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WorksheetsTeam Activity Module 2
Total questions: 168
Worksheet time: 56mins
Name
Class
Date
1.
The inhibition in a noncompetetive reaction
a)
binds simultaneously with substrate other than the active site
b)
competes with active site
c)
increases rate of the reaction
2.
The order and sequence of amino acid in a polypeptide determines what protein structure?
a)
primary
b)
secondary
c)
tertiary
d)
quarternary
3.
Amino acids that cannot be synthesized in the organism are called
a)
alpha amino acids
b)
essential amino acid
c)
standard amino acid
d)
non-essential amino acid
4.
Which hormone regulates the level of blood sodium?
a)
cortisone
b)
corticoseroid
c)
aldosterone
d)
sterol
5.
It is a precursor of vitamin A
a)
opium
b)
retinal
c)
retinol
d)
B-carotene
6.
Which of the following is a precursor of vitamin D?
a)
aldosterone
b)
linoleic acid
c)
cholesterol
d)
prostaglandin
7.
Which of these class of enzymes introduces a double bond by the removal of hydrogen
a)
dehyrogenase
b)
dehydroxylase
c)
decarboxylase
d)
lipase
8.
The ionic property of amino acid is exhibited by its
a)
positive charged groups
b)
COO group
c)
NH2 group
d)
zwitter ion
9.
All of the following are simple proteins except:
a)
albumins
b)
glutelns
c)
globulins
d)
glycoproteins
10.
The simplest monosaccharide is
a)
arabinose
b)
erythrose
c)
glyceraldehyde
d)
starch
11.
Denaturation of protein is a result of
a)
breaking of bonds
b)
cleavage of peptide bonds
c)
h-bond formation
d)
none of the choices
12.
Competitive inhibition is a ______reaction
a)
reversible
b)
irreversible
c)
pH and temp dependent
d)
none of the choices
13.
In the Seliwanoff's testm the reaction of resorcinol and acid on the sugar forms
a)
hydrazine
b)
hydrxymethyl furfural
c)
purine
d)
pyranose
14.
High concentration of neutral salts causes the precipitation of proteins. This is called ___
a)
salting out
b)
coagulation
c)
both of the choices
d)
none of the choices
15.
It is the type of enzyme inhibition reaction whereby the inhibition competes with the substrate at the active site.
a)
competitive
b)
non-competitive
c)
reversible
d)
incomplete
16.
The following are waxes except:
a)
beeswax
b)
spermacetti
c)
lanolin
d)
bile acids
17.
The inactive form of enzymes are called
a)
apoenzymes
b)
cofactor
c)
zymogens
d)
none of the choices
18.
Which of the following amino acids has no alpha amino group
a)
proline
b)
hydroproline
c)
both of the choices
d)
none of the choices
19.
An enzyme is a substance which
a)
convert heat to energy
b)
act as catalyst
c)
change chemically in reaction
d)
is not specific in reaction
20.
Milk curding enzyme present in gastric juice of infants
a)
maltase
b)
pepsin
c)
trypsin
d)
renin
21.
Carbohydrates are _______
a)
hemiacetals
b)
polyhydroxyaldehydes or polyhydroxyketone
c)
polyhydroxy acids
d)
polymers of amino acids
22.
Insulin is usually classified as:
a)
carbohydrates
b)
enzyme
c)
hormone
d)
protein
23.
What amount of glucose is present in the human blood
a)
5-6 g in 100mL blood
b)
60 to 90 mg in 100mL
c)
2% of total human body weight
d)
none of the choices
24.
It is the organelle which serves as the site of the electron transport chain.
a)
lysosome
b)
mitochondria
c)
ribosome
d)
nucleus
25.
The end product of the hydrolysis of glycogen is:
a)
arabinose
b)
galactose
c)
glucose
d)
all of the choices
26.
Iodine test is a reaction which maybe used to identify carbohydrates.
a)
presence of amylose portion
b)
this maybe attributed to the presence of the free aldehyde group
c)
the presence of alcohol make the carbohydrate sample blue violet
d)
presence of glucose
27.
Benedict's reagent yield positive result to ______.
a)
reducing sugars
b)
monosaccharides only
c)
sucrose
d)
polysaccharides
28.
Hypertonic solutions will cause the cell to _______.
a)
burst
b)
shrink
c)
swell
d)
undergo hemolysis
29.
