Random Flashcards
1
Q
CCA base sequence is present in which part of t-RNA?
A
3’ end
2
Q
In which year was genetically engineered insulin first made?
A
1983
3
Q
Are natural killer cells granular or agranular?
A
Granular
4
Q
Phase of maturation in spermatogenesis involves the
A
Formation of spermatids from primary spermatocytes
5
Q
The stop codons are
A
UAG, UAA, and UGA
6
Q
Buttress roots arise from
A
Base of tap root and trunk
7
Q
What are the functions of membranous labyrinth?
A
Hearing and balance
8
Q
What kind of nucellus is found in polypetalae?
A
Well-developed
9
Q
How many tegments are found in polypetalae?
A
2
10
Q
Enzyme TPA (tissue plasminogen activator) is used to
A
Dissolves blood clots
11
Q
Estuary is the
A
Meeting point of fresh water and sea water
12
Q
Which is one of the most poisonous product formed by the burning of chlorine containing waste?
A
Dioxin
13
Q
Placental wolf and tasmanian wolf are examples of
A
Analogy
14
Q
The most important function of K+ ion in plants in
A
Acts as an enzyme for many physiological processes
15
Q
In which cell of C4 plants does the primary fixation of co2 occur?
A
Mesophyll cell
16
Q
Hypogeal germination is found in rice, true or false?
A
False
17
Q
Hypogeal germination is found in onion, true or false?
A
True
18
Q
Petunia has valvate aestivation, true or false?
A
True
19
Q
What type of phyllotaxy is found in Psidium?
A
Opposite phyllotaxy [Psidium= guava]
20
Q
In bryophytes, operculum develops from
A
Archegonium
21
Q
Mala-D is a weekly oral contraceptive pill, true or false?
A
False. Mala-D is a daily oral contraceptive pill.
22
Q
Name a monthly oral contraceptive pill.
A
Quinestrol
23
Q
Which mouth parts are present to the lateral side of the pre-oral cavity of cockroach?
A
Mandibles and 1st maxilla
24
Q
A fruit that dehiscences from apex to base and is derived from monocarpellary ovary with marginal placentation is
A
Legume
25
Water cavity is absent in the stems of which plants?
Dicots
26
Water cavity is present in the stems of which plants?
Monocots
27
Can fehling solution detect starch?
No
28
If testa is removed from water soaked gram seed, the remaining structre is
Fully mature embryo
29
Cosmid is a vector for carrying large DNA fragments into host cells. True or false?
True
30
Interferon is an enzyme that interferes with DNA replication. True/false?
False
31
Study of the effect of global warming on human population comes under
Population ecology or autecology
32
Coniferous forests are evergreen forests. True/false?
True
33
Tundra has permafrost. True/false?
True
34
Acacia trees are found in savannahs. True/false?
True
35
Scrubbers and electrostatic precipitators are generally used for removal of
Particulate matter
36
What type of circulatory system does Balanogolossuses have?
Closed type
37
Balanoglossus have a short trunk. True/false?
False. They have a long trunk.
38
Peritubular capillaries of the nephron arise from the
Efferent arterioles
39
What are the changes in ciliary muscle and eye lens when nearby objects are viewed?
When nearby objects are viewed, ciliary muscles contract making the lens more convex, thus decreasing its focal length. The lens thickens.
40
What are the changes in ciliary muscle and eye lens when distant objects are viewed?
When far objects are viewed, ciliary muscles relax making the lens less convex thus increasing the focal length.
41
A trisomic aneuploidy patient having double barr body and problem in menstrual cycle has a genetic problem called
Multi X female (super female)
42
(a) It is not a congenital disease.
(b) Spreads due to conscious behaviour.
(c) Loss of contact inhibition.
(d) "Don't die of ignorance" is said in reference to it.
(e) Metastasis
How many of above statements are not correct regarding AIDS?
Two
| c and d
43
During evolution, the first living beings were like actinomycetes. True/false?
False. They were like bacteria.
44
Milk formation and secretion is the function of a hormone secreted by adenohypophysis. True/false?
true
45
Increase in calcium levels of body is the function of a hormone secreted by adenohypophysis. True/false?
