Respiration

Question 1

What is respiration

Answer 1

A chemical reaction that occurs in every living cell

Question 2

What is the word equation for respiration

Answer 2

Glucose + water➡️carbon dioxide + water + energy

Question 3

Name the three systems involved it respiration

Answer 3

Respiratory, digestive, circulatory

Question 4

Why do we need energy

Answer 4

Cells use the energy for all their reactions and processes

Question 5

What are the 6 stages when u inhale

Answer 5

the diaphragm contracts and flattens
the intercostal muscles contract
ribs move up and out
the volume in the chest cavity increases
the air pressure inside the chest cavity and therefore the lungs decreases below atmospheric air pressure.
Air rushes in from the higher pressure outside the mouth into the area of lower pressure in the lungs.

Question 6

What are the 6 stages when u exhale

Answer 6

the diaphragm relaxes and domes up
the intercostal muscles relax
the rib cage moves down and in
the volume of the chest cavity is decreased
the air pressure inside the chest cavity is increased above atmospheric air pressure
air id forced out

Question 7

What is ventilation

Answer 7

Getting air in and out of the lungs

Question 8

What is gas exchange

Answer 8

Gas exchange is getting the gases to move into or out of the blood. Gas exchange is a two way process – waste gases are removed and oxygen is absorbed.

Question 9

How does ventilation work

Answer 9

Ventilation in humans is the movement of air through the nose or mouth, down the trachea through the bronchi and bronchioles and into the alveoli of the lungs.

Question 10

What is the digestive system

Answer 10

changes large insoluble food molecules into small soluble molecules that are able to be absorbed into the blood stream.

Question 11

What is the circulatory system

Answer 11

carries the small soluble food molecules and oxygen to every cell in our body and takes away unwanted waste e.g. carbon dioxide, via the blood

Question 12

What is the respiratory system

Answer 12

-oxygen is taken into our bodies via the lungs and carbon dioxide is removed. The oxygen is then absorbed into the blood, travels to the heart and is then pumped around the rest of the body.

Question 13

Components of Biological molecules

Answer 13

hydrogen, oxygen, nitrogen, phosphorus, sulfur, and additional minor elements.

Question 14

Hydrogencarbonate indicator - colour changes with respiration

Answer 14

an increase in carbon dioxide changes the indicator to yellow and a decrease in carbon dioxide changes it to purple.

Question 15

Identify what plants need for healthy
germination

Answer 15

Oxygen
Water
Warmth

Question 16

Identify the range of minerals needed for healthy
growth

Answer 16

Nitrogen
Phosphorus
Magnesium
Nitrogen
Calcium
Sulfur

Question 17

What are the features of the alveoli?

Answer 17

they have moist, thin walls (just one cell thick) they have a lot of tiny blood vessels called capillaries.

Question 18

Diffusion as a key mechanism to allow exchange
of gases

Answer 18

Gas exchange is achieved by diffusion. This is a process by which particles move naturally from a region where they are in high concentration to a region where they are in lower concentration

Question 19

What chemicals are found in cigarettes

Answer 19

Nicotine
Carbon monoxide
Tar
Ammonia

Question 20

Dangers about nicotine

Answer 20

It can cause an increase in blood pressure, heart rate, flow of blood to the heart and a narrowing of the arteries

Question 21

Dangers about tar

Answer 21

irritate the nose, throat and lungs.

Question 22

Dangers about ammonia

Answer 22

High levels of ammonia may cause burns and swelling in the airways, lung damage and can be fata

Question 23

Dangers about carbon monoxide

Answer 23

Add a layer around blood cells stoping oxygen getting into your blood