Biology Flashcards
1
Q
Volume of bacteriophage is about ___ of host
A
1/1000
2
Q
It is true for viruses
A
No independent metabolic activities
3
Q
The genome of inflienza virus is made up of
A
Single stranded RNA
4
Q
Polio virus is
A
Spherical viruses
5
Q
TMV are
A
Rod shaped virises
6
Q
Which of the following is composed of nucleic acid only
A
Viroids
7
Q
In prion information is carried through
A
Protein
8
Q
The component reponsible for shape of virus
A
Protein subunit
9
Q
The genome of most animal virus contains
A
RNA
10
Q
Which of the followong is not related to enveloped virus
A
They are tolerant to antibodies
11
Q
The bacteriophage replicates only inside the
A
Bacterial cell
12
Q
The bacteriophage attaches itself by its tail to the cell wall of bacteriium at
A
Adhering surface
13
Q
Hepatitus A virus is
A
ssRNA
14
Q
Virus that attack on spinal cord is
A
Poliovirus
15
Q
Poliomyelitis affects
A
Motor neuron
16
Q
Pigs are reservoir for
A
Hepatitus E
17
Q
Virus that affect gental organs
A
HCV
18
Q
Which of the following pair of disease is viral
A
Rabies, Measles
19
Q
Which virus that infects humans has no vector and is unable to suvive outside human body
A
No (polio virus,, mumps virus,, chicken pox)) None of these
20
Q
It act as template for reverse transcriptase
A
Viral RNA
21
Q
Common among all virus during infection
A
Translation in cytoplasm
22
Q
Which one is not an opportunistic disease related to HIV infection
A
Destruction of body immune system
23
Q
The main target of HIV ib AIDS is
A
HELPER T Lymphocytes
24
Q
Which of the followong is simplest forms ofpathogens causing disease
A
Prions
25
The filterable agents were first purified in 1935 when, Stanely was successful in crystallizing the
Tobacco mosiac virus
26
Which virus has no nucleic acid
Prions
27
Which is not viral disease
Tetanus
28
Which of the following is an example of anabolic process
Photosynthesis
29
Mammalian cell contain 1.1 percent
RNA
30
Which property of water play an important role in regulation of heat produced by oxidation
Heat of vapourization
31
Which property of water helps to main the integriry of lipid membranes
Hydrophobic exclusion
32
It doesnot yeild glucose on complete hydrolysis
Chitin
33
Formation of trisaccharide involves release of ______ water molecule
2
34
How many carbon atoms are present inside the ring of furanose
4
35
Which of the following carbons are present outside the ring of fructose
1st and 6thcarbon
36
In disaccaride if carbon atoms are 12 then how many OH groups will be present
8
37
The simpleat monosaccharide containing keto grop
Dihydroxyacetone
38
Which of the following type of carbihydrates has high molecular weight and is sparingly soluble in water
Polysacharide
39
Pure form of cellulose is
Cotton
40
_______is the storage of carbohydrate in animal and humans which is equivalent to the _______in plants
Glycogen, starch
41
How many type of amino acid are present in the cell
170
42
A globular protein consisit of maore than one polypeptide chain has
Quaternary structure
43
A protein having secondary structure posses
Hydrogen binding and peptide bond
44
Muscle hemoglobin posses
Tertiary structure
45
Proteins if hair, hirns, feather and other skin parts are
Structural protein
46
How many peptide bond are present in insuline molecule
49
47
Polypeptide chain bends and folds upon itself to form a globular shape. This is protein's
Tertiary structure
48
Which molecular structure of enzyme is essential for activity of enzyme
Tertiary structure
49
Sexodary structure if lrotein is fou d in
Keratin
50
Back bone of amino acid comprises of
C-C-N
51
Bonds present in alpha helix are
Hydrogen bonds
52
Which if the following is a protease
Renin
53
It is an amino acid and also a part of phospholipid
Serine
54
Myeline sheath of lipid is conposed of
Sphingolipids
55
How many double bond is present in R-group if oleic acid
1
56
It is unsaturated fatty acid
Oleic axid
57
Which of the following type of RNA is catalytic in Nature
Ribozyme
58
Nucleo histone is present in
Chromosomes
59
How much quantity of lipid is lresent in gram negative bacteria
11-12%
60
Gram positive bacteria have
No outer membrane
61
Nuceoid in bacteria is stained with
Feulgen dye
62
E. Coli closed circle chromosome measures approximately
14000um
63
Which is self replicating organalle in bacteria and not essential for bacterial growth and metabolism
Plasmid
64
Which control growth and metabolic activities of bacteria
Nucleoid
65
A gel like substance present between the plasma membrane amd nuceoid is called
Cytoplasmin matrix
66
Largest number of bacteria may be found in the arrangement called as
Streptococci
67
Syphilis is caused by
Spirochete
68
In which of the following shapes gut living symbiont E. Coli is found
Rod
69
Arrangement of covcus bacteria in chain is called
Streptococci
70
Rod shaped bacteria is called
Bacilli