False
46
What is phenetic classification? What are the other names for phentic classification?
Phenetic classification is the classification of organisms based on morphology. It is also known as taxometrics and numerical taxonomy.
47
In which kingdom only heterotrophic, holozoic and saprophytic modes of nutrition found?
Kingdom animalia
48
Capsella belongs to which family of plants?
Brassicaceae
49
What condition of stamens are found in Capsella?
Tetradynamous
50
Tetradynamous condition of stamen is found in family cucurbitaceae. True/false.
False
51
In conjoint vascular bundles, xylem surrounds phloem. True/false?
False.
In conjoint vascular bundles which the two types of tissues are separated from one another.
In collateral vascular bundles, xylem surrounds phloem or vice versa.
52
Towards which surface is the xylem located in leaf?
Adaxial epidermis
53
Active K+ exchange mechanism for stomatal movement was given by
Levitt
54
Polymerase chain reaction requires thermostable DNA polymerase, DNA ligase and primase. True/false?
False.
| PCR only requires thermostable DNA polymerase of the three.
55
What is the ratio of HNO3 and H2SO4 in acid rain composition?
3:7
56
A lake near a village suffered heavy mortality of fish within a span of a few days. The possible reasons are
(a) Lot of urea and phosphate fertilizers were used in nearby crops.
(b) The area was sprayed with DDT by an aircraft.
(c) Lake water turned green and stinky.
(d) Phytoplankton population declined reducing photosynthesis.
a,c
57
What type of vision is found in cockroach?
Apposition or mosaic vision
58
What is supination?
Palm facing upwards
59
What is pronation?
Palm facing downwards
60
Humans can show supination and pronation of palm with the help of
Pivot joint
61
At postsynaptic membrane the new potential developed is called action potential. True/false?
False. It is called postsynaptic potential.
62
Filling of urinary bladder is associated which autonomous nervous system?
Sympathetic nervous system
63
Is increase in salivation a function of sympathetic nervous system?
No
64
In Ascaris, genital duct and digestive duct join to form cloaca. True/false?
True
65
In earthworm, genital duct and digestive duct join to form cloaca. True/false?
False
66
In Taenia, genital duct and digestive duct join to form cloaca. True/false?
False
67
In Locust, genital duct and digestive duct join to form cloaca. True/false?
False
68
In which part of bacteria are respiratory enzymes found?
Cell membrane
69
Phanerogams are seeded plants, true or false?
True
70
Which sugar is found in the haemolymph of insects?
Trehalose
71
Glutamate dehydrogenase is an important enzyme involved in
Amino acid biosynthesis
72
During an experiment, vegetative nucleus was destroyed inside the pollen tube. Immediately afterwards it was observed that the growth of pollen tube was stopped and pollen tube could not reach up to ovule, because
Growth of pollen tube is controlled by vegetative nucleus
73
HindIII produces blunt ends. True/false?
False
74
EcoRV produces blunt ends. True/false?
True
75
Sonneratia trees are found in which forests?
Mangrove forests
| [Sonneratia= sunderbans]
76
In which biomes are Dipterocarpus (shorea trees) found?
Deciduous forests
77
In which biomes are Tendu trees found?
Deciduous forests
78
In which biomes are Hopea trees found?
Deciduous forests
79
File like rasping organ is absent in which mollusc?
Loligo
80
Their function is to move particles or molluscs in specific direction over the epithelium. They are mainly present in inner surfaces of hollow organs. Identify the cells in above mentioned sentence.
Cuboidal ciliated epithelium
81
If due to some injury, the chordae tendineae of the tricuspid valve of the human heart become non-functional, what will be the immediate effect?
The flow of blood into the pulmonary artery will be reduced.
82
What is the function of duct of bellini?
Conduction of urine
83
Aperture of an eye can be changed by
Iris
84
Which organism was the common ancestor of birds and crocodile?
Thecodontia
85
Agranal chloroplast are found in which cells?
Bundle sheath cells of monocot
86
Glucose is absorbed in body through which process?
Active transport, simple diffusion and facilitated diffusion
87
Osmosis involves diffusion of water from its more to less concentrated side. True/false.
True
88
Intrafascicular cambium is secondary in origin. True/false?
