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Friendly Bio. Ch 6

Vocabulary Terminology for Chapter 6 in Friendly Biology

Question or TermAnswer or Definition
The building or breaking down of molecules (carbohydrates, lipids, or proteins) are dependent upon the presence of enzymes
The enzymes are very dependent on pH environment
The symbol for pH, the lower case p and upper case H stand for percent & Hydrogen
Substances that are Hydrogen rich, or want to lose Hydrogen are Acids
Substances that are Hyrogen poor, or want to gain Hydrogen are Bases
The pH scale tells us the relative strength of Acids & Bases
The pH scale is also known as a logarithmic scale
The pH scale relative strengths are multiplied by how much with each step 10 times
pH 2 acid is how many times stronger than a pH 4 acid 10X10=100 times stronger
On the pH scale, acids are less than 7
On the pH scale, bases are greater than 7
Acids taste sour
Bases taste bitter
gastric or stomach secretions are considered very strong, what pH value would you expect 0-1
Vinegar is weak acid but still effective in preserving foods, why is this bacteria that causes spoilage con not survive at the low ph
Blood pH is 7.4
Milk pH is 6.3-6.6
Pancreatic secretions 8.1
Cerebrospinal Fluid 7.5
Urine 6
pH can be measured by special powdered colored strips of paper and they are known as Litmus paper
The red litmus paper turns blue in the presence of a(n) base
The blue litmus paper turns red in the presence of a(n) acid
Created by: CDM2KK