RL BIO 3 Flashcards
(296 cards)
1
Q
The vitamin that helps in blood clotting is:
A
VitaminK
2
Q
●The vitamin that helps to prevent infections in thehuman body is:
A
Vitamin C
3
Q
●The H5N1 virus which causes bird flu was firstdiscovered in:
A
1997
4
Q
●Tetanus is caused by:
A
Clostridium
5
Q
●Vitamin E is particularly important for:
A
Normalactivity of sex glands
6
Q
●Blood pressure is controlled by:
A
Adrenal Gland
7
Q
●The deficiency of Vitamin B causes:
A
Beriberi
8
Q
●The expansion for AIDS is:
A
Acquired ImmunoDeficiency Syndrome
9
Q
●Human cloning is permitted in Britain for thepurpose of:
A
Therapeutics
10
Q
●Anaemia occurs due to the deficiency of:
A
Folic acid
11
Q
●For a healthy heart, one needs to take a balanceddiet, adequate sleep and:
A
do right amount ofphysical exercise
12
Q
●An ECG shows the functioning of the:
A
Heart
13
Q
●If the radius of blood vessels of a person decreaseshis/her blood pressure will:
A
increase
14
Q
●Cell or tissue death within a living body is called as:
A
Necrosis
15
Q
●Insufficient blood supply in human body is referredas:
A
Ischema
16
Q
●Typhoid is caused by:
A
Salmonella Typhi
17
Q
●BCG immunization is for:
A
Tuberculosis
18
Q
●The concentration decreases in anaemia?
A
Haemoglobin
19
Q
●Which disease usually spreads through air?
A
Tuberculosis
20
Q
●Small Pox is caused by:
A
Variola Virus
21
Q
●Respiration process requires:
A
Oxygen
22
Q
●A vitamin requires cobalt for its activity. The vitaminis:
A
Vitamin B12
23
Q
●Ringworm is a which type of disease?
A
Fungaldisease
24
Q
●The vitamin most readily destroyed by heat is:
A
Ascorbic acid
25
●The vector that transmits cholera is:
Housefly
26
●A drug which helps in controlling fever is:
Paracetamol
27
●The limb bones of children become bent if there isdeficiency of vitamin:
D
28
●A medicine which promotes the secretion of urine iscalled:
Diuretic
29
●Deamination occurs in liver to:
make use of excessamino acid
30
●Epithelial cells of intestine involved in foodabsorption have on their surface:
Microvilli
31
●Excessive intake of alcohol causes:
Liver cirrhosis
32
●Gastric juice contains:
Pepsin and HydrochloricAcid
33
●Hydrolytic enzymes occur in:
Lysosomes
34
●Carcinoma refers to:
Malignant tumours of theskin or mucous membrane
35
●Common cold is not cured by antibiotics because it is:
caused by a virus
36
●At which stage of HIV infection does one usuallyshow symptoms of AIDS?
When HIV replicatesrapidly in helper T-lymphocytes and damageslarge number of these
37
●Cancer cells are damaged by radiations while othersare not because cancer cells are:
Undergoingrapid divisions
38
●Alzheimer disease in humans is associated with thedeficiency of:
Acetylcholine
39
●Suspension of attenuated pathogen that stimulatesantibody formation is:
Vaccine
40
●Use of anti-histamines and steroids give a quick relieffrom:
Allergy
41
●Motile zygote of Plasmodium occurs in:
Gut offemale Anopheles
42
●Infectious proteins are present in:
Prions
43
●The pathogen Microsporum responsible forringworm disease in humans belongs to the sameKingdom of organisms as that of:
A mould
44
●Where will you look for the sporozoites of themalarial parasite?
Saliva of infected femaleAnopheles mosquito
45
●Goitre can occur as a consequence of all the followingexcept:
Excessive intake of exogenousthyroxine
46
●The immunoglobulin abundant in colostrums is:
IgA
47
●How many variable segments are present in the basicstructure of antibody molecules?