False. It is primary in origin as it originated from embryonic meristems.
89
Which is the msot abundant type of configuration of proteins?
Tertiary protein
90
Global agreement in specific control strategies to reduce the release of ozone depleting substances was adopted by which protocol?
Montreal protocol
91
Global agreement in specific control strategies to reduce the release of greenhouse gases was adopted by which protocol?
Kyoto protocol
92
Gills in apple snail are found in which part of the body?
Mantle cavity
93
Which type of regeneration is found in planaria?
Morphallaxis
94
What is morphallaxis?
In Morphallaxis, any cut part of the organism regenerates into whole organism.
95
What is epimorphosis?
In Epimorphosis, the cut or injured part of the organism is repaired. The cut part is regenerated.
96
Sphenodon is the scientific name of
Tuatara
97
Reptiles have mesonephric kidneys, true or false?
False
| Reptiles have metanephric kidneys.
98
What is the ploidy of zygospore?
Diploid
99
Phycomycetes show all types of syngamy. True/false?
True
100
If a recombinant DNA bearing gene for ampicillin is transferred into E.coli cells and the host cells are transferred to ampicillin containing medium, the transformant grows but untransformed host dies. True/False?
True
101
What is the ploidy of a diploid cell in the G2 phase of mitosis?
2n
102
If the number of chromosomes are four, what are the number of chromatids in prophase?
8
103
What are Balbiani rings?
The bands of polytene chromosomes become enlarged at certain times to form swellings called puffs. In the regions of puffs, the chromonemata uncoil and open out to form many loops.The puffs indicate the site of active genes where mRNA synthesis takes place. These loops are called Balbiani rings
104
Which form of nitrogen does rhizobium convert?
Rhizobium converts atmospheric nitrogen.
105
WHat is a wetland?
Wetland is a flooded ecosystem where oxygen free processes prevail.
106
Which phytohormone increases the shelf life of fruits?
Cytokinin
107
In MOET fertilised eggs are removed surgically at 8-32 cell stage and transferred to surrogate mother. True/false?
False.
| In MOET fertilised eggs are removed non-surgically at 8-32 cell stage and transferred to surrogate mother.
108
Sodium citrate is used as a chelating agent to clot blood. True/false?
True
109
Blood without clotting factors is called serum. True/false?
False. It is blood plasma without fibrinogens.
110
When was the first animal cloned?
1996 (dolly)
111
Knockout mouse is genetically modified by replacing its existing gene with an artificial gene.True/false?
True
112
How many parotid, submaxillary and sublingual glands are present?
One pair each
113
Glomerular filtration rate is filtrate formed by each kidney per minute and it is 125 ml/min. True/false?
False. Glomerular filtration rate is filtrate formed by both kidney per minute and it is 125 ml/min.
114
Which part of male reproductive system is analogous to labia majora of females?
Scrotum
115
What are the four key stages of anaerobic digestion to form biogas?
Hydrolysis, acidogenesis, acetogenesis and methanogenesis
116
Biocenology is the study of
Community, it is the study of interaction of living and non living things.
117
In flowering plants archesporium gives rise to
Wall and sporogenous tissue
118
Agar agar is obtained from
Red algae
119
The most primitive and advanced type of placentations are , respectively ,
Superficial and basal placentation
120
In the process of aerobic respiration, how many ATP molecules will be generated from one molecule of triose phosphate?
20
121
Which one is the precursor of ethylene?
Methionine
122
Radish is a perennial plant, true/false?
False. It is annual/biennial.
123
Mango is an annual plant. True/false?
False. Mango is a perennial plant.
124
WHat is the concentration of methane among the major greenhouse gases?
20%
125
What is the concentration of CFCs among the major greenhouse gases?
14%
126
Nucleases and amylopsin are found in which digestive fluids?
Pancreatic juice
127
What event that is likely to occur in the blood entering pulmonary capillaries?
Reverse chloride shift
128
Angiotensinogen II is a vasodilator. True/false?
False. It is a vasoconstrictor.
129
Mandible is an unpaired cranial bone. True/false?
False. It is an unpaired facial bone. Sphenoid bone is an unpaired cranial bone.
