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9 Cards in this Set

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  • Back
When does free energy become available to organisms? What is free energy?
free energy is energy available to do work....ask how it becomes avbl
Where are fats digested? The single place! Where is cellulose digested?
fats are digested in the small intestine....cellulose is not digestable by human means
Entropy—ashes from a fire—compare energy and entropy
more energy the higher entropy...the level of disorder in a system...ashes have less entropy and more energy than before when were log
What is an enzyme, catalyst, substrate and activation energy?
enzyme is a protein that helps to speed up chemical reactions, cataylist is an example (ask about this)
activation energy is energy needed to initate or start a chemical reaction....substrate - Material or substance acted upon by an enzyme.
Why is peristalsis imperative to digestion?
peristaliss is the process of contraction and expansion by which food is moved through your intestines and into your bowels
What is the difference between a ribosome and a ribozyme?
ribosome is an organelle consisting of two subunits and functioning as the site of protein synthesis......ribozyme is an enzymatic RNA molecule, RNA that performs a catalytic function
How do organisms store energy----heat or chemical?
ASK
Put the parts of the digestive system in correct order:Stomach, Large intestine Small intestine, Oral cavity, Epiglottis, Anus, Esophagus
oral cavity --- epligottis, esophagus, stomach, small intestine, large intestine, anus
Why are chemical reactions important for living cells?
ASK