Biology Test Flashcards
Health and lifestyle
What do you need Carbohydrates for?
It is a source of energy.
What do you need lipids for?
as insulation and to make cell membranes.
What do you need proteins for?
to build and repair muscles and bones and to make hormones and enzymes.
What do you need vitamins for?
Some vitamins help you prevent infections and keep your nerves healthy, while others may help your body get energy from food or help your blood clot properly.
What do you need minerals for?
- building strong bones and teeth.
- controlling body fluids inside and outside cells.
- turning the food you eat into energy.
- helping your body work properly
What do you need water for?
bringing nutrients to cells, getting rid of wastes, protecting joints and organs, and maintaining body temperature.
What do you need fibre for?
to lower risk of heart disease, stroke, type 2 diabetes and bowel cancer.
What happens if we don’t have enough carbohydrates?
Your body will break down the fat.
What happens if we don’t have enough lipids?
you may notice symptoms such as dry rashes, hair loss, a weaker immune system, and issues related to vitamin deficiencies.
What happens if we don’t have enough protein?
make you lose muscle mass, which in turn cuts your strength, makes it harder to keep your balance, and slows your metabolism. It can also lead to anemia.
What happens if we don’t have enough vitamins?
you develop the risk of developing chronic disease including some cancers, heart disease, diabetes, osteoporosis and depression.
What happens if we don’t have enough minerals?
you develop the risk of developing chronic disease including some cancers, heart disease, diabetes, osteoporosis and depression.
What happens if we don’t have enough water?
Fatigue
Dark urine
Headaches
Dizziness
Thirst
What happens if you don’t get enough fibre?
constipation, irritable bowel syndrome (IBS), diverticulitis, heart disease and some cancers (including bowel).
Do you know the different nutrient groups and why they are needed?
protein, carbs, fats, vitamins, minerals, and water. They are needed to create a balanced diet.
Can you give examples of where in the diet these nutrients can be found?
Fruit and vegetables are a good source of vitamins and minerals and fibre, and should make up just over a third of the food you eat each day.
What is the test for starch?
Iodine test for starch, turns blue-black in the presence of starch.
What is the method for the test for sugars? What is a positive result/ negative result?
Benedict’s solution. green/yellow if the amount is low and red if it is high.
What two methods can you use to test for lipids?
The Sudan III test and the emulsion test.
What is the test for protein?
The biuret test. Purple colour shows the presence of protein.
What is a balanced diet?
eating a wide variety of foods in the right proportions, and consuming the right amount of food and drink to achieve and maintain a healthy body weight.