71
Largest bacteria among the following is
Epulopiscium fishelsoni
72
Primary stain used in gram staining is
Crystal violet
73
Archeobacteria in their structure
Peptidoglycan
74
Glycocalyx is made up of
Polysaxxharide
75
In gram negative bacteria the outer membrane is made up of
Lipoprotein
76
Cell wall of a bacterium doesnot include
Plasma membrane
77
Some bacteria are resistant to phagocytosis due yo the lresence of
Slime
78
It is characteristic true for gram positive bacteria
Less lipid than gram gram negative
79
Respiratory enzyme in bacteria are present in
Mesosomes
80
Dormant thick walled dessication resistant body
Cyst
81
Member of kingdom monera devoid of cell wall
Mycoplasma
82
Bacteria plasma membrane is not involved in
Maintenance of cell shape
83
Which is not true about bacterial spore
Produced during differentiation of vegetative cells
84
Nucleoid is the strucure not found in
Goblet cells
85
If one of the following is missing bacteria cannot increase number of its plasmid copies
Origin of replication
86
When tuft of flagella is present at both the ends in the structire of bacterial cell then the condition is called
Amphitrichous
87
Which if the following is divide by fission
Bacteria
88
A bacteria which has a group of two or more flagella inserted at one pole of the cell
Lophotrichous
89
It is not true about archea
Inhibited by antibiotics
90
A similarity that can be present between flagella of bacteria and an animal cell
Motility as function
91
Chances of _______having a flagella are rare
Diplococcus
92
What is false statement about pili
True pili present in gram positive and negative bacteria
93
Bacteria that can live in intestine and produce vitamin K belongs to
Bacillus
94
Chemotherapeutic are
Antibiotics
95
Antibiotics and hormones can be strilized by using
Membrane filtration
96
Which ia not true about antibiotics
Can also be synthesized in laboratory
97
Treatment by using attenuated culture of bacteria is called
Vaccination
98
Which of the following antibiotics causes permanent discoloration of teeth in young children if it is misused
Tetracycline
99
Bacteria present in canned food is
Clostridium botulinium
100
Which is present in intestine of animals
Campylobacter jejuni
101
_________are used for sterilization process
Flask
102
Which method causes the oxidation of chemical constituents of a bacterial cell
Dry heat
103
Largest specie of bacteria is
Spirochaeta plicatilis(250um long)
104
Location of staphylococcus aureus
Nose, skin
105
Location of viridans streptococci
Mouth, nasopharynx
106
Which are examples of chemotherapeutic agents
Suphonamide,, tetracycline, penicillin
107
Cyanobactwria unlike other types of bateria that photosythesis, do
Give off oxygen
108
Most pathogenic bacteria cause disease by
Directly destroying individual cell of hoat
109
Cyanobacteria
Have chlorophyll
110
Facultative anaerobes
Donot always need oxygen
111
When one or more falgella araises only from one or both ends of a rod or spiral shaped cell the arrangemnt is termed as
Polar
112
What is the output of kreb cycle
4Co2 , 4ATP, 6NADH, 2FADH2
113
WHAT IS INPUT OF KREB CYCLE
2 ACETYL GROUPS, 2 ADP AND 2PI
6NAD, 2FAD
114
Name the mobile carrier of electron in ETC
Cyt Q, CYT c
115
Who proposed chemiosmosis theory if ATP production in mitochondria and chloroplast
Peter Mitchell in 1978
116
Addition of inorganic molecules to any organic molecule it is called
Phosphorylation
117
Net product if substraye level phosphorylation is
2ATP
118
How many ATP are produced by chemiosmosis through ETC
32ATP
119
In substrate level phisphorylation how many ATP are consumed
4ATP
120
Mitochondrial membrane is impermiable for
NADH
121
Eukaryote yeild ______ of ATP Than Prokaryotes
2 less number of ATP
122
After photosynthsis the fixed carbons leave the chloroplast in the form of
Dihydroxyacetone phosphate
123
In Calvin cycle PGAL molecules are converted into glucose within the
Chloroplast
124
Which is important link between anabolism and catabolism
ATP
125
Cytochrome litteraly mean
Cell colour
126
Ubiquinone is
Lipid insoluble in water
127
Pyruvate enter mitochondria via
Active transport
128
Specteopgotometer is used to measure
Absorbtion if O2
129
Which shows effectiveness of wavelength of light driving photosynthesis
Narrow spectrum
130
Conversion of light energy into chemical energy is the function of
Mitochondria
131
The source of oxygen released during photosynthesis
Water
132
Van Neil hypothesis about the production of oxygen during photosynthesis was based on study and investigation on
Protonema
133
Air contain________percentage of carbin dioxide
0.03-0.04
134
All of the following are difference between Chl a and Chb except
Chl a is present in antenna cinplex while Chl b is in reaction center
135
Location of phytol tail of chlorophyll b is
Thylakoid membrane
136
It is not a function of carotenoid
