Wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Ainsley - Biochem lab (Isang bagsakan Midterms)

Total questions: 22

Worksheet time: 11mins

Name
Class
Date
1.

Lipids are made of what monomers?

a)

Fatty acids

b)

Amino acids

c)

Nucleic acids

d)

Sulfuric acid

2.

Basic building blocks of Proteins:

a)

Fatty acids

b)

Amino acids

c)

Nucleic acids

d)

Sulfuric acid

3.

Composition of a phospholipid bilayer:

a)

Hydrophobic polar head

b)

Hydrophilic nonpolar tails

c)

Hydrophobic nonpolar head

d)

Hydrophilic polar tails

4.

Functions of Lipids are as follows:

a)

Store energy

b)

Signal cells

c)

Form cell membrane

d)

Store gene information

5.

Properties of Saturated fats include, except:

a)

Pack together closely

b)

Solid at room temperature

c)

Found in animal products

d)

Contain double carbon bonds

6.

Example of a saturated fat:

a)

Butter

b)

Peanut butter

c)

Cheese

d)

Tallow

7.

In what backbone Triglycerides are being attached?

a)

Glycerol

b)

Glycerin

c)

Glucose

d)

Animal fat

8.

What reagent was used for the Test for Unsaturation of Lipids?

a)

Povidone iodine

b)

Hanus iodine

c)

Iodide solution

d)

Iodoform

9.

What is the reagent used for Ninhydrin test?

a)

H2SO4

b)

Ninhydrin solution

c)

NaOH

d)

Nitric acid

10.

Macromolecule that catalyze biochemical reactions

a)

Enzymes

b)

Proteins

c)

Lipids

d)

Carbohydrates

11.

Optimal pH for most enzymes:

a)

7

b)

6.4

c)

7.4

d)

5

12.

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.

a)

Only I is correct

b)

Only II is correct

c)

Both are correct

d)

Both are incorrect

13.

Two factors that may destroy enzymatic tissues and cells.

a)

pH

b)

pressure

c)

gravity

d)

temperature

14.

Substrate concentration & Rate of reaction:

a)

Directly proportional

b)

Inversely proportional

c)

No effect/ Either

15.

Temperature & Enzyme activity:

a)

Directly proportional

b)

Inversely proportional

c)

No effect/ Either

16.

Effect of PH & Enzyme activity:

a)

Directly proportional

b)

Inversely proportional

c)

No effect/ Either

17.

Reaction velocity & Enzyme concentration:

a)

Directly proportional

b)

Inversely proportional

c)

No effect/ Either

18.

Specific test & result for the identification of Protein (2 answers):

a)

Biuret

b)

Ninhydring

c)

Purple solution

d)

Yellow complex

19.

Specific test & result for Phenolic compounds (2 answers):

a)

Millon's

b)

Ninhydring

c)

Red precipitate

d)

Yellow complex

20.

Specific test & result Presence of Cysteine (2 answers):

a)

Lead sulfide

b)

Ninhydring

c)

Brown precipitate

d)

Yellow complex

21.

Odd one out:

a)

Zn

b)

Ca

c)

Cl

d)

Co

22.

Which of the following are inorganic metallic cations?

a)

Mg

b)

Mn

c)

Au

d)

Ag