Respiration Flashcards
Aerobic Respiration Equation
Glucose + oxygen ——-> Carbon Dioxide + water (+ energy)
C6H12O6 +O2 ——-> 6CO2 + 6H2O + 2830 J of energy
What is Mitochondria and what does it do?
Mitochondria in your cells is the place where most of the chemical reactions for respiration take place.
They are tiny rod shaped parts (organelles) that are found in almost all plant and animal cells.
What does the number of Mitochondria show you?
It shows how active the cell is.
What adaptations do Mitochondria have to help in respiration?
They are tiny rod shaped parts (organelles) that are found in almost all plant and animal cells. They have a folded inner membrane (covered in enzymes) providing a larger surface area for the enzymes involved in respiration.
What are the waste products in aerobic respiration?
Carbon Dioxide and water are produced as waste products.
Aerobic respiration Info
Important enzyme-controlled process in living things.
During aerobic respiration, glucose reacts with oxygen. Energy is released for your cells to use. It’s aerobic respiration because it uses oxygen.
What are 3 reasons for respiration?
Energy released is used to build large molecules from smaller ones to make new cell material.
Energy is used to make muscles contract.
In mammals and birds, it enables them to maintain a steady body temperature.
How much energy on average do teenage boys or girls need?
Boys need 11510kJ per day.
Girls need 8830kJ per day.
Girls need less because they tend to be smaller and because boys usually have more muscle cells so they need more mitochondria demanding fuel for aerobic respiration.
How can we show the presence of carbon dioxide in our expired (breathed out) air?
By blowing through a solution of lime water.
It should turn cloudy if oxygen in present
Why do muscles contain many Mitochondria?
Muscle fibres need a lot of energy to contract so carry a lot of mitochondria to supply energy needed by aerobic respiration.
Muscle tissue is made up of protein fibres. These are supplied with energy from respiration.
What is Aerobic Respiration?
Breaking down food using oxygen to release energy for the cells.
What is your body’s response to exercise?
When you exercise, your muscles contract harder and faster so they require more energy for the protein fibres within each cell to move. To produce this extra energy, respiration must increase and extra glucose and oxygen must be supplied to the muscles and extra carbon dioxide must also be removed. Therefore, more blood must be supplied to the muscle cells
Why do muscles need a lot of energy?
They move you around and help support your body against gravity. Your heart is made up of muscles and pumps blood around your body. The movement of gut along your gut depends on muscles too.
What are muscles?
Muscles are muscle fibres are usually in big blocks or groups, which contract to cause movement. They then relax, which allows other muscles to work.
What do muscles store glucose as and why?
Glucose is stored as the carbohydrate Glycogen. This can be rapidly converted back to glucose during exercise. The glucose is used in aerobic respiration.