Convert light energy into chemical energy
137
The final acceptor of electrons during the noncyclic electron pathway is
NADP
138
WATER splits during photosynthesis in
Interior space of thylakoid
139
For fixing 3 molecule of Co2 what is needed
9 ATP AND 6 NADPH2
140
NADH is oxidized during
Lactic acid fermentation
141
Amount of energy extracted from glucose molecule during respiration without oxygen
2%
142
In cellular respiration product formed as a result of energy
ATP
143
Water is released during conversion of
2phosphoglycerate ------PEP
144
Which of the following represents dephosphorylation
Fructose1;3 bisphosphoglycerate -----3 phosphoglycerare
145
Starting from end products of glycolysis, how amny molecule of Co2 are produced up to yhe fromation of succinate in a single kreb cycle
3
146
The precursor of fumarate during Kreb cycle require_______ for fumarate synthesis
Succinate dehydrogenase
147
Deamination of aminoacid takes place in
Liver
148
An 18 carbon fatty acid is converted into how many acetyl CoA molecule
9
149
High concentration of NADH inhibits
Pyruvate decarboxylase
150
Phosphofructokinase is inhibited by
High concentration of ATP
151
Pancreatic zymogen are only activated when they reached at
Small intestine
152
The nodules of lymphoid tissue found in the wall of the intestinal tract are termed as
Peyer's patches
153
Zymogen cells secretes
Pepsinogen
154
It is not produced by duodenum
Bilivirdin
155
Salivary amylase acts on
Starch
156
Trypsinogen is activated yo trypsin by
Enterokinase
157
Cell that lower the ph of stomach
Parietal
158
Erpsin work on
Peptone
159
What is true about pepsin
It is produced in inactivated form
160
Secretion of secretin is forced by
Food from stomach
161
Botulism is severe form if
Food poisoning
162
Which enzyme is found in saliva
Ptyalin
163
Its length is 2.4 and comprises 2/5 of small intestine
Jejunum
164
Pair of salivary glands located behind jaws is called
Submaxillary gland
165
Largest gland in human body
Liver
166
Largest part of large intestine
Colon
167
What is length of duodenum in cm
25-30
168
Which of the following would most greatly increase the activity of an enzyme functioning in the small intestine
Increase the amount of enzyme
169
What is the pH of fresh HCL
1.5
170
Bacteria live in himan body for enzymatic source and vitamin
Enterococcus
171
The semi solid mass in stomach is knowns as
Chyme
172
Function irrelevant to oral cavity
Absorbtion
173
The deficiency of which of the following cause the immunodeficieny
Adenosine deaminase
174
Pathogens inside the human body are killed by
Immune system cells
175
Which of the following is not involved in respiration
Glucagon
176
The epiglottis a flap of tissues cover the
Larynx
177
What is breathing rate in human during exercise
30 times per minute
178
A surfactant is a secreatort product that is composed of
Protein and lipid
179
In human total xapacity of lungs is about
2.5 lit
180
What is human breathing rate during hard physical work
30-40 times per minute
181
The smaller tube within chest cavity having cartilagenous plates is knowns as
Bronchi
182
What is the length of windpipe
12cm
183
The cartilage protect trachea from
Collapse
184
The oxygen and carbon dioxide crosses the plasma membrane by the process of
Passive diffusion
185
A sufactant plays its role by
Decreasing surface tension
186
Amount of oxygen in inspired air is 21% while in expired air is
0.16
187
Intercoastal muscles found in
Ribs
188
Which is not true about himan lungs
They are opened sacs
189
The space inside the chest cavity during inspiration is
Increased
190
The covering of lung is termed as
Pleural membrane
191
In which of the following type of animal would you expect the digestive tract to be more complex
Those with two openings
192
How many sites of digestion are present in the digestive system of man
3
193
Cooking of the food and ________ in the mouth significantly improve the digestibility of food stuff by the enzyme
Mastication
194
On taking spoon of boiled rice and after partial digestion, which of the following biomolecule cannot be the part of bolus
Monosaccharide
195
Main function of NaHCO3 and other salts in buccal cavity is to
Stabilize the pH
196
Which is different from others
Amylase
197
More gastric juice is produced by gastric glands on the stimulation if a hormone
Gastrin
198
The digestive enzyme which is absent in adults
Rennin
199
Gastric glands are composed of _______ type of cells
3
200
HCL in gastric juice is secreated by which one of the following cells
Oxyntic cells
201
Protein components of food are digested by the enzyme secreation of
Zymogen cells
202
Digestive system consist of different layers the innermist in known as
Mucosa
203
Food enter from stomach into small intestine through
Cardiac sphincter
204
Which of the following is produced from both intestinal lining and pancrease
