Through the process
of cellular respiration
, the energy in food is converted into energy that can be used by the body’s cells. During cellular respiration, glucose and oxygen are converted into carbon dioxide and water, and the energy is transferred to ATP.
What break down of food into energy?
Our bodies digest the food we eat by mixing it with fluids (acids and enzymes) in the stomach. When the stomach digests food, the carbohydrate (
sugars and starches
) in the food breaks down into another type of sugar, called glucose.
What do cells use to break down food molecules?
Autotrophs and heterotrophs do
cellular respiration
to break down food to transfer the energy from food to ATP. … The first two, glycolysis and the Krebs cycle, break down food molecules. The third pathway, oxidative phosphorylation, transfers the energy from the food molecules to ATP.
What is it called when cells break down food?
Cellular respiration
, the process by which organisms combine oxygen with foodstuff molecules, diverting the chemical energy in these substances into life-sustaining activities and discarding, as waste products, carbon dioxide and water.
Where are food molecules broken down?
Digestion is the process where the large molecules in the food that we eat are broken down into smaller ones that we can use for energy or as building blocks. This is done in the digestive system by enzymes found in saliva, in stomach acid, in
the small intestine
, and in the large intestine.
What is the breakdown of food without using oxygen?
If the food is broken down with the use of oxygen, it is called aerobic respiration. If the breakdown occurs without the use of oxygen, the respiration is called
anaerobic respiration
.
What is the source of instant energy for living cells?
Solution 8 :
Glucose
is a simple sugar which is the primary source of energy in living organisms. In the cells, glucose is broken down to release energy.
What is the main source of energy for cells?
In fact,
the Sun
is the ultimate source of energy for almost all cells, because photosynthetic prokaryotes, algae, and plant cells harness solar energy and use it to make the complex organic food molecules that other cells rely on for the energy required to sustain growth, metabolism, and reproduction (Figure 1).
How does the food we eat turn into energy?
Through the process of cellular respiration
, the energy in food is converted into energy that can be used by the body’s cells. During cellular respiration, glucose and oxygen are converted into carbon dioxide and water, and the energy is transferred to ATP.
What transports proteins in a cell?
The Golgi apparatus
transports and modifies proteins in eukaryotic cells. … The Golgi apparatus is the central organelle mediating protein and lipid transport within the eukaryotic cell.
Why do large molecules need to be broken down?
The large molecules found in intact food cannot pass through the cell membranes. Food needs to be broken into smaller particles so
that animals can harness the nutrients and organic molecules
.
What process is common to all living cells?
Consider:
Glycolysis
is a process common to all living organisms and will occur in the presence or absence of oxygen.
How is food broken down in the body?
As food passes through the GI tract,
it mixes with digestive juices
, causing large molecules of food to break down into smaller molecules. The body then absorbs these smaller molecules through the walls of the small intestine into the bloodstream, which delivers them to the rest of the body.
What happens to the molecules in the food?
The small intestine absorbs most digested food molecules
, as well as water and minerals, and passes them on to other parts of the body for storage or further chemical change. Specialized cells help absorbed materials cross the intestinal lining into the bloodstream.
How are molecules broken down?
Chemical digestion
Mechanical digestion can only break up the food particles into smaller pieces. A chemical digestion process called enzymatic hydrolysis can break the bonds holding the
molecular
‘building blocks’ within the food together. For example, proteins are broken down into their ‘building block’ amino acids.
What kind of environment where oxygen is not used?
Anaerobic respiration
is a type of respiration where oxygen is not used; instead, organic or inorganic molecules are used as final electron acceptors.
