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Biology > B2 Paper One Organisation > Flashcards

B2 Paper One Organisation Flashcards

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1
Q

What is a pulmonary circuit?

A

The part if the circulatory system that involves the right side of the heart,the lungs and the blood vessels that connect them together

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2
Q

What does the xylem transport ?

A

Water and mineral ions

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3
Q

What does phloem transport?

A

Sugars and amino acids dissolved in water

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4
Q

What factors affect transpiration?

A

-temprature
-humidity
-air movement
-light intensity

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5
Q

Where is oxygen transported from and where to?

A

From-lungs
To-all the body cells

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6
Q

Where is carbon dioxide transported from and where to?

A

From-all the body cells
To-lungs

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7
Q

What is a systematic circuit?

A

The part of the circulatory system that includes the left side of the heart,the rest of the body apart from the lungs and the blood vessels that connect them together

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8
Q

What is an artificial pacemaker?

A

A medical device that uses electrical impulses the regulate heart beats

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9
Q

What is an artery?

A

A blood vessel that carry’s blood away from the heart

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10
Q

What is a vein?

A

A blood vessel with valves that transport blood to the heart

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11
Q

What is a capillary?

A

Tiny blood vessels with walls one-cell thick where exchange of materials occurs

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12
Q

What are the 4 components of blood?

A

-plasma
-red blood cells
-white blood cells
-platelets

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13
Q

What is a stent?

A

A device consisting of a wire mesh tube used to keep a narrowed or blocked coronary artery open

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14
Q

What is an alloy?

A

A mixture of 2 or more elements at least one of which is a metal

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15
Q

What is a heart transplant?

A

An operation to replace a damaged heart with a healthy one from a donor

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16
Q

What is coronary heart disease?

A

A form of heart disease in which one or more of the coronary arteries become blocked depriving the heart muscles of oxygen

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17
Q

What is bile?

A

A substance produced in the liver it emulsifies fat to prepare them for digestion

18
Q

What does protease break down?

A

Proteins

19
Q

What does carbohydrase break down?

A

Carbohydrates

20
Q

What does lipase break down?

A

Lipids

21
Q

What factors affect enzymes?

A

-temprature
-pH

22
Q

What are 2 functions of the human digestive system?

A

-breaks down complex food substance
-provides the very large surface area for maximum absorption of food

23
Q

What is the test and result for fats?

A

Test:Sudan III
Result:red-stained layer forms on the surface of the water

24
Q

What is the test and result for proteins?

A

Test:biuret
Result:turns purple

25
Q

What is the test and result for starch?

A

Test:iodine
Result:black-black colour

26
Q

What is the test and result for sugars?

A

Test:Benedict’s solution
Result:colour change

27
Q

What increases the effectiveness of exchange surfaces?

A

-large surface area
-a short distance required for diffusion

28
Q

What are proteins made up of?

A

Amino acids

29
Q

What is the major function of lipids?

A

Energy,make up part of cell membrane so essential for normal growth

30
Q

What is the major function of proteins?

A

Growth and repair

31
Q

What is a cell?

A

The basic building block of all living organisms

32
Q

What is a tissue?

A

A group of cells working together to perform a shared function and often with similar structure

33
Q

What is the major function of carbohydrates?

A

Source of energy, glucose is the main respiratory substrate

34
Q

What do carbohydrates include?

A

-starch and sugars

35
Q

What is a companion cell?

A

Lies alongside a sieve tube in the phloem and provides the tube with energy to transport sugars and amino acids in solutions

36
Q

What is a sieve tube?

A

The conducting cells that are end to end and make up the phloem

37
Q

What is photosynthesis?

A

A chemical process used by plants to make glucose +oxygen from carbon dioxide and water using light energy. Oxygen is produced by photosynthesis

38
Q

What are the layers of a leaf (ordered)?

A

1.waxy cuticle
2.upper epidermis
3.palisade cells
4.air spaces
5.spongy mesophyll
6.lower epidermis
7.guard cells
8.stomata
9.waxy cuticle

39
Q

What is a lignin?

A

Carbohydrate material lining the xylem vessels providing strength+support

40
Q

What is translocations?

A

Transport of dissolved material with a plant

Biology (3 decks)

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