Lipase
205
Which of the following do not pass from the small intestine to the large intestine
Gastrin and secretin
206
Fats pass into blood via
Right lymphatic duct
207
Which of the following is not a component of intestinal juice
Ptyalin
208
Which of the following is incorrect regarding to trypsin and pepsin
Both act as same site and pH
209
Which one of the following is endocrine pair present in digestive canal
Stomach and duodenum
210
The hormone which increase the secreation of pancrease juice is
Secretin
211
Release of NaHCO3 and many enzyme recauired for intestinal digestion is related with
Pancrease
212
The acidity dietry contents of the stomach on reaching small intestine are neutealized by_______ produce by _________
Bicarbinate, pancrease
213
Hepatic and pancreatic secreation are also stimulated by a hormone called
Secretin
214
All pancreatic components of food can be digested by
Pancreatic juice
215
The large intestine in human
Absorb H2O and electrolyte
216
Movement of material across ileum to large intestine is guarded by
Ileocical sphincter
217
Mucus secreating goblet cells are present in _________
Trachea
218
All of the following are lined with mucus membrane of viliated epithelium except
Bronchioles
219
A complex cartilagenous structure surrounding the upper end of the trachea
Larynx
220
Trachea lies _____ to the esophagus
Ventral
221
Human pharynx is divided into _____ section
3
222
The repiratory bronchioles terminate in elongated airways called
Alveolar duct
223
Surfactant is present in
Alveoli
224
Which of the following is bot the function of sufactant
Filtration of blood
225
Which energy is consumed in breathing
Chemical
226
Find out incorrect statement
Exhaled air is comparatively dried than inhaled air
227
During inspiration fresh air moves in which has high percentage of
N2
228
Partial pressure of oxygen is maximum in
Inspired air
229
Which if the following plays passive role in breathing
Lungs
230
If you hold deep breath for long time CO2 levels are likely to ________and the pH of body fluid is likely to ______
Increase, decrease
231
Which of the following correctly describes the binding affinities of gases with haemoglobin?
COgreater than CO2 greater than O2
232
O2 pressure in cells or tissue is
Less than 60 mmHg
233
All of the following can bind with haemoglobin except
HCO3-
234
WHICH OF THE FOLLOWING EXPLAIN INCIRRECTLY THE BINDING OF INORGANIC COMPONENT IN STRUCTURE FOUND UN ERYTHROCYTES
Co with organic portion of haem
235
All of the following occur due to presence of CO 2 in blood except
Increase respiratory volume
236
During inspiration rhe space inside the chest cavity is increasd due to
The contraction if the muscles of the diaphgram
237
Active transpoet is selective and depends upon
Respiration
238
The site where most of the water uptake and mineral take place is
Root hair
239
The roots bears a dense cluster of tiny hair like structure which are extension of
Epidermal cell
240
Transport ofineral from soil to epidermal cells of root via carrier protein molecules along their concentration gradient is called
Facilitated diffusion
241
Water potential if pure water is
Zero
242
To attain maximum turgidity if cell it mist be placed in
Distilled water
243
In a __________ solution solute and pressure potential are equal to water potential
Isotonic
244
The pathway adopted by water in plants through adjacent cell wall is
Apoplast pathway
245
In root cell _____ pathway become discontinous in the endodermis due to presence of casparian stripes
Apoplast
246
Water and minerals move down theri conc gradients theough plasmodeamata to cell of cortex, endodermis, pericycleand then to sap in xylem xells this us also knowns as
Symplast pathway
247
Oxygen content of frsh air is about
200ml
248
All of the following facilitates the release of O2 from haemoglobin except
High pH
249
In reduced form haemoglovin carries
Hydrogen ion
250
Carboxyhaemoglobin is formed when Co2 combines with
Amino group of haemoglobin
251
Gaseous exchange in animals takes place with the help of process caleed
Diffusion
252
Tidal volume of lungs is
0.5 lit
253
The residual volume is
1.5 lit
254
Inspiratory reserved volume is
3000ml
255
Which of the following is false about haemoglobin
Each haem in haemoglobin can bind to four 02 molceules
256
Haemoglobin in man can increaseoxygen carrying capacity by
75 times
257
Which of the following is a respiratory disorder related to malnutritiin
Tuberclosis
258
Brwakdown of thin wall of alveoli occur in
Emphysema
259
Alveoli become large and damage which reduce the suface area for the exchange of respiratory gases cindition called
Emphysema
260
Which of the following statement is correct about repiratory pigment
Myoglobin has more affinity for oxygen as compared to haemoglobin
261
Cellulose are dietry fiber
262
What is your name?
izhaan