Rancidity of fats maybe due to:
a)
condensation
b)
hydrogenation
c)
oxidation
d)
saponification
30.
The deficiency of this hormone causes diabetes mellitus:
a)
glucagon
b)
insulin
c)
testosterone
d)
progesterone
31.
The active proteolytic enzyme in gastric juice is:
a)
catalase
b)
pepsin
c)
tyrpsin
d)
maltase
32.
The side of oxidation reaction in electron transport chain is in the _____.
a)
mitochondrion
b)
nucleus
c)
ribosome
d)
golgi bodies
33.
Protein digestion starts in the ____.
a)
mouth
b)
stomach
c)
intestine
d)
pancreas
34.
The conversion of an amino acid to sugar is:
a)
glycolysis
b)
glycogenesis
c)
glycogenolysis
d)
gluconeogenesis
35.
Which of the following is not an amino acid?
a)
choline
b)
leucine
c)
valine
d)
glycine
36.
When trypsinogen is converted into trypsin, the enzyme is called:
a)
amylase
b)
enterokinase
c)
pepsin
d)
zymogen
37.
The protein part of the enzyme molecule is the:
a)
apoenzymes
b)
coenzyme
c)
cofactor
d)
holoenzyme
38.
Optimum temperature for enzyme activity in the body:
a)
10C
b)
37C
c)
40C
d)
60C
39.
Glucose is stored in the liver, as:
a)
fructose
b)
galactose
c)
lactose
d)
glycogen
40.
The enzyme conformation adapts to the incoming substrate in
a)
induced fit theory
b)
competitve inhibition
c)
non-competitive inhibition
d)
lock and key theory
41.
The process of converting glucose into glycogen is called
a)
glycolysis
b)
glycogenesis
c)
gluconeogenesis
d)
glycogenolysis
42.
All are pyrimidine except:
a)
guanine
b)
cytosine
c)
uracil
d)
thymine
43.
Glucose, amino acid and fatty acid enter the citric acid cycle by their conversion into:
a)
acetyl CoA
b)
pyruvate
c)
acetoacetyl CoA
d)
palmitic acid
44.
A hormone which stimulates glycogenesis:
a)
insulin
b)
glucagon
c)
epinephine
d)
vasopressin
45.
These are chemicals that are extracted from organism such as bacteria and can inhibit growth or destroy other microorganisms
a)
vitamins
b)
enzyme
c)
hormone
d)
antibiotic
46.
The gland or tissue that regulates the blood glucose level
a)
pancreas
b)
adrenal
c)
parathyroid
d)
thyroid
47.
Which vitamin is formed in the body by exposure to ultraviolet irradiation or sunlight
a)
vitamin A
b)
Vitamin B complex
c)
Vitamin C
d)
Vitamin D
48.
Excess vit A & D is stored in the body, but exccess vit. C and B is readily excreted. What property show this?
a)
Vitamin A & D are fat soluble
b)
Vitamin B & C are water soluble
c)
Both of the choices
d)
none of the choices
49.
It is the entire genetic make up of an organism.
a)
gene
b)
anticodon
c)
codon
d)
mutation
50.
The vitamin which is used in the prevention of degenerative changes in the central nervous system
a)
Vitamin A
b)
Vitamin C
c)
Vitamin B complex
d)
Vitamin D
51.
It is a model whichh best explains the enzyme-substrate action
a)
lock and key
b)
molecular
c)
VSEPR
d)
Kreb
52.
The activation of pepsinogen requires:
a)
HCl
b)
pepsin
c)
NaOH
d)
enterokinase
53.
DNA is primarily found in the _____.
a)
cytosol
b)
cell wall
c)
nucleus
d)
endoplasmic reticulum
54.
It is the enzyme which hydrolyzed starch to dextrin and maltose
a)
amylase
b)
catalase
c)
lactase
d)
pepsin
55.
A synthetic DNA is called
a)
gene
b)
recombinant DNA
c)
replicated DNA
d)
plasmid
56.
Hydrolyss of ATP is an
a)
energy requiring reaction
b)
energy producing reaction
c)
no energy is involved
d)
energy is absorbed
57.
Which of the following is a characteristics of lipid
a)
amphiphilic
b)
hydrophilic
c)
zwitterion
d)
hydrophobic
58.
