Lesson 3: The chemical basis of life

Question 1

matter is composed of smallest particle called what?

Answer 1

Atom

Question 2

It is composed of a smallest
particle called atom.

Atom builds an element and a
compound.

Answer 2

Matter

Question 3

These are substances
that cannot be broken
down into its constituent
by ordinary chemical
means.

Answer 3

ELEMENT

Question 4

These are substances
made of two or more
elements that can be
separated through
chemical techniques.

Answer 4

COMPOUND

Question 5

These are compounds
which do not contain
carbon

Answer 5

INORGANIC COMPOUND

Question 6

there are carbon-containing compound
that are usually large
and are covalently
bonded. These are
present in plants,
animals, and humans

Answer 6

ORGANIC COMPOUND

Question 7

are organic molecules produced by a living
organism which performs an essential part for all life processes.

Answer 7

BIOMOLECULES

Question 8

These are energy-giving
organic compound made up of
Carbon, Hydrogen and Oxygen
in 1:2:1 ratio

Answer 8

CARBOHYDRATES

Question 9

what does saccharide means?

Answer 9

sugar

Question 9

what does monomer means

Answer 9

building blocks of biomolecule

Question 10

is a
polysaccharide
found in insect
outer skeleton.

Answer 10

Chitin

Question 11

is a
polysaccharide
found in bacterial
cell wall.

Answer 11

Peptidoglycan

Question 12

is a
polysaccharide
found in plant’s
cell wall.

Answer 12

Cellulose

Question 13

stored polysaccharides in plants made entirely
of glucose molecules.

Answer 13

Starch

Question 14

stored polysaccharides in animal body used
for emergency purposes or during when the body lacks a
supply of glucose molecules.

Answer 14

Glycogen

Question 15

Act as a stored energy
in the body and forms
essential structure in
cell’s permeability.

Answer 15

LIPIDS

Question 16

found in
chocolate and meat are solid
at room temperature and
can increase the risk of
arteriosclerosis.

Answer 16

Saturated fats

Question 16

are the fats from the
food we eat that is primarily used
as stored energy during which
the body is not fueled by
carbohydrates.

Answer 16

Triglycerides

Question 17

found in
fish, egg, avocado and
coconut oil have less
tendency to solidify at room
temperature.

Answer 17

Unsaturated fats

Question 18

is composed
of two fatty acids attached
to a glycerol and a
phosphate group.

Answer 18

Phospholipids

Question 19

are composed of
carbon skeleton
consisting of four fused
ring.

It can alter the membrane
fluidity and function as
signaling molecule

Answer 19

Steroids

Question 20

Essential in tissue
structure and act as a
building blocks of tissues
and organs.

Answer 20

PROTEIN

Question 21

Protein can repair
damaged tissues. It is
composed of _____ _____
that are chained together
in a peptide bond.

Answer 21

Amino acids

Question 22

are proteins that
act as catalyst in
biochemical reaction.

Answer 22

Enzymes

Question 23

are protein known
to stimulate biological
activity.

Answer 23

Hormones

Question 24

covers
body structure. It can be
found in hair, nails and skin.

Answer 24

Structural protein

Question 25

can
be seen in the body as
stored energy.

Answer 25

Energy-storing protein

Question 26

transport
nutrients across cell
membranes.

Answer 26

Transport protein

Question 27

are protein
responsible for immunity
against illnesses.

Answer 27

Antibodies

Question 28

are
protein that are fibrous and
involved in muscle
contraction.

Answer 28

Contractile protein

Question 30

These are molecules of life
that direct and store
information for cellular
growth and reproduction.

Answer 30

NUCLEIC ACID