bio review nutrients
DESCRIPTION
Our review lesson on nutrientsTRANSCRIPT
![Page 1: Bio review nutrients](https://reader036.vdocuments.net/reader036/viewer/2022062513/555325d0b4c90575768b51e0/html5/thumbnails/1.jpg)
NutrientsReview Lesson 101
![Page 2: Bio review nutrients](https://reader036.vdocuments.net/reader036/viewer/2022062513/555325d0b4c90575768b51e0/html5/thumbnails/2.jpg)
Types of nutrients
Nutrients
![Page 3: Bio review nutrients](https://reader036.vdocuments.net/reader036/viewer/2022062513/555325d0b4c90575768b51e0/html5/thumbnails/3.jpg)
Types of nutrients
Nutrients
Proteins
Fats
Carbohydrates
Minerals
Vitamins
Water
![Page 4: Bio review nutrients](https://reader036.vdocuments.net/reader036/viewer/2022062513/555325d0b4c90575768b51e0/html5/thumbnails/4.jpg)
Why do we need nutrients?
• For energy to do work (fats and carbohydrates)
• To help repair worn out cells and help in growth and development (proteins)
![Page 5: Bio review nutrients](https://reader036.vdocuments.net/reader036/viewer/2022062513/555325d0b4c90575768b51e0/html5/thumbnails/5.jpg)
Protein Structure
![Page 6: Bio review nutrients](https://reader036.vdocuments.net/reader036/viewer/2022062513/555325d0b4c90575768b51e0/html5/thumbnails/6.jpg)
Protein Structure
• 23 different types
• Contains Nitrogen, Carbon, Oxygen and Hydrogen
Amino acids
• Long chains of amino acids combined together
Polypeptides • There are 4
levels of proteins
Proteins
![Page 7: Bio review nutrients](https://reader036.vdocuments.net/reader036/viewer/2022062513/555325d0b4c90575768b51e0/html5/thumbnails/7.jpg)
Fats Structure
![Page 8: Bio review nutrients](https://reader036.vdocuments.net/reader036/viewer/2022062513/555325d0b4c90575768b51e0/html5/thumbnails/8.jpg)
Fats Structure
Fats 3 Fatty acids and 1 glycerol
![Page 9: Bio review nutrients](https://reader036.vdocuments.net/reader036/viewer/2022062513/555325d0b4c90575768b51e0/html5/thumbnails/9.jpg)
Fat molecule
Gly
cero
l Fatty acidFatty acidFatty acid
![Page 10: Bio review nutrients](https://reader036.vdocuments.net/reader036/viewer/2022062513/555325d0b4c90575768b51e0/html5/thumbnails/10.jpg)
Types of Carbohydrates
Carbohydrates
![Page 11: Bio review nutrients](https://reader036.vdocuments.net/reader036/viewer/2022062513/555325d0b4c90575768b51e0/html5/thumbnails/11.jpg)
Types of Carbohydrates
Carbohydrates
Monosaccharide
Glucose
Fructose
Disaccharide
Sucrose
Maltose
Polysaccharide
Starch Cellulose
Glycogen
![Page 12: Bio review nutrients](https://reader036.vdocuments.net/reader036/viewer/2022062513/555325d0b4c90575768b51e0/html5/thumbnails/12.jpg)
Structures
General
term
Carbohydrates
Starch
Cellulose
Glycogen
![Page 13: Bio review nutrients](https://reader036.vdocuments.net/reader036/viewer/2022062513/555325d0b4c90575768b51e0/html5/thumbnails/13.jpg)
Structures
PolysaccharideDisaccharideMonosacchari
deGeneral term
Carbohydrates Glucose Maltose
Starch
Cellulose
Glycogen
Condensation
Hydrolysis
![Page 14: Bio review nutrients](https://reader036.vdocuments.net/reader036/viewer/2022062513/555325d0b4c90575768b51e0/html5/thumbnails/14.jpg)
Food tests: Fats
Fats
Solution remains
clear
Cloudy white
emulsion
formed
Negative
Ethanol emulsion test
Positive Ethanol emulsion test
![Page 15: Bio review nutrients](https://reader036.vdocuments.net/reader036/viewer/2022062513/555325d0b4c90575768b51e0/html5/thumbnails/15.jpg)
Food tests: Fats
Fats
![Page 16: Bio review nutrients](https://reader036.vdocuments.net/reader036/viewer/2022062513/555325d0b4c90575768b51e0/html5/thumbnails/16.jpg)
Food tests: Proteins
Proteins
Solution
remains blue
Solution turns purple
Negative
Biuret test
Positive
Biuret test
![Page 17: Bio review nutrients](https://reader036.vdocuments.net/reader036/viewer/2022062513/555325d0b4c90575768b51e0/html5/thumbnails/17.jpg)
Food tests: Reducing sugars
(monosaccharides and
maltose)
Reducing sugars
Solution remains blue
Green/yellow/
orange/red precipitate
forms
Negative Benedict’s
test
Positive Benedict’s
test
![Page 18: Bio review nutrients](https://reader036.vdocuments.net/reader036/viewer/2022062513/555325d0b4c90575768b51e0/html5/thumbnails/18.jpg)
Food tests: Starch test
Starch
Remains
brown
Turns blue-black
Negative
Iodine test
Positive
Iodine test
![Page 19: Bio review nutrients](https://reader036.vdocuments.net/reader036/viewer/2022062513/555325d0b4c90575768b51e0/html5/thumbnails/19.jpg)
Water PropertiesWater
propertyHigh latent heat of
vaporisation
High specific heat capacity
Water expands when it freezes
Water is a universal solvent
Water has strong cohesive forces of
attraction
Observations
You feel cooler when you sweat as sweat
evaporates
Water remains cool despite a hot weather
Coke bottles will burst in the freezer
Our body has 70% water
Water droplets remain spherical