4
48
●Aedes aegypti is a vector for:
Both dengue andyellow fever
49
●To which type of barriers under innate immunity, dothe saliva in the mouth and the tears from the eyes, belong?
Physiological barriers
50
●Antigen binding site in an antibody is found between:
one heavy and one light chain
51
●The complexes formed during immune complexmediated hypersensitivity are removed by:
Eosinophils and Monocytes
52
●Antibodies in our body are complex:
Glycoproteins
53
●Cattle fed with spoilt hay to sweet clover whichcontains dicoumarol or dicumaro?
may suffervitamin K deficiency and prolonged bleeding
54
●Hemozoin is released into blood during the infectionof plasmodium vivax every:
48 hours
55
●Sickle cell anaemia has not been eliminated from theAfrican population because:
It providesimmunity against malaria
56
●Nobel prize for medicine was given for confirmingthe role of Helicobacter pylori in causing:
Peptic ulcer
57
●The letter T in T-lymphocyte refers to:
Thymus
58
●Increased asthmatic attacks in certain seasons arerelated to:
Inhalation of seasonal pollen
59
●The pathogen Microsporum responsible forringworm disease in humans belongs to the sameKingdom of organisms as that of:
A mould
60
●Where will you look for the sporozoites of themalarial parasite?
Saliva of infected femaleAnopheles mosquito
61
●Goitre can occur as a consequence of all the followingexcept:
Excessive intake of exogenous thyroxine
62
●Which Ig is produced in primary immune response?
IgM
63
●The causative agent of mad-cow disease is a:
Prion
64
●Less intake of which of the following vitamins cancause 'Hyperkeratosis'?
Vitamin A
65
lEnterokinase converts:
Trypsinogen into trypsin
66
●In glycolysis ultimately:
glucose is converted intopyruric acid
67
●When breast feeding is replaced by less nutritive foodlow in proteins and calories; the infants below theage of one year are likely to suffer from:
Marasmus
68
●In the absence of enterokinase, the digestion of_______ would be affected in our intestine.
Albumin
69
●Which cells in liver act as phagocytes?
Kupffercells
70
●Keratinization of the skin is prevented by:
VitaminA
71
●Intestinal villi are mainly connected with:
Absorption
72
●Secretin stimulates production of
Pancreatic juice
73
●In duodenum the enzyme which breaks down starchto maltose is:
pancreatic amylase
74
●Lipase acts on:
Triglycerides
75
●Main difference between brown fat and white fat isthat the cells of brown fat
Have moremitochondria
76
●Oxyntic cells in stomach secrete:
Hydrochloricacid
77
●Peyer's patches found in the small intestine are:
Lymphatic tissue
78
●Ptyalin is:
Slightly acidic
79
●Rickets can be prevented by taking:
Calciferol
80
●Seminal plasma in humans is rich in:
Fructose,calcium and certain enzymes
81
●Surgical removal of gall bladder in human beingswould lead to
Impairment of the digestion of fat
82
●Taste buds for bitter taste are found on tongue at:
posterior part
83
●The absorption of glycerol, fatty acids andmonoglycerides takes place by the:
Lymphvessels within the villi
84
●The catalytic efficiency of two different enzymes canbe compared by the:
Km value
85
●Name the substance which is not a product formed inthe small intestine?
Proteins
86
●The characteristics Brunner's glands found induodenum secrete hormones
Secretin,cholecystokinin
87
●The first antibiotic was discovered by:
AlexanderFleming
88
●Ultrasound of how much frequency is beamed intohuman body for sonography?
1-15 MHz
89
●Hybridomas are the fusion product of:
normalantibody producing cell with myeloma
90
●An insect bite may result in inflammation of thatspot. This is triggered by the alarm chemicals suchas:
histamine and kinins
91
●Carcinoma refers to:
Malignant tumours of theskin or mucous membrane
92
●If you suspect deficiency of antibodies in a person, towhich of the following would you look forconfirmatory evidence?
