Aqa Biology - B3

Front 1

Define a Tissue

Back 1

A tissue is a group of cells with similar structure and function working together.

Front 2

Give an example of a Tissue and it's function

Back 2

1. Muscular tissue can contract to bring about movement

2. Glandular tissue contains secretory cells that can produce and release substances such as enzymes and hormones.

3. Epithelial tissue covers the outside of your body as well as your internal organs.

Front 3

Define an Organ

Back 3

Organs are collections of tissues. Each organ contains several tissues, all working together to perform a specific function.

Front 4

Define and Organ System

Back 4

Organ systems are groups of organs that all work together to perform specific functions.

Front 5

Put the following into order, smallest to biggest:

-Organ

-Cell

-System

-Tissue

Back 5

Cell, Tissue, Organ, System

Front 6

What organs are part of the Digestive System?

Back 6

Gut, stomach, small intestine, large intestine and pancreas

Hint 6

There are 5

Front 7

What organs are part of the Circulatory System?

Back 7

Heart, arteries, veins, blood etc.

Front 8

What organs are part of the Respiratory System?

Back 8

Lungs, alveoli, trachea

Front 9

What organs are part of the Reproductive System?

Back 9

Uterus, penis, ovaries

Front 10

What organs are part of the Nervous System?

Back 10

Brain, spinal cord

Front 11

What organs are part of the Excretory System

Back 11

Kidneys, lungs

Front 12

What organs are part of the Muscular Skeletal System

Back 12

Muscles, bones

Front 13

What organs are part of the Endocrine System?

Back 13

Pancreas, thyroid gland

Front 14

What is the function of the Liver?

Back 14

Producing bile

Front 15

What is the function of the Stomach?

Back 15

Breaking down large insoluble molecules into smaller molecules

Front 16

What is the function of the Small intestine?

Back 16

Breaking down large insoluble molecules into smaller soluble molecules and absorbtion

Front 17

What is the function of the Large Intestine?

Back 17

Absorbing water from undigested food

Front 18

What is the function of the Pancreas?

Back 18

Makes and releases Digestive juices containing enzymes to break down your food

Front 19

What is the name and chemical formula for the single sugar unit in some carbohydrates?

Back 19

Glucose - C6H12O6

Front 20

What is the name of carbohydrates that are made of two sugar units joined together?

Back 20

Sucrose

Front 21

Name 2 examples of more complex carbohydrates

Back 21

Starch, Glycogen and Cellulose

Front 22

What is the name of one 'Sugar unit'?

Back 22

A simple sugar

Front 23

State the importance of having carbohydrates in our diet

Back 23

Energy source - break down glucose in respiration to release energy for metabolic reactions

Front 24

What 2 substances are Lipids made of?

Back 24

1 glycerol + 3 fatty acids

Front 25

State the importance of having Lipids in our diet

Back 25

Energy store, make up cell membranes, steroid

Front 26

What are proteins made up of?

Back 26

Amino acids

Front 27

State the importance of having proteins in our diets

Back 27

Structural components, hormones, antibodies, enzymes

Front 28

Name the chemical reagent used to test for starch

Back 28

Iodine

Front 29

What colour is a positive result for starch test

Back 29

Blue-black

Front 30

What is the chemical reagent used to test for sugars

Back 30

Benedict's solution

Front 31

What is the positive result for sugars

Back 31

Orange/ brick-red

Front 32

What is the chemical reagent used to test for proteins

Back 32

Biuret solution

Front 33

What is the positive result for proteins

Back 33

Purple

Front 34

What is the reagent used for lipids

Back 34

Ethanol + water

Front 35

What is the positive result for lipids

Back 35

White milky layer

Front 36

Define a catalyst

Back 36

A substance which increases the speed of reaction, without being changed or used up in the reaction

Front 37

Define an enzyme

Back 37

A biological catalyst that speeds up reactions

Front 38

Explain what the active site is

Back 38

The site on an enzyme where the substrate fits

Front 39

Briefly describe the lock and key model

Back 39

Substrate fits into the active site to form enzyme-substrate molecule -

-> Reaction occurs --> enzyme releases products and binds to another substrate

Front 40

Explain what the word denature means

Back 40

Loss of active site

Front 41

How does temperature affect enzymes' rate of reaction

Back 41

As temperature increases, rate of reaction increases until after optimum temperature when the enzyme denatures

Front 42

Why do enzymes stop working working past their optimum temperatures

Back 42

Denatured (substrate can no longer bind to active site)

Front 43

What enzyme digests carbohydrates

Back 43

Carbohydrase

Front 44

What enzyme digests starch

Back 44

Amylase

Front 45

What enzyme digests proteins

Back 45

Proteases

Front 46

Where is Carbohydrase (e.g. Amylase) produced

Back 46

Mouth, pancreas, small intestine

Front 47

Where is protease produced

Back 47

Stomach, pancreas, small intestine

Front 48

Where is lipase produced

Back 48

Pancreas, small intestine