Respiration and cells Flashcards
Largest living thing ever?
Great Barrier Reef
Largest living thing in the world today?
Great Barrier Reef
Living thing that grows fastest?
Kelp
2 organs in digestive system?
Stomach
Intestines
System in plant that moves water?
Transport
Groups of cells that work together?
Tissues
Name of organisms that contain many cells?
Multicellular
Organ made up of muscle and gland tissue-digests food.
Stomach
Tissues transport what 2 things around a plant?
Water
Minerals
2 organs in a plant’s transport system?
Roots
Xylem
Cells that have different structures to carry out special functions.
Specialised
Cells in same tissue all have what appearance and functions?
Similar
Tissue found on outer side of leaves?
Protective
2 organs found in the circulatory system?
Blood
Heart
Heart would have this kind of tissue.
Muscle
Group of organs working together to perform a function?
System
Different tissues working together to perform a particular function?
Organ
Rank in order of simplicity: organism, organ, system, cell, tissue.
Cell Tissue Organ System Organism
Organs in nervous system?
Brain Spinal cord Eyes Muscles Ears Tongue Nose Nerves
Function of nervous system?
To detect changes (stimuli) in our environment
Organs in respiratory system?
Lungs Trachea Diaphragm Nose Mouth
Function of respiratory system?
To control breathing
Oxygen in, carbon dioxide out
Organs in circulatory system?
Veins
Arteries
Heart
Blood
Function of circulatory system?
To pump blood around the body to deliver nutrients and oxygen
Organs in the digestive system?
Stomach Oesophagus Anus Tongue Mouth Intestines
Function of digestive system?
To break down food into nutrients the body can use
Organs in muscular/skeletal system?
Muscles
Bones
Tendons
Ligaments
Function of muscular/skeletal system?
To give structure and movement
All living things need?
Oxygen
Oxygen in living things reacts with what in their what?
Food
Cells
Carbon dioxide is a what?
Waste gas
Equation for respiration?
Glucose + oxygen → carbon dioxide + water + energy
To carry out respiration living things need to get what?
Oxygen from the air
Living things need to get rid of what?
Carbon dioxide
High carbon dioxide will what?
Poison cells
Define gas exchange.
Process by which oxygen passes from air into body tissue and carbon dioxide leaves body tissue and enters air
How do insects exchange gases?
Gases pass through tiny holes in their exoskeleton which lead to a branch of hollow tubes
Why are alveoli surrounded by capillaries?
To uptake oxygen and transport oxygen in blood to cells in tissues
Type of gas exchange in birds?
Lungs
Type of gas exchange in sharks?
Gills
Type of gas exchange in lady birds?
Spiracles
Type of gas exchange in slugs?
Skin
Type of gas exchange in oysters?
Gills
Type of gas exchange in snakes?
Skin
Type of gas exchange in spiders?
Spiracles
Type of gas exchange in wombats and koalas?
Lungs
Explain solubility in hot and cold water.
Oxygen dissolves better in cold water
At what temperature do fish start to die of asphyxiation?
30 degrees
Explain inhalation.
Air take in through trachea (windpipe) into lungs
Oxygen passes into bloodstream
Define breathing.
Action of taking in and letting out air
Diaphragm is drawn what when air rushes into lungs?
Downward
Diaphragm does what as air is pushed out of lungs?
Relaxes into normal position
Air travels where when breathing in?
Mouth → trachea → bronchi → bronchioles → alveoli → capillaries
How do you test for carbon dioxide?
With the limewater test
What colour will limewater turn if carbon dioxide is present?
White
Label lungs.
Refer to year 9 biology national curriculum workbook (page 8)
Which lung has only 2 lobes?
Left lobe
Define bronchial tree?
The system of airways within the lungs which brings air from the trachea to lung’s alveoli
Define cardiac notch.
Indentation in left lung that provides room for heart
Define diaphragm.
Muscular membrane under lungs
Define larynx.
Muscular structure at top of trachea containing vocal chords
Define trachea.
Windpipe
Tube through which air travels from larynx to lungs
Define vital capacity.
Vital capacity is the volume of air that your lungs can hold
Describe what a lung looks like.
The lungs are a light pinky colour
Describe what lungs feel like.
Light
Smooth and slippery
Easy to cut except the trachea which is much harder
What is the formula equation for respiration?
C6H12O6 + O2 → CO2 + H2O + energy
Can all food be said to contain nutrients?
Yes, otherwise we wouldn’t eat it
An average 13 yr old boy would require ? kJ per day?
10,500 kJ
An average 13 yr old girl would require ? kJ per day?
9,000 kJ
What functions does food have in the body?
Energy
Cell repair
Growth
How is cellular respiration like burning (combustion)?
It releases heat
Would you be using energy while sleeping?
Yes, heart beat, snoring, breathing
Would you need need more energy than your teacher for the day?
Yes because we are growing
Three important nutrients in food.
Lipids
Carbohydrates
Proteins
Three other useful nutrients in food.
Water
Vitamins
Minerals
Carbohydrates lipids and sometimes proteins may be broken down and what?
Oxidised
Define oxidised.
To release energy for daily needs (burnet)