Serum Globulins
93
●Electron beam therapy is a kind of radiation therapyto treat:
certain types of cancer
94
●The organism which causes pneumonia in humanbeings is:
Atrichous
95
●The antibody dependent cytotoxicity is seen in:
Non-compatible blood transfusion
96
●Which test is used to estimate the level of bloodalcohol by analyzing the breath of personsdrinking alcohol?
Dope Test
97
"●The term ""antibiotic"" was coined by:"
SelmanWaksman
98
●The incubation period of Hepatitis 'B' virus is:
30-180 days
99
●What is common to all types of diarrhoeal diseasesand adequate supply of fluids and electrolytesshould be ensured?
Dehydration
100
●A localized inflammatory response appears at the siteof infection causes redness, swelling, pain and heatdue to certain chemical, they are:
Histamineand prostaglandins
101
●Antivenom is used for the treatment of snake bite.The treatment of snake bite by antivenom is anexample of:
artificially acquired passiveimmunity
102
●A person likely to develop tetanus is immunized byadministering:
Preformed antibodies
103
●The phenomenon where tumour cells detach andmigrate to other parts of the body where they giverise to secondary tumours is called:
Metastasis
104
●Which cells in the human body release excessiveamounts of inflammatory chemicals, which causeallergic reactions?
Mast Cells
105
●Study of relationship of organisms to theirenvironment is :
Ecology
106
●All populations within an ecosystem interconnectedto one another are known as:
Community
107
●Major regional ecological community of plants andanimals forms:
Biomes
108
●The actual location or place where an organism livesis:
Habitat
109
●Two richest known sources of edible protein are:
Soyabean and groundnut
110
●Which are the largest fixator of solar energy?
Green Plants
111
●The carbon dioxide content in the air that we exhaleis about:
4%
112
●The role a species plays in a community includingbehavior and influence is:
Niche
113
●Study of a single population's relationship to itsenvironment is called:
Autecology
114
●The biosphere covers about:
16-20 km
115
●Concept of ecological pyramids was proposed by:
Chlares Elton
116
●The term 'Ecosystem' was coined by:
Arthur G.Tansley
117
●Xeric environment is characterized by:
Lowatmospheric humidity
118
●Total amount of living material at the various trophiclevels of a food chain is depicted by pyramids of:
Biomass
119
●About 70% of total global carbon is found in:
Oceans
120
●When the two ecosystems overlap each other, the areais called:
Ecotone
121
●Which of the following statements about food chain iscorrect?
The length of food chains is generallylimited to 3 - 4 trophic levels due to energy loss
122
●The tiny free-swimming animals on the surface ofwater constitute:
Zooplanklton
123
●The biomass available for consumption by theherbivores and the decomposers is called:
Netprimary productivity
124
Greenhouse effect is a:
natural phenomenon
125
●In an area where DDT had been used extensively, thepopulation of birds declined significantly because:
Many of the birds eggs laid, did not hatch
126
●Measuring Biochemical Oxygen Demand (BOD) is amethod used for:
Estimating the amount oforganic matter in sewage water
127
●dB is a standard abbreviation used for thequantitative expression of:
A particularpollutant
128
●Common indicator organism of water pollution is:
Escherichia coli
129
●Industrial melanism is an example of:
Protectiveresemblance with the surrounding
130
●Carbon dioxide is called green-house gas because itis:
Transparent to sunlight but traps heat
131
●Trichoderma harzianum has proved a usefulmicroorganism for:
Bioremediation ofcontaminated soils
132
●The two gases making highest relative contribution tothe greenhouse gases are:
CO2 and CH4
133
●The slow rate of decomposition of fallen logs innature is due to their:
Poor nitrogen content
134
●Transfer of energy in different trophic levels of anecosystem is called:
Bioenergetics
135
●The species, though insignificant in number,determine the existence of many other species in agiven ecosystem. Such species is known as:
Keytone species
136
●The nature's cleaners are:
Decomposers andscavengers
137
●DDT residues are rapidly passed through food chaincausing biomagnification because DDT is:
Liposoluble
138
●The remains of the dead plants and animals is called:
detritus
139
●How many bio-geographical regions are present inIndia?