It is a condition that results when sugar level is below normal
a)
hypoglycemia
b)
hyperglycemia
c)
ketonuria
d)
uremia
59.
An example of globular protein
a)
albumin
b)
collagen
c)
fibrin
d)
silk
60.
Complemenatary base pairs in the DNA double helix are bonded by
a)
H-bond
b)
ester bond
c)
vander waals
d)
dipole-dipole
61.
Which nitrogen base is not found in DNA
a)
uracil
b)
thymine
c)
cytosine
d)
guanine
62.
An organic cofactor in an enzyme
a)
both choices are correct
b)
vitamins
c)
coenzyme
d)
none of the choices
63.
At what stage of glucose oxidation is most of the energy produced?
a)
aerobic stage
b)
glycolysis
c)
glycogenesis
d)
glycogenolysis
64.
The best known building blocks of RNA and DNA are
a)
both choices are correct
b)
purines
c)
pyrimidines
d)
none of the choices
65.
It is responsible for the storage and transmission of genetic information
a)
DNA
b)
adenosine
c)
RNA
d)
nucleic acid
66.
Build up of urea in the kidney is called
a)
uremia
b)
ketonuria
c)
glycemia
d)
all of the choices
67.
The transfer of genetic information from DNA by the formation of RNA
a)
transcription
b)
translation
c)
transamination
d)
replication
68.
What is the end product of electron transport chain?
a)
oxygen
b)
water
c)
hydrogen
d)
carbon dioxide
69.
The energy producing reaction
a)
metabolic
b)
catabolic
c)
anabolic
d)
all of the choices
70.
It is the molecule that directs the activity of the cells
a)
RNA
b)
DNA
c)
nucleoproteins
d)
hormone
71.
The sugar involved in DNA
a)
ribose
b)
deoxyribose
c)
pentose
d)
xylose
72.
The common metabolic pathway is
a)
glycolysis
b)
Kreb's cycle
c)
beta oxidation
d)
gluconeogenesis
73.
Rosenheim's test is used to detect the presence of:
a)
ethanolamine
b)
choline
c)
cholesterol
d)
glycone moiety
74.
Detects the presence of alpha amino acids:
a)
Biuret
b)
Ninhydrin
c)
Molish
d)
Hopkins-cole
75.
The process of producing fats from acetyl Co-A is called
a)
glycolysis
b)
lipogenesis
c)
glycogenolysis
d)
gluconeogenesis
76.
The ff. test reagents to detect the presence of amino acids, execpt:
a)
Xanthoproteic
b)
Grignard's
c)
Millon-Nasse
d)
Sakaguchi
77.
The condition that lowers the pH of the blood due to starvation is called
a)
alkalosis
b)
acidosis
c)
hyperglycemia
d)
glycosuria
78.
The substance responsible for the emulsion of fats is
a)
HCl
b)
pepsin
c)
trypsin
d)
bile acids
79.
Hubl's solution is used to acertain degree of:
a)
saturation
b)
peroxidation
c)
acidity
d)
unsaturation
80.
IUPAC name of acrolein
a)
pentenal
b)
hexanel
c)
acetone
d)
propenal
81.
The positive indication for the presence of glycerol in acrolein test
a)
yellow colored solution
b)
black markings on filter paper
c)
play of colors
d)
silver mirror formed in the test tube
82.
Cerebrosides are positive in the ff. tests, except:
a)
Molisch
b)
Lassaigne's
c)
none of the choices
d)
Biuret
83.
Osmotic test is used to detect the presence of ______ in lipids:
a)
metals
b)
unstaurated groups
c)
glycerol
d)
prostate groups
84.
The most sensitive chemical test to detect the presence of cholesterol:
a)
Salkowski recation
b)
Formaldehyde-sulfuric acid
c)
Colorimetric spectrophotometry
d)
Liebermann-Buchard
85.
The following are phospholipds, except:
a)
Plasmalogen
b)
Lecithin
c)
Cephalin
d)
choline
86.
A mixed triglyceride contains:
a)
three similar fatty acids esterifies with glycerol
b)
two similar fatty acids esterified with glycerol
c)
all of the choices
d)
three different fatty acids estified with glycerol
87.
The central compound found in the structure of sphingolipids:
a)
glycerol
b)
ceramide
c)
phosphocholine
d)
sphingosine
88.
