organisations Flashcards

1
Q

Name one of the organs in the digestive system where digestion takes place.

A

stomach or ‘small intestine’

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2
Q

Which organ system coordinates the actions of the body?

A

nervous system

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3
Q

The circulatory system, the nervous system and the digestive system are all examples of what?

A

organ systems

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4
Q

Cells form tissues. Tissues form __________. What word completes the sentence?

A

organs

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5
Q

What type of tissue produces enzymes?

A

glandular

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6
Q

What type of tissue produces digestive juices in the stomach?

A

glandular

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7
Q

What type of tissue is found in the stomach and is used to churn its contents?

A

muscular

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8
Q

What is the name given to biological catalysts?

A

enzymes

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9
Q

Enzymes can be affected by acidity and alkalinity. What name is given to the scale that measures acidity and alkalinity?

A

ph scale

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10
Q

What enzyme is produced in the salivary glands?

A

amylase

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11
Q

What is the missing word? Enzymes are described as biological catalysts because they increase the __________ of biochemical reactions inside and outside living cells.

A

rate/speed

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12
Q

What scientific name is given to the temperature or pH at which an enzyme works best?

A

optimum ph

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13
Q

what system is this? liver, stomach, large intestine , small intestine?

A

digestive system

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14
Q

what organ produces bile?

A

Liver

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15
Q

True or false? The small intestine produces enzymes.

A

True

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16
Q

Digestive enzymes break down food into molecules that are small enough to be… what? absorbed into the bloodstream -dissolved in water- evaporated

A

absorbed into the bloodstream

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17
Q

What is the missing word? High temperatures change an enzyme’s __________ and stop it working.

A

structure/shape

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18
Q

When a protein molecule permanently changes its shape on being heated, this is known as __________. What word completes the sentence?

A

denatured

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19
Q

True or false? Enzymes are made of proteins.

A

True

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20
Q

Which of the following processes does not require enzymes? - osmosis - replicating DNA - digestion

A

osmosis

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21
Q

True or false? Enzymes are described as biological catalysts because although they take part in biochemical reactions they are not used up in the process.

A

True

22
Q

What is the missing word? If an enzyme is heated to a temperature of 50°C it stops working permanently. The enzyme is said to have become __________ .

A

Denatured

23
Q

What word goes in blank A?
Enzyme reaction
protease A—-> amino acids

A

proteins

24
Q

The products of digestion are used to build new carbohydrates, lipids, and what else?

A

Proteins

25
Q

What cells in the blood help defend against infection?

A

White blood cells

26
Q

Name the structures that increase the surface area of the lungs in humans.

A

“alveoli” or “alveolus”

27
Q

How many chambers does the heart have?

A

4

28
Q

Which type of blood vessel is the smallest?

A

capillary or capillaries

29
Q

The sinoatrial node is a group of cells in the right atrium of the heart. It acts as a natural pacemaker, which means that it controls the __________ __________. What two words complete the sentence?

A

Heart rate or heart beat

30
Q

where would you find the bronchi

A

lungs

31
Q

where would you find the bronchi

A

lungs

32
Q

After exposure to ionising radiation, cells can divide uncontrollably. This is known as what?

A

cancer

33
Q

What drugs can be used to lower blood cholesterol levels?

A

statins

34
Q

Health is the state of physical and __________ well-being.
What is the missing word in this sentence?

A

mental

35
Q

Which plant organ absorbs the most light for photosynthesis?

A

leaf

36
Q

True or false? The epidermis of leaves of plants absorbs water for photosynthesis.

A

false

37
Q

Which type of tissue is found covering the organs of plants?

A

epidermis

38
Q

Name the type of plant tissue in which most photosynthesis takes place.

A

mesophyll

39
Q

Which tissue transports water around a plant?

A

xylem

40
Q

Which tissue transports water around a plant?

A

xylem phloem

41
Q

Name the gas that plants need to take in from the air for photosynthesis. Give the full name, not the symbol.

A

carbon dioxide

42
Q

Most of the gaseous exchange that occurs in a plant happens in what organ?

A

leaf

43
Q

Most of the water vapour lost from a plant is lost from the… what?

A

leaf

44
Q

What name is given to the pores in the surface of a leaf that allow gases in and out?

A

stomata

45
Q

Name the type of cells that give roots a greater surface area for absorption.

A

root hair cells

46
Q

The movement of water from the roots, through the plant and out of the leaves is known as the… what?

A

transpiration

47
Q

What plant tissue located at the tips of roots and shoots will differentiate into different plant cells?

A

meristem

48
Q

Which of these is an example of a plant organ?- stem- epidermis-mesophyll

A

stem

49
Q

name a plant tissue

A

xylem

50
Q

If a plant is losing water faster than it can be replaced by its roots, its stomata will __________. What one word completes the sentence?

A

close

51
Q

Where do plants on land get their ions from?

A

soil