BTEC Level 3 National Applied Science, Student Book
Unit 1 consists of Physics, Chemistry and Biology assignments. This is the Physics assignment for which I received Distinction. At the end of my first year I got D*D* as my final grade.
BTEC Applied Science Unit 2, Assignment D (FULL ASSIGNMENT)
BTEC Applied Science Unit 2, Assignment C (FULL ASSIGNMENT)
BTEC Applied Science Unit 2, Assignment B (FULL ASSIGNMENT)
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BTEC
PEARSON (PEARSON)
Applied Science 2010 QCF
Unit 1 - Fundamentals of Science
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Task 1
Different types of Energy
1. The energy transfers that take place in Metabolism
Metabolism is a term that is used to describe all chemical reactions involved in
maintaining the living state of the cells and the organism. Metabolism transfers
the food that we eat into the energy which we need for our daily life that from
moving, lifting and thinking. Specific nutrients in the body control the chemical
reactions of metabolism, and each chemical reaction is combined with other
body functions. For instance, when people eat they take in energy (in the form
of sugar), along with other vital cell-building chemicals. The body's next step is
to break the sugar down so that the energy released can be distributed to, and
used as fuel by, the body's cells. After food is eaten, molecules in the digestive
system called enzymes break proteins down into amino acids, fats into fatty
acids, and carbohydrates into simple sugars e.g., glucose and to sugar, both
amino acids and fatty acids can be used as energy sources by the body when
needed. These compounds are absorbed into the blood, which transports
them to the cells. After they enter the cells, other enzymes act to speed up or
regulate the chemical reactions involved with metabolizing these compounds.
During these processes, the energy from these compounds can be released for
use by the body or stored in body tissues, especially the liver, muscles, and
body fat.
The energy transfers that take place are as below:
Chemical energy which is in the food, kinetic energy for movement and heat
energy to maintain normal body temperature.
The input energy is chemical energy.
Output energy is kinetic energy.
Useful energy is chemical energy and heat energy.
Wasteful energy is heat energy because when the sun gets hot, the person will
sweat and lose energy the body will be cold.
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