10
140
●Lime is added to the soil which is too:
acidic
141
●Which one of the following has maximum geneticdiversity in India?
Mango
142
●Darwin's finches are a good example of:
Adaptiveradiation
143
●The least porous soil among the following is a:
Clayey soil
144
●Maximum nutritional diversity is found in the group:
Monera
145
●Sacred groves are specially useful in:
Conservingrare and threatened species
146
●The term Alpha diversity refers to:
Communityand ecosystem diversity
147
●The percentage of forest cover recommended by theNational Forest policy (1988) was:
33% forplains and 67% for hills
148
●Biodiversity of a geographical region represents:
The diversity in the organisms living in the region
149
●Prolonged liberal irrigation of agricultural fields islikely to create the problem of:
Salinity
150
●The greatest problem of water conservation is toreduce the amount of:
Runoff water
151
●An inexhaustible non-conventional universal sourceof energy is:
Solar energy
152
●Wild life conservation aims at:
Maintaining theecological process and the diversity of life
153
●Plants like Aegle marmelos, Ocimum sanctum andFicus religiosa are a group of plants designated as:
Sacred species of plants
154
●Sacred groves are specially useful in:
Conservingrare and threatened species
155
●The 10% law for energy transfer in food chains wasgiven by:
Lindemann
156
●Pyramid of energy in ecosystems is:
Alwaysupright
157
●Savannahs are:
Grasslands with scattered trees
158
●Sal (Shorea robusta) forest is a:
Deciduous Forest
159
●Mass of living matter at a trophic level in an area atany time is called:
Standing Crop
160
●Microbes that break down the complex organicmatter into simple substances like carbon,nitrogen, water etc. are:
Decomposers
161
●The most recently discovered ecosystem is:
Vents
162
●Most hazardous metal pollutant of the automobileexhaust is:
Lead
163
●Ozone day is observed on:
16 September
164
●Sulphur dioxide affects:
All membrane systems
165
●Peeling of Ozone umbrella, which protects us fromUV rays, is caused by:
CFCs
166
●Phosphate pollution is brought about by:
Fertilizers and sewage
167
●Maximum threat to the world is from:
Ozone hole
168
●Sound becomes a hazardous noise pollution if its levelis above:
80 dB
169
●Pollutants having most lasting effect are:
Pesticides
170
●Lead is one of the most serious environmentalpollutants which affects:
Soil
171
●lf there was no CO2 in the atmosphere, the earth'stemperature would be:
Less than the present
172
●Major aerosol pollutant present in the jet planeemission is:
Chlorofluorocarbon
173
●Maximum deposition of DDT will occur in:
Seagull
174
●The ultraviolet radiations in the stratosphere areabsorbed by:
Ozone
175
●Minamata disease is due to pollution of:
Industrialwaste mercury into fishing water
176
●Montreal Protocol aims at:
Reduction of ozonedepleting substances
177
●Most abundant water pollutant is:
IndustrialWastes
178
●Most harmful environmental pollutants are:
Nonbiodegradable chemicals
179
●The atmosphere of big metropolitan cities is pollutedmost by:
Automobile exhausts
180
●Gradual and predictable changes in the speciescomposition of a given area is:
Ecologicalsuccession
181
●The maximum biomass occurs in
Tropical Forests
182
●Animals living at the bottom of the sea are known as:
Benthic
183
●The ecological pyramid which can be inverted in atree eco-system is:
Pyramid of Number
184
●Energy flow in ecosystem is:
uni-directional
185
●Which is the reason for highest biomass in aquaticecosystem?
Bethonic and Borwn algae
186
●The average trophic efficiency of transfer of energyfrom one trophic level to the. higher trophic levelis called:
Linderman's trophic efficiency rule
187
●In a comparative study of grassland ecosystem andpond ecosystem, it may be observed that:
theabiotic components are almost similar
188
●Biotic factors refer to:
Living organisms
189
●In an ecosystem, the main source of energy is:
Solar Energy
190
●Abiotic components include:
Atmosphere,Hydrosphere and Lithosphere
191
●Sequence of changes in community and its non-livingenvironment over a period of time is:
Succession
192
●Plants growing in xeric conditions are called:
Xerophytes
193
●Lichen and algae form:
Pioneers community
194
●Diverse and stable community at the end ofsuccession is:
Climax community
195
●Secondary succession starts from:
From remains ofprevious ecosystem
196
●Which term is used for Primary succession starting ina pond?
