WorksheetsGCSE AQA Biology Organisation
Total questions: 23
Worksheet time: 15mins
What are the levels of living organisms from smallest to largest?
Tissue - Organ Systems - Cells - Organs - Organism
Cells - Tissue - Organs - Organ Systems - Organisms
Organs - Organ Systems - Organisms - Cells - Tissue
Cells - Tissue - Organisms - Organ Systems - Organs
Which part of the digestive system had a low pH to help the enzymes with low optimum pH level
Mouth
Large Intesine
Small Intestine
Stomach
Which one of these statements about enzymes isn't true.
The active site on the enzyme has a specfic shape to only fit one substrate.
When the temperature around the enzyme is above it's optimum temperature, the enzyme will start to denature.
Enzymes can speed up reactions. Examples can be breaking down molecules, or putting molecules together.
When a enzyme is in a pH that is not in it's optimum pH range, it will die.
Denaturing is when the enzyme, and it's active site, change shape.
Protease breaks down (a) molecules.
Lipase breaks down (a) molecules.
Amylase breaks down (a) molecules.
What does Bile do in digestion?
Protects the cells in the stomach lining from the acid inside it.
Allows the lock and key model of the enzymes to work more efficently.
Creates better conditions for good bacteria to grow in digestive system.
Emulsifise (break down) fats.
Bile is made in the ______ and released from the_____.
Liver, Gall Bladder
Kidneys, Small Intestine
Pancrease, Stomach
Saliva Glands, Mouth
The reagents for testing for the following food; Fats, Sugars, Proteins, Starch
Ethanol, Benedict's, Biuret, Iodine
Benedict's, Biuret, Iodine, Ethanol
Biuret, Iodine, Benedict's, Ethanol
Iodine, Benedict's, Ethanol, Biuret
What are the two different names of heart chambers?
Anodes
Atriums
Lumens
Ventricles
The Valves in the heart and veins prevent ________.
Forward Flow
Cardiac Flow
Lateral Flow
Back Flow
What does the heart do to the blood.
Oxygenates the blood
Put pressure on the blood to push it around the body.
Increases the whiteblood count in the blood.
Decreases blood pressure to prevent cardiac disease.
Why are human cardiac systems referred to as 'Double Circulatory Systems'?
The heartrate can be doubled to pump more blood around the body when exercising.
There are two 'dubs' (dub-dub) in one heart beat.
The blood moves through the heart twice to be pressurized twice.
Becasue there are two different kinds of blood vessels that are attached to the heart (arteries and veins).
Why do arteries have very thick and elastic walls.
The protect the blood inside.
To prevent coronary heart disease,
So substance like oxygen can't move through the walls.
To withstand the large amount of pressure in the blood they carry.
Capillaries are really thin so substances like oxygen, carbon dioxide and glucose can move in and out of the vessel. How thick are they?
Roughly the same thickness of a hair
One cell thick
1 Micrometres
5 Micrometres
Which of these are not found in blood
Red Blood Cell
White Blood Cell
Bile
Platetes
Cornary heart disease (CHD) is when arteries on the heart become blocked with fatty deposits. What isn't a signifcant factor that increases the chance CHD.
Blood Chloesterol Levels
Genetics
Diet and Exercise
Testerone Levels
What treatment for Coronary Heart Disease does this picture show?
Stent
Statin
Heart Transplant
By-Pass
What part of the heart has been replaced in the picture?
Atrium
Ventricle
Valve
Septum
Cancer is a disease of ______
Uncontrolled cell growth
The slowing of the nervous system
Genetic destruction
Reducing the immune system
The most dangerous type of cancer is (a) , because it can spread around the body.
The Xylem vessels transport what around the plant?
Water
Amino Acids
Sugar
Minerals
What are parts A and B
A. Stomata B. Guard Cell
A. Guard Cell B. Stomata
A. Palisade B. Spongy Mesophyl Cell
A. Spongy Mesophyl Cell B. Palisade