130
The somatic neural system of the peripheral nervous system relays information between
CNS and skeletal muscles.
131
Autonomous neural system relays information between
CNS and smooth muscles
132
Mule is formed by cross hybridisation. True/false?
False. It is formed by interspecific hybridisation.
133
What is the role of bicarbonate ions in stomach?
Protection of stomach wall from acid along with mucus
134
The mucus and bicarbonates in the intestinal mucosa are rescreted by
Pancreas
135
Which order does the plant Porella belong to?
Bryophyte (liverwort)
136
Polyethylene glycol enhances or induces fusion of protoplasts, true/false?
True
137
Sodium chloride enhances or induces fusion of protoplasts, true/false?
True
138
The UN Conference of Parties on climate change in the year 2011 was held in which country?
South Africa
139
In ETS, Oxygen acts as an electron acceptor only. True/false?
False. Oxygen acts as the final electron acceptor and also as a hydrogen ion acceptor.
140
Cyt c is small mobile protein attached to outer surface of inner membrane of mitochondria, true/false?
True.
141
Is equisetum heterosporous or homosporous?
Homosporous
142
Is Adiantum heterosporous or homosporous?
Homosporous
143
All the mammals have body hair without any exceptions. True/false?
False.
144
Do chondrichthyes have paired appendages?
Yes
145
Removal of proximal convoluted tubule from the nephron will result in
Dilute urine
146
Sertoli cells are involved in release of ABP, true/false?
True. (ABP: Androgen binding protein)
147
Sertoli cells inhibits the secretion of anti mullerian hormone. True/false?
False. They release anti mullerian hormone.
148
Presence of which of the following hormone in urine represents fertile period in a female during her fertile age?
Leutinizing hormone
149
Is tiger cat a placental or marsupial mammal?
Marsupial mammal
150
A characteristic mushroom shaped gland is present in which segments of cockroach?
6 to 7
151
Photoreceptors in human eye are depolarised during darkness and become hyperpolarized in response to the light stimulus. True/false?
True
152
Restorage of nucleocytoplasmic ratio is performed in
M phase
153
The parotid, sub-maxillary and sub-lingual salivary glands are located just outside the buccal cavity and secrete salivary juice into the buccal cavity. True/false.
True
154
Chloroplasts are aligned with their flat surface, parallel to the tangential wall of cells when
1) Moderate incident light comes
2) Diffused light comes
3) Plant is kept in strong light
4) `When intermittent strong and diffused light is given
2
155
What condition of chloroplast is known as epistrophe?
Chloroplast align parallel to the walls of mesophyll cells (mainly palisade cells) when intensity of light is minimum, to get more and more of light.
156
What is parastrophe?
When the intensity of light is maximum the chloroplast gets aligned perpendicular to the mesophyll cells to avoid photooxidation of chlorophyll a molecule This condition is called Parastrophe.
157
What is the alignment of chloroplast is medium light called?
Apostrophe
158
Name all the unpaired cranial bones.
Frontal
Occipital
Sphenoid
Ethmoid
159
Name the unpaired facial bones.
Vomer
Mandible
Hyoid
160
Are conidia arranged basipetally on conidiospores?
Yes
161
WHat is a hypogynous ovary?
Superior ovary
162
What type of placentation does mustard have?
Parietal placentation
163
In Nepenthes, the coiled tendril like structure is the modification of
Petiole
164
Tyloses are present in lumen of tracheids. True/false?
False. They are present only in vessels.
165
Epithem cells are
Loosely arranged parenchyma cells below the hydathodes
Epithem refers to the loosely arranged cells at the dead end of veins (hydathodes) through which water oozes out as a dilute solution of minerals under the influence of positive root pressure. This process is called as guttation.
166
During daytime, the opening of stomata involves influx of Cl– ions inside the guard cells. True/false
True
167
During daytime, the opening of stomata involves increase in the concentration of malic acid in guard cells. True/false?
False. Potassium malate is formed in guard cells, not malic acid.
168
The first electron acceptor in cyclic photophosphorylation is
FeS
169
In C4 plants, PEP carboxylase and RuBisCO enzymes are present in which parts of cells?
