Science 1
Name the flow of oxygen from your mouth/nose to alveoli
-Mouth/ nose
-Larynx
-Trachea
-Bronchi
-Bronchioles
-Alveoli
◦What type of gas do we breathe in?
Oxygen
◦What type of gas do we breathe out?
-Carbon dioxide
What are the two types of respiration?
Aerobic and anaerobic respiration
◦What is the difference between food and nutrients?
-Food is what you eat
-Nutrients is what your body absorb from the food
◦What happen to your ribcage when you inhale?
-Moves upwards and outwards (expands)
◦What happen to your diaphragm when you breathe out?
-relaxes and curves up
◦Name the type of fluid that flows in the circulatory system
Blood
◦What is the main function of a white blood cell?
-Fight against pathogens
◦Why do we take in nutrients?
-To provide energy for us
-To keep us healthy
◦Describe what happen to your chest cavity when you inhale?
-Volume increase
-Pressure decrease
-Air goes in
Name four things you take in if you smoke.
-Nicotine
- Tar
- Carbon monoxide
- Particulates
◦Describe the shape of a red blood cell
- Biconcave disc-shape
◦What is the function of plasma?
-Transport digested food and waste substance to body cells
-Transport red blood cells to body cells
Why do a pregnant woman need plenty of protein in their diet
To ensure the fetus (baby) can grow
What can tar from cigarettes do to you?
- Gives lung cancer
Give an example of development.
- when baby can start walking
- when baby can start talking
- Any reasonable answer
What is the equation for anaerobic respiration?
Glucose --> lactic acid + energy
◦What is the name of special pigment in red blood cell?
-Haemoglobin
◦What is the function of oil and fat in our body?
-Stored as an energy reserve
-Make cell membranes
◦What happen to your diaphragm when you inhale?
-Contract and gets flatten
◦How many litters of blood does and average adults have?
-5.5 litres
What is growth?
When you get bigger (taller)
What is the role of the circulatory system?
It carries oxygen, nutrients and hormones' to cells and removes waste products, like carbon dioxide.
- disturb oxygen transport
-makes you feel tired
◦Name the muscles involve during respiration
-Intercostal muscles
-Diaphragm
◦What is the name of pigment when hemoglobin combined with oxygen?
-Oxyhemoglobin
◦Does red blood cell have a nucleus? Why?
-No. to make space for more oxygen
What can nicotine do to your body?
- Make blood vessels narrower
- Gives heart disease
- Keep you stay alert
Diet that provides all different kinds of nutrients, and the right amount of energy
◦What is the percentage of red blood cell present in the blood?
44%
◦What is the percentage of plasma present in blood?
55%
◦Name four components present in the blood
-Plasma
-Red blood cell
-White blood cell
-Platelets
Define the word respiration
the process that the body uses to release energy from digested food (glucose)
◦What is the name of the disease when someone is low vitamin D?
rickets
What happen if you breathe in particulates from cigarette?
-break down alveoli wall
- difficult to get enough oxygen into the body
◦What is the function of calcium?
- To keep the bone and teeth strong and healthy
◦what is the name of the disease when someone is low in iron? (two points)
-Anaemia
◦What is the function of iron?
-To make haemoglobin
◦What is the name of the disease when someone is low vitamin C? (two points)
-scurvy
The amount of oxygen needed to remove all the lactic acid after exercise is called ________________
oxygen debt
◦Carbohydrates is broken down into smaller pieces in our body. What is the name of the smaller pieces molecule?
-glucose
At what age do people stop growing?
18-20 years old
We need energy all the time but we do not eat all the time. Where do we get the energy from?
From the energy reserves
Why do different people use different amount of energy
- Different lifestyle
- Gene factor
- Some people growfast