Biochemistry Practice Questions

Biochemistry is life science. It tells about the body's:

• Mechanism and function

• Needs and mechanism

• Needs and functions

• Functions and regeneration

• Mechanism and regeneration

The periodic table of elements shows vertical rows of elements with similarities in molecular binding. Thus we can find in nature compound with O occupying the same position in a similar molecular structure replacing ...

• H

• S

• N

• Na

• K

Two natural occurring molecules can differ in just one element occupying similar structural position. When O of serine is replaced by another element of the same vertical row in the periodic table, the molecule is named ...

• Cysteine

• Alanine

• Glycine

• Lysine

• Valine

The type of chemical bond between Na+ and Cl- in NaCl is known as ...

• Covalent

• Physical

• Ionic

• Ester

• Ether

To maintain ionic strength of the cell, K+ entering the cell must be compensated by the outflow of ...

• H+

• Cl-

• OH-

• Na+

• I-

Shared electrons between atoms can be found in:

• CaCl2

• NaCl

• NaNO3

• NaOH

• H2

An organic acid is typically identified by the chemical group:

• Hydroxyl

• Carboxyl

• Carbonyl

• Keto

• Sulfhydryl

Fat is chemically a triacylglycerol. This means that fat molecule contains 3 bonds of ...

• Ester

• Ether

• Peptide

• Glyceride

• Nucleotide

An alcohol is identified by the chemical group ...

• Keto

• Amino

• Hydroxyl

• Carboxyl

• Ethyl

Ether used in anesthesia is a dietylether, meaning that the molecule is made up of 2 ethyl groups connected by ...

• –C–

• –S–

• –O–

• –NH–

• –S–S–