Lipid whose specific test is the Furter-Meyer test:
a)
tocopherol
b)
retinol
c)
sphingomyelin
d)
cerebroside
89.
Precipitate of ___indicates the presence of phospholipids in the lipid sample:
a)
ammonium phosphomolybdate
b)
phosphorous periodate
c)
phosphorous triiodide
d)
phospho-ammonium sulfate
90.
The following are glycolipids, except:
a)
phosphatides
b)
globosides
c)
gangliosides
d)
cerebrosides
91.
The parent compound of phospholipids:
a)
phosphatidic acid
b)
glycerol
c)
ethanolamine
d)
none of the choices
92.
A non-pentose sugar which is also positive for Tollen's phloroglucinol test:
a)
cellobiose
b)
galactose
c)
glucose
d)
fructose
93.
The reagent present in Molisch test which is responsible for the dehydration reaction:
a)
sulfuric acid
b)
sodium carbonate
c)
magnesium stearate
d)
NaOH
94.
ID test to detect the presence of glycogen:
a)
iodine
b)
phloroglucinol
c)
molisch
d)
seliwanoff
95.
The only sugar that readily forms insoluble osazone crystals:
a)
mannose
b)
lactose
c)
sucrose
d)
galactose
96.
The important structural material found in the exoskeletons of many lower animals:
a)
chitin
b)
chondroitin
c)
heparin
d)
hyaluronic acid
97.
Hydrolysis of osazones produce:
a)
ozones
b)
phenyhdrazones
c)
sugars
d)
none of the choices
98.
General term for a group of polysaccharides presnt in the primary cell wall:
a)
pectin
b)
xanthan
c)
mucilage
d)
carageenan
99.
Specific test for galactose, due to the formation of highly insoluble crystals:
a)
mucic acid
b)
phenylhdrazine test
c)
fermentation
d)
molisch
100.
Type of RNA which serves as template for the amino acid sequence being synthesized:
a)
mRNA
b)
tRNA
c)
rRNA
d)
none of the choices
101.
Plant acid isolated in crystal form from lemon by Scheele in 1784
a)
tartaric acid
b)
lactic acid
c)
nitric acid
d)
citric acid
102.
The characteristic bitter flavor of bee is due to
a)
burnt caramel
b)
barley
c)
rye
d)
lupulus
103.
Purified water soluble mixture of glycosides extracted from cascara
a)
cascaroside
b)
emodin
c)
rhamnoside
d)
casanthranol
104.
Animal used in the biological assay of digitalis for its potency
a)
cat
b)
rabbit
c)
horse
d)
pigeon
105.
A phytochemist who made a number of significant discoveries including codeine in 1832 and the isolation of narcotine
a)
Friedrich Serturner
b)
Joseph Caventou
c)
Paracelsus
d)
Pierre Robiquet
106.
A German pharmacist who isolated hyoscyamine in 1819 and with fellow pharmacist, Philip Geiger, collaborated in research to discover atropine in 1835
a)
Emil von Behring
b)
Joseph Pelletier
c)
Friedrich Serturner
d)
Rudolf Brandes
107.
Enzymes that hydrolyze a considerable number of glycosides
a)
invertase
b)
maltase
c)
lactase
d)
emulsin and myrosin
108.
known as the first broad-spectrum antibiotic discovered
a)
erythromycin
b)
penicillin
c)
streptomycin
d)
chloramphenicol
109.
it destroys red blood corpuscles by hemolysis and are toxic especially to cold-blooded animals
a)
anthraquinone glycoside
b)
flavonol glycoside
c)
cyanogenic glycoside
d)
saponin glycoside
110.
the following are stereoptenes except
a)
menthol
b)
camphor
c)
thymol
d)
eugenol
111.
the following are characteristic of volatile oils except
a)
they have odorous principles
b)
optically active
c)
they resinify
d)
miscible with water
112.
a type of distillation applied to plant material that is dried and not subject to injury by boiling
a)
dry distillation
b)
steam distilllation
c)
water and steam distillation
d)
water distillation
113.
known as alligator pear, its pulverized seeds can be used to treat rheumatism and neuralgia
a)
Arcangelista flava
b)
Nerium oleandrex
c)
Diptheryx odorata
d)
Persea americana
114.
the purified fatlike substance obtained from the wool of the sheep
a)
cetyl esters wax
b)
beeswax
c)
spermacetti
d)
lanolin
115.
scientific name of kintsay
a)
Vitex negundo
b)
Vetiveria zizanoides
c)
Quiscalis indica
d)
Apium graveolens
116.
