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Bio Lab 131
Exercise 7: Biomolecules
39
Biology
Undergraduate 1
10/10/2011

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Term
Metabolism
Definition
composed of all of the chemical reactions that occur in the organism
Term
Anabolic
Definition
take simple molecules and build complex molecules
Term
catabolic
Definition
large, complex molecules are broken down into simple molecules
Term
Organic molecules
Definition

1. Nucleic acids

2. proteins

3. carbs

4. lipids

Term
Negative control
Definition
test component that does not have the biomolecule for which you are testing (deionized water)
Term
Positive control
Definition
100% confirmed that test subject contains molecule for which you are testing
Term
Macromolecules
Definition
Molecules large in size often formed by joining smaller molecules together
Term
monomers
Definition
small molecules
Term
poymers
Definition
long chains of monomers, composed of identical or similar molecules strung togther
Term
Carbohydrate
Definition

always contains carbon, oxygen, and hydrogen.

 

Term
Monosaccharides
Definition
monomers that build carbs-simple sugars
Term
monosaccharide that is the Most important energy source and fuels cellular respiration
Definition
glucose
Term
Disaccharide
Definition
2 monosaccharides together
Term
polysaccharide
Definition
long chain of monosaccharides
Term
Common polysaccharide
Definition
Starch
Term
Most abundant organic compound
Definition
cellulose
Term
Test for simple surgars
Definition
Benedict's Test
Term

Test for complex carbs

 

Definition
Iodine/Lugol's Test
Term
Test for protein
Definition
Biuret Test
Term
Proteins
Definition
polymer made from amino acid monomers
Term
Test for lipids
Definition
Paper Towel Test
Term
Lipids are ____________ in water
Definition
insoluble
Term
Fat
Definition

large molecule made of glycerol and fatty acids

AKA triglycerides

Term
Unsaturated fats are _________ at room temperature and are found in __________ products
Definition

liquid

plant

Term
Saturated fats are ____________ at room temperature and are commonly found in _________ products.
Definition

solid

animal

Term
Cholesterol is a _______________.
Definition
Steroid/lipid
Term
Assay
Definition
different ways to measure different types of molecules
Term
qualitative measurements
Definition
measurements of the types of molecules (qualities)
Term
Quantitative measurements
Definition
numerical values
Term
Benedict's test reacts with
Definition

simple sugars

-glucose, fructose, caltose, lactose

Term
Lugol's test is the test for
Definition
starch
Term
Benedict's color scale
Definition

LITTLE---------------------------------LOTS

gray, orange, reddish/brown, precipitate/creamy

Term
Lugol's Iodine test color change
Definition
Yellow-brown to blue-black in the presence of starch
Term
Biuret is the test for
Definition
Protein
Term
Biuret color change
Definition
Light blue to purple.  More intense purple means more protein
Term

When testing  for protein,

A) what test would you use?

B) What would the test results be for-

1. Gelatin

2. Apple Juice

Definition

A) Biuret Test

B) 1-Turns Deep Purple

2-Greenish-yellow

Term

When testing  for starch,

A) what test would you use?

B) What would the test results be for-

1. Cream

2. Potato Flakes

Definition

A. Lugol's Iodine

B) 1. Yellow-orange

2. Black

Term

When testing  for Sugars,

A) what test would you use?

B) What would the test results be for-

1. Gelatin

2. Apple Juice

3. Egg White

Definition

A) Benedict's

B) 1. Deep Blue/purple

2. Orange

3. Gray (means slight amounts)

Term

When testing  for Lipids,

A) what test would you use?

B) What would the test results be for-

1. Cream

2. Apple Juice

3. Tofu

Definition

A) Paper towel

1. spot

2. no spot

3. slight spot

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