Cytosol and stroma
170
Cytochrome c-oxidase complex contains
Cyt a, Cyt a3, Cu centres
171
Control of metabolism is a function of DNA. True/false
False
172
In prokaryotes during DNA replication, which enzyme has exonuclease activity in both 5'----> 3' and 3' ---> 5' directions?
DNA polymerase 1
173
The number of genes present on the human - ``Y''- chromosome, is
231
174
Sebaceous gland secretion mainly contains
Sterols and hydrocarbons
175
Name an inorganic cofactor present in cytochrome oxidase.
Cu2+
176
Enamel is secreted by A which are B in origin.
A- ameloblast cells
| B- ectodermal`
177
Filiform papillae are the smallest papillae. true/false?
True
178
The protein coat around the core of HIV is made of
P24
179
What is the genetic material of hepatitis A virus?
ss Rna
180
The ions essential for cardiac muscle contraction are
Na+, Ca2+
181
Genu and splenium are the parts of
Corpus callosum
182
Free nerve endings of skin receptors in humans are concerned with sense of
Pain
183
Destruction of –––I––– secreting –––II––– of substantia nigra leads to Parkinson's disease
I- dopamine
| II- Pars compacta
184
What is the function of somatostatin?
Suppresses release of hormones from pancreas
185
WHat is the function of Enterogastrone?
Slows gastric contraction
186
What is the function of Enterocrinin?
Stimulates crypts of lieberkuhn to release enzymes in pancreatic juice
187
What is the function of secretin?
Releases bicarbonate in pancreatic juice
188
Tunica media is thick in arteries and thin in veins. True/false?
True
189
Selaginella is a bryophyte. True/false?
False. It is a pteridophyte.
190
Semi–autonomous cell organelles and bacteria resemble with each other in their double membrane structure. True/false?
False. Bacteria don't have double membrane structure.
191
In which stage of cell cycle does duplication of centrioles occur?
S phase
192
Root nodules are formed due to division and growth of
Cortex and pericycle cells
193
Aloe belongs to the family Solanaceae. True/false?
False. It is a monocot.
194
C4 acid is converted into C3 acid and vice–versa in sugarcane leaf in
Malic acid (4C) ------> Pyruvate (3C) (Bundle sheath cell)
PEP (3C) ------> Malic acid (4C) (Mesophyll cell cytoplasm)
195
Is barley a monocot or a dicot?
A monocot
196
Orchid seeds are monocot and endospermic. True/false?
False. They are non endospermic.
197
In Turner's syndrome, the individual has the chromosome complement as 45 + XO. True/false?
False.
| THey have genetic complement 44 + XO
198
Which enzyme is also known as Kornberg enzyme?
DNA Polymerase 1
199
Jacobson's organ is found in
Some reptiles
200
Weberian ossicles are found in
Some osteichthyes
201
Organ of Bojanus is found in
Molluscs
202
What is the excretory structure of Nereis?
Nephridia
203
What type of excretory structure is present in Lepisma?
Malpighian tubules
204
Palaemon is the scientific name of
Shrimp
205
Green glands are found in Palaemon. True/false?
True
206
Approximately, how much blood is pumped out by both the ventricles, per cardiac cycle?
140 ml
207
What type of junctions are present in intercalated disc of cardiac muscles?
Gap junction
208
Amniotic fluid extracted for the purpose of amniocentesis actually contains
Exfoliated somatic cells from foetus
209
Number of nitrogen in adenine molecule is
5
210
Antianxiety drug includes amphetamines. True/false?
False. They comtain barbiturates.
211
The action of adrenaline on heart is via which secondary messenger?
cAMP
212
Based on photoperiod, what type of plant is rice?
Short day plant
213
Based on photoperiod, what type of plant is soyabean?
Short day plant
214
Based on photoperiod, what type of plant is tobacco?
Short day plant
215
Based on photoperiod, what type of plant is tomato?
Day neutral plant
216
Based on photoperiod, what type of plant is henbane?
Long day plant
217
Based on photoperiod, what type of plant is sugarbeet?
Long day plant
218
Based on photoperiod, what type of plant is cucumber?
Day neurtal plant
219
Based on photoperiod, what type of plant is potato?
Long day plant
