Biology Topic A

Front 1

What is the definition of a cell?

Back 1

A cell is a basic unit of life, from which larger structures such as tissue and organs are made.

Front 2

What is a unicellular organism?

Back 2

An organism, such as bacteria, that consists of a single cell

Front 3

What is a multicellular organism?

Back 3

An organism that consists of many cells

Front 4

What are the causes, symptoms, and treatments of kwashiorkor?

Back 4

Causes: protein and amino acids deficiency

Symptoms: Pot belly, loss of muscle mass, thinning hair, red patches of skin, unable to grow

Treatment: high protein diet, vitamin supplements

Front 5

What are the causes, symptoms, and treatments of rickets?

Back 5

Causes: lack of vitamin D and calcium

Symptoms: bleeding gums, skeletal deformities, fragile bones

Treatment: vitamin D and calcium

Front 6

What are the causes, symptoms, and treatments of anemia?

Back 6

Causes: blood loss

Symptoms: fatigue, weakness, cold hands and feet, pale skin, dizziness

Treatment: iron-rich food, vitamin B12-rich food

Front 7

What are the causes, symptoms, and treatments of night blindness?

Back 7

Causes: vitamin A deficiency

Symptoms: trouble adapting and seeing in the dark, blurry vision in the dark

Treatment: vitamin A, glasses, surgery

Front 8

What are the causes, symptoms, and treatmentsof scurvy?

Back 8

Causes: vitamin C deficiency

Symptoms: fatigue, gum disease, bleeding, poor wound healing

Treatment: vitamin C, citrus fruits

Front 9

What are the causes, symptoms, and treatments of beri-beri?

Back 9

Causes: vitamin B1 deficiency

Symptoms: vomiting, fatigue, fever, weakness

Treatment: thiamin supplements, vitamin B1-rich foods

Front 10

What is diffusion?

Back 10

Diffusion is the net movement of particles from an area of high concentration to an area of low concentration

Front 11

What is a partially permeable membrane?

Back 11

It is a cell membrane that is permeable to small molecules (e.g water)

Front 12

What is osmosis?

Back 12

Osmosis is the net movement of water molecules across a partially permeable membrane from an area of high water concentration to an area of low water concentration.

Front 13

What are carbohydrates made up of?

Back 13

Carbon, hydrogen and oxygen ONLY

Front 14

What are the types of carbohydrates?

Back 14

Monosaccharides: Simple sugars (glucose)
Disaccharides: Double sugars (sucrose)
Polysaccharides: Large molecules (starch)

Front 15

What are fats made up of?

Back 15

Carbon, hydrogen, nitrogen
Fats are also known as lipids

Front 16

What are proteins made up of?

Back 16

Carbon, hydrogen, nitrogen, oxygen, sulphur ONLY

Front 17

What are proteins?

Back 17

Proteins are a group of large, complex polymer molecules, made up of long chains of amino acids

Front 18

What is the process for a starch test?

Back 18

Put food in a dropping tile, then add 2 drops of iodine

Front 19

What color would be visible if starch is present in a food test?

Back 19

If starch is present, there will be a blue/black color
If starch isn't present, there will be a orange/yellow color

Front 20

What is the product of carbohydrates breaking down?

Back 20

Glucose

Front 21

What is the product of fat breaking down?

Back 21

Fatty acids and glycerol

Front 22

What is the product of protein breaking down?

Back 22

Amino acids

Front 23

What color would be visible if proteins is present in a food test?

Back 23

If protein is present, there will be a purple/violet color
If protein is absent, there will be a blue color