Citral is an
a)
aldehyde volatile oil
b)
alcohol volatile oil
c)
ketone volatile oil
d)
hydrocarbon volatile oil
117.
active constituent of Capsicum frutescens
a)
capsaicin
b)
capsin
c)
capsicin
d)
capsaicin and capsin
118.
A drying agent used to purify essential oils
a)
anhyrdrous calcium sulfate
b)
anhydrous calcium carbonate
c)
calcium chloride
d)
all of the choices
119.
The following are tests for saponin glycosides except
a)
Barfoed's
b)
Hemolysis test
c)
Capillary test
d)
Froth test
120.
It is a purified carbohydrate product obtained from the inner rind of citrus fruits:
a)
pectin
b)
citric acid
c)
lactic acid
d)
tartaric acid
121.
following are monosaccharides except
a)
sucrose
b)
glucose
c)
fructose
d)
mannose
122.
type of extraction used in the preparation of tincture or fluidextracts
a)
percolation
b)
digestion
c)
infusion
d)
maceration
123.
A local source of cyanogenic glycosides is:
a)
Manihot esculenta
b)
Manihot cymbopogon
c)
Cynagenum esculenta
d)
Manihot esculentum
124.
resin which is used as a diaphoretic
a)
capsicum
b)
hashish
c)
pistachia
d)
ginger
125.
It contains the alkaloid called ditamine and is known as Australian quinine bark
a)
dita
b)
dawag
c)
dilaw
d)
tubang bakod
126.
technical term for solvent used during extraction:
a)
menstruum
b)
extract
c)
marc
d)
menstural
127.
It is one of the ingredients of the embalming material of the Egyptians
a)
myrrh
b)
tolu balsam
c)
benzoin
d)
peru balsam
128.
The official test animal employed in the standardization of mydriatic drugs such as atropine:
a)
cat
b)
horse
c)
dog
d)
rabbit
129.
It is used in the treatment of asthma by using the leaves and flowers as cigarettes
a)
talumpunay
b)
tanglad
c)
tubang bakod
d)
tinospora
130.
The element responsible for the basic pharmacological properties of alkaloids
a)
nitrogen
b)
oxygen
c)
phosphorous
d)
sulfur
131.
The botanical origin of motherwort or damong maria which can be used as insect repellant
a)
Alstonia macrophylla
b)
Artemisisa vulgaris
c)
Citrus aurantium
d)
Areca catechu
132.
The scientific name of makahiya or sensitive plant
a)
Moringa oleifera
b)
Mimosa pudica
c)
Tinospora rumphii
d)
Coleus scutellarodes
133.
A plant causing dermatitis
a)
Amanita phalloides
b)
Poison ivy
c)
Peanut
d)
Rafflesia
134.
Takip-kuhol contains bitter principle vellarin used as counter-irritant. Its scientific name is
a)
Datura metel
b)
Centella asiatica
c)
Hydnocarpus wightiana
d)
Hyptis suaveolenes
135.
Glycoside found in cassava
a)
hydrocyanic acid
b)
mannihoxotin
c)
cyanohydrine
d)
mandelonitrile
136.
An oleoresin used externally as counterirritant
a)
white pine
b)
turpentine
c)
balsam of peru
d)
tolu balsam
137.
It is known as Indian hemp or hashish
a)
myrrh
b)
cannabis
c)
copaiba
d)
asafetida
138.
is known as Ringworm bush or shrub, used to treat ringworm by using its leaves
a)
abutra
b)
akapulko
c)
ambal
d)
asafetida
139.
The botanical origin of bitter gourd
a)
Quiscalis indica
b)
Momordica charantia
c)
Averrhoa bilimibi
d)
Anoma reticulare
140.
Caffeine belongs to this class of alkaloids
a)
vinca alkaloids
b)
xanthine alkaloids
c)
cinchona alkaloids
d)
ergot alkaloids
141.
plant is used to wrap cooked rice for fragrance
a)
romero
b)
pandan
c)
kasubha
d)
palo maria
142.
