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Why most food esten by humans must be digested before they can be used by the body?
Wiki User
∙ 9y ago
Food must be digested before it can be used by the human body. This is due to the fact that food molecules are too big for the body to do anything with, so the body requires chemical and mechanical digestion to pull out the nutrients inside the food. Anything left over after the nutrients are used up is expelled from the body via the excretory system.
Wiki User
∙ 9y ago
Wiki User
∙ 13y agoBecause undigested molecules are too big to fit through the tiny gaps in a cell wall.
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What must happen to a tuna sandwich before a body cells can use it?
It must be consumed and digested.
Alcohol does not need to be digested in order to be absorbed by the body?
That's correct.
What is the mouth used for in the digestive system?
Saliva in the mouth, produced by chewing, breaks down sugars before food even really enters the body. Chewing breaks the food into smaller pieces so it can be digested easier
Humans are born with how many kidneys in there body?
Human body has two kidneys
How many body parts do humans have?
you have about 5,000 and beyond more body parts in youre body
Are fibers digested by humans?
depends on the fiber.... what kind of fiber dear?
Where in an insect's body is food temporarily stored and digested before moving on to the gizzard?
crop
Where In an insects body is food temporarily stored and digested before moving to the gizzard?
crop
Where in an insect's body is food temporarily and stored and digested before moving on to the gizzard?
crop
Is food being digested and used to regulate body temperature A conversion of chemical energy to thermal energy?
yes because the rainbow dancing unicorn burns the inside of a humans body when food is digested so there is a conversion from the chemical to thermal energy.
What must happen to a tuna sandwich before a body cells can use it?
It must be consumed and digested.
What glucose polymers cannot be digested by humans?
cellulose can not be digested by humans..because in human body there is no beta 1-4 glucosidase present.these beta glucosidase cleaves or degrade the glucosidic bond. though termites and cows can digest it and some symbiotic bacteria can digest it.
What does the body break digested protein into?
The body breaks digested proteins into amino acids
Which of the following cannot be digested by humans-sucrose maltose cellulose or fructose?
Cellulose cannot be digested by humans.Cellulosecellulosehumans cannot digest cellulosecelluloseCelluloseCellulose (aka Fiber) can not be digested by humans because, we don't have the bacteria needed to break down cellulose. Sucrose, Maltose, and Fructose are all disaccharides (carbohydrates/sugars) and are all able to be broken down to glucose in the body.
As a direct result of the life process called celluar respiration in humans?
Energy is released from digested food within the cells
What is the system in humans that transports the digested food to all the cellss in the body?
The digestive system digests the food, then the nutrients are circulated through the bloodstream.
What happens when food gets digested in your body?
When food gets digested in our body, energy is released after its breakdown.
