus.

A

The whole structure containing of the opening, the guard cells and the subsidairy cells.

32
Q

Who am I?

Respiration which takes place without oxygen.

A

Anaerobic respiration.

33
Q

Who am I?

Respiration which takes place with oxygen.

A

Aerobic

34
Q

Give examples of the following.

(i) Anaerobic respiration.
(ii)Aerobic respiration.

A

(i) Yeast and some bacteria.
(ii)Animals and plants.

35
Q

Can germinating seed respire with the absence of oxygen?

A

Yes, but only for some time.

36
Q

Define fermentation.

A

The process by which food molecules(sugars) are incompletely broken down into ethyl alcohol and carbon dioxide.

37
Q

True/False.

Energy released in anarobic respiration > Energy in aerobic respiration.

A

FALSE!!!

38
Q

FIll in the blanks.

The ability of ……. and …….. to carry out …………….. respiration has employed the making of ……. like …………. ,…….. and………. .

A

yeast
bacteria
anaerobic
food items
yogurt
bread and
vinegar.

39
Q

CO2 is absorbed by …….

A

Potassium hydroxide(KOH)

40
Q

During photosynthesis ………. is obtained from the Sun.
During respiration ……. is produced in the form of ……. …………..,

A

energy
energy
ATP molecules.

41
Q

IN plants does respiration and photosynthesis take place simultaneously?

A

Yes.

42
Q

What is taken in and given out in….
(i) Respiration
(ii)Photosynthesis

A

(i) Oxygen in taken in while caron dioxide is given out.
(ii) Carbon dioxide is taken in while oxygen is given out.

43
Q

Spell:

[əˌdɛnəsiːn trʌɪˈfɒsfeɪt]

A

Adenosine triphosphate

44
Q

Why do we need to grow plants?

A

We need to grow plants to balance the environment, because it is the only source of oxygen for human beings, they are the only things in nature which can convert carbon dioxide to oxygen, therefore plants are known as lungs of the earth.

Biology (3 decks)

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