Hallucinogenic agent derived from Cannabis sativa includes
a)
cannabidiol
b)
tetrahydrocannabinol
c)
scopolamiine
d)
emetine
143.
The official test animal employed to assay Curare alkaloids, since these animal manifest the head drop, indicative of muscle relaxation
a)
cat
b)
rabbit
c)
dog
d)
frog
144.
Intrinsic factor in pernicious anemia
a)
hemoglobin
b)
cyanocobalamin
c)
ferrous salt
d)
all of the choices
145.
It contains ocimene, eugenol and pinene and a decoction of this herb is for treatment of cough
a)
Bixa orellana
b)
Ocimum basilicum
c)
Ocimum zizanoides
d)
Foeniculum vulgare
146.
Is a flavor used to disguise the bitterness of certain preparation, such as those containing quinine
a)
kava
b)
eriodyction
c)
jalap
d)
podophyllum
147.
All these drugs contain caffeine except
a)
coffee
b)
cola
c)
coca
d)
thea
148.
The solid, oxidized hydrocarbon portion of volatile oils
a)
eleoptene
b)
stearic acid
c)
stearoptene
d)
none of the choices
149.
The study of the used of chemical agents which are more selectively toxic to the invading organism than to host is known as
a)
physiology
b)
immunology
c)
chemotherapy
d)
pharmacology
150.
The solid resin from turpentine
a)
benzoin
b)
styrax
c)
rosin
d)
tolu balsam
151.
When the powder of this alkaloid is burned, the resultant vapor is inhaled for the relief of asthma
a)
caffeine
b)
cinchona
c)
stramonium
d)
cocaine
152.
Which of the following is an anti-hypertensive and psychotherapeutic alkaloid
a)
physostigmine
b)
quinine
c)
reserpine
d)
papaverine
153.
Medicinal effects and potencies of cardio-active glycosides depend on
a)
digitalase
b)
glucose
c)
genin structure and glycone component
d)
cardiac/cardiotonic effect
154.
most notable property of tannins utilized in the leather industry
a)
denature protein
b)
precipitate protein
c)
denature proteins and precipitate protein
d)
none of the choices
155.
A test for carbohydrates containing protein producing a red-blue or purple ring between the two layers
a)
Xanthoproteic
b)
Ninhydrin
c)
Molisch test
d)
Biuret
156.
Parts of this plant are used as condiments, except
a)
Bawang
b)
Sili
c)
Makabuhay
d)
Luya
157.
Although the prostaglandins are hormone-like, they more closely resemble which of the following chemically
a)
carbohydrates
b)
enzymes
c)
lipids
d)
porphyrins
158.
Plastid pigments are commonly extracted by which of the following solvents
a)
ether
b)
chloroform
c)
acetone
d)
alcohol
159.
A plant pigment of therapeutic importance in preventing xeropthalmia is
a)
carotene
b)
xanthophylls
c)
fucoxanthin
d)
chlorophyll
160.
A test to distinguish tartrates from citrates makes use of this reagent
a)
Deniges reagent
b)
Bromine water
c)
mayer's Rgt
d)
Dragendorff's Rgt
161.
USP official alkaloid(s) with oncolytic action is/are the following
a)
all of the choices
b)
leucristin
c)
vinblastine
d)
vinca leucoblasin
162.
Method of extracting volatile oils with the use of cold fat
a)
enflurage
b)
digestion
c)
percolation
d)
ecuelle
163.
Which vitamin is formed in the body by exposure to ultraviolet irradiation or sunlight
a)
Vitamin D
b)
Vitamin E
c)
Vitamin C
d)
Vitamin A
164.
The following is not a polysaccharide
a)
sucrose
b)
insulin
c)
dextran
d)
cellulose
165.
Active constituent of the volatile oil of tanglad which is a very good source of vitamin A
a)
citral
b)
geraniol
c)
citronella
d)
nerol
166.
The alkaloid obtained from ergot which is used to relieve or treat migraine is
a)
ergotamine
b)
ergometrine
c)
vinblastine
d)
lysergic acid diethylamide
167.
These yield fixed oils except
a)
coconut
b)
lemon grass
c)
corn
d)
peanut
168.
Colloidal substance obtained from Gelidium cartilagineum also known as
a)
vittae
b)
glandular cells
c)
schizogenous cells
d)
parenchyma cells
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