Organisation Flashcards

1
Q

What is a tissue

A

group of cells with a similar structure and function

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2
Q

What are organs

A

aggregations of tissues performing specific functions.

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3
Q

What are organ systems

A

Organs are organised into organ systems, which work together to form organisms e.g. digestive system

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4
Q

How do enzymes catalyse reactions

A

By lock and key method of enzyme fitting with substrates

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5
Q

Define the process of Digestion

A

large insoluble food –> small soluble food

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6
Q

What 2 purposes does Bile do

A
  1. Neutralises Ph

2. Emulsifies Fat

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7
Q

What does the Small Intestine do

A

absorb nutrients through villi, goes to liver by hepatic portal vein

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8
Q

How is the villi adapted for diffusion of nutrients

A
  • inc. surface area through microvilli spikes on every villus
  • Good Capillary Network so conc gradient
  • One cell thick; short diffusion path
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9
Q

What does the villi contain

A

Lacteal (lymph) and Capillary network

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10
Q

What nutrients pass into the Lacteal (lymph)

A

Glycerol and Fatty Acids

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11
Q

What nutrients pass into the capillaries

A

Glucose and Amino Acids

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12
Q

Define Defecation

A

removing of solid waste from the body

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13
Q

What denatures Enzymes

A

going above optimum temp. and not in the right pH range

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14
Q

What is the lock and key hypothesis

A

the substrate shape is complimentary to the shape of the active site

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15
Q

What organs make amylase,protease and digestive enzymes respectivley

A

Salivary gland
Stomach
Small Intestine

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16
Q

Which enzymes break down carbohydrase,lipids and proteins

A

amylase and other carbohydrase enzymes break down starch into sugar
protease enzymes break down proteins into amino acids
lipase enzymes break down lipids (fats and oils) into fatty acids and glycerol

17
Q

Define Anabolic

A

enzymes build up 2 substates to one product

18
Q

Define Catabolic

A

enzyme breaks down 1 substrate goes in 2 products come out