WorksheetsAinsley - Biochem lab (Isang bagsakan Midterms)
Total questions: 22
Worksheet time: 11mins
Lipids are made of what monomers?
Fatty acids
Amino acids
Nucleic acids
Sulfuric acid
Basic building blocks of Proteins:
Fatty acids
Amino acids
Nucleic acids
Sulfuric acid
Composition of a phospholipid bilayer:
Hydrophobic polar head
Hydrophilic nonpolar tails
Hydrophobic nonpolar head
Hydrophilic polar tails
Functions of Lipids are as follows:
Store energy
Signal cells
Form cell membrane
Store gene information
Properties of Saturated fats include, except:
Pack together closely
Solid at room temperature
Found in animal products
Contain double carbon bonds
Example of a saturated fat:
Butter
Peanut butter
Cheese
Tallow
In what backbone Triglycerides are being attached?
Glycerol
Glycerin
Glucose
Animal fat
What reagent was used for the Test for Unsaturation of Lipids?
Povidone iodine
Hanus iodine
Iodide solution
Iodoform
What is the reagent used for Ninhydrin test?
H2SO4
Ninhydrin solution
NaOH
Nitric acid
Macromolecule that catalyze biochemical reactions
Enzymes
Proteins
Lipids
Carbohydrates
Optimal pH for most enzymes:
7
6.4
7.4
5
I. Lock & Key Model explains that substrate fits precisely into the active site.
II. Induced Fit Theory explains that enzymes, when binding to a substrate can change in
conformation to fit the enzyme.
Only I is correct
Only II is correct
Both are correct
Both are incorrect
Two factors that may destroy enzymatic tissues and cells.
pH
pressure
gravity
temperature
Substrate concentration & Rate of reaction:
Directly proportional
Inversely proportional
No effect/ Either
Temperature & Enzyme activity:
Directly proportional
Inversely proportional
No effect/ Either
Effect of PH & Enzyme activity:
Directly proportional
Inversely proportional
No effect/ Either
Reaction velocity & Enzyme concentration:
Directly proportional
Inversely proportional
No effect/ Either
Specific test & result for the identification of Protein (2 answers):
Biuret
Ninhydring
Purple solution
Yellow complex
Specific test & result for Phenolic compounds (2 answers):
Millon's
Ninhydring
Red precipitate
Yellow complex
Specific test & result Presence of Cysteine (2 answers):
Lead sulfide
Ninhydring
Brown precipitate
Yellow complex
Odd one out:
Zn
Ca
Cl
Co
Which of the following are inorganic metallic cations?
Mg
Mn
Au
Ag
