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GCSE B1 > 1 organisation 1 > Flashcards

1 organisation 1 Flashcards

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1
Q

What is Cell?

A

The cell is the smallest functional unit of life that can exist independently

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2
Q

What is a tissue?

A

A tissue is a group of similar cells that work together for a specific function

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3
Q

What does Muscle tissue do?

A

Muscle tissue produces movement

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4
Q

What does Glandular tissues do?

A

secretes enzymes and hormones

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5
Q

Epithelial tissue

A

Epithelial tissue covers surfaces to protect them

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6
Q

What do xylem and phloem tissues do?

A

In plants, xylem tissue carries water and phloem tissue carries sugars

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7
Q

How is an organ formed?

A

An organ is formed from several tissues working together for a particular function

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8
Q

What tissues does your stomach have?

A
  • Glandular tissue to release digestive juices
  • Muscle tissue to churn food and digestive juices
  • Epithelial tissue to line the inside
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9
Q

Name a plants 3main organs

A

-Roots
-Stems
-Leaves
(Flowers)

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10
Q

What is a organ system?

A

An organ system is a collection of organs that work together to perform an overall body function

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11
Q

How does your digestive system work?

A

The Digestive System breaks down large, insoluble molecules into smaller, soluble molecules so that they can be absorbed into the blood and used by our cells

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12
Q

Name five organ systems:

A
  • digestive
  • circulatory
  • nervous
  • reproductive
  • musculoskeletal
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13
Q

Explain what the Nervous system does?

A

This is made up of nerve cells (neurons) that carry electrical impulses around the body to coordinate responses

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14
Q

Explain what the Circulatory system does?

A

This is formed from the heart and blood vessels, in order to transport oxygen and nutrients to all of the body cells

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14
Q

Explain how the reproductive system works?

A

Either male or female organs to enable sexual reproduction to take place

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15
Q

Explain what the The musculoskeletal system does

A

This is the bones of the body and the muscles attached to them for movement

16
Q

How do you get an organism? (7 stages)

A
  1. Atom
  2. Molecule
  3. cell
  4. tissue
  5. organ
  6. organ system
  7. organism
17
Q

List the order of the organs in the digestive system?

A
  • mouth (salivary glands)
  • Oesophagus/gullet
  • stomach
  • Liver
  • gall bladder
  • pancreas
  • small intestine
  • Large intestine
  • Rectum
17
Q

Explain what the mouth does in the digestive system

A

-contains teeth to break up food and salivary glands to secrete amylase enzyme (which breaks down starch) in the saliva

18
Q

Explain what the esophagus does in the digestive system?

A

Pushes food down to the stomach

18
Q

Explain what the stomach does in the digestive system

A
  • pummels the food with its walls
  • it produces the protease enzyme (digests protein), pepsin
  • produces hydrochloric acid to kill pathogens and to ensure the right pH for the protease enzyme to work (pH 2)
19
Q

Explain what the liver does in the digestive system

A
  • It’s where bile is produced

- bile neutralises stomach acid and emulsifies (breaking down of fat) fat

19
Q

Explain what the gall bladder does in the digestive system

A

-it’s where bile is stored before it’s released into the small intestine

20
Q

Explain what the pancreas does in the digestive system

A
  • Produces protease, amylase and lipase enzymes

- Then releases them into the small intestine

20
Q

Explain what the small intestine does in the digestive system

A
  • produces protease, amylase and lipase enzymes to complete digestion
  • this is also where the digested food is absorbed out of the digestive system into the blood
21
Q

Explain what the large intestine does in the digestive system

A

It’s where excess water is absorbed from the food

21
Q

Explain what the rectum does in the digestive system

A

The rectum followed by the anus allow any undigested matter to be egested

22
Q

Define catalyst

A

A substance that speeds up a chemical reaction without being used up its self

GCSE B1 (15 decks)

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