Hydrosere
197
●Wood forests form the:
Climax community
198
●Disease in living organisms caused by parasites iscalled:
Infestation
199
●Legume plants are the hosts to:
Rhizobium
200
●A dual organism composed of symbiotic associationof an alga living within a fungus myceliium is:
Lichen
201
●Symbiosis relationship in which only one organism isbenefited is:
Commensalism
202
●Sharks may have small fish attached to them called:
Remoras
203
●Over grazing leads to:
Totally barren lands
204
●Oxidation of ammonia or ammonium ions by bacteriain soil is called:
Nitrification
205
●Gross primary production is:
Total amount ofenergy fixed by all plants
206
●Plant biomass is:
Net primary production + Grossprimary production minus respiratory loss
207
●Total solar energy trapped by the producers in anecosystem is:
1%
208
●The major unit of ecology is:
Ecosystem
209
Eco' part of word ecosystem means
Environment
210
●Contamination of water with sewage is indicated bycysts of:
Escherichia coli
211
●Decomposition of domestic wastes under naturalprocesses is called:
Biodegradable pollution
212
●Eutrophication causes decrease in:
Dissolvedoxygen
213
●Eutrophication is often seen in
Fresh water lakes
214
●Fish die in water polluted by sewage due to:
Reduction in O2
215
●Fluoride pollution mainly affects:
Teeth
216
●Gas leaked during Bhopal tragedy was:
Methylisocyanate
217
●Global agreement in specific control strategies toreduce the release of ozone depleting substances,was adopted by:
The Montreal Protoco
218
●Increase in the concentration of pollutants in highertrophic levels is known as:
Biomagnification
219
●Process that supplies food to living things throughdecaying and decomposition is called:
Nutrientcycle
220
●Balance in the nutrient cycle can be upset when:
Decayed nutrients are not returned to the ground
221
●Endangered species are:
Reduced in number
222
●What percentage of our energy requirements are metfrom fossil fuels?
95%
223
●Driving force for all the cycles in ecosystem is:
Sun
224
●Tides are caused by:
Gravitational pull of sun
225
●Wind blows from area of:
High pressure to lowpressure
226
●Hot substance is escaped from inside the earth in theform of:
Volcanoes, Hot Springs and Geysers
227
●In oceans of tropical regions:
Temp of surfacewater is 25 degree C and 5 degree C at depth
228
●The study of human population and things that affectthem is:
Demography
229
●Replantation of plants in the areas where they werepresent earlier is called:
Reforestation
230
●Establishment of new forests where no forests existedpreviously is called:
Afforestation
231
●About half of the rain which falls in tropical forestscomes from:
Transpiration of plants
232
●Short-term fluctuations in temperature, cloud cover,wind and precipitation is known as:
Weather
233
●Diseases caused by UV rays in humans:
Cataractsand Night Blindness
234
●Sun rays are reradiated from the earth's surface inthe form of:
Long wave radiations
235
●Incomplete burning of carbon compounds causerelease of:
Carbon monoxide
236
●Algal bloom is also called as:
Eutrophication
237
●The chemical wastes from industry is called:
Industrial effluents
238
●Pesticides and fertilizers are also called:
Agrochemicals
239
●Which are more susceptible to attacks of pests?
Monocultures
240
●Coniferous forests located at high altitude are called:
Alpine
241
●Northern coniferous forests are called:
Taiga
242
●Temperature of temperate deciduous forests is:
4-30 degree celsius
243
●Productivity of an ecosystem is indicated by:
Number of plants in that ecosystem and thedensity of that ecosystem
244
●Competition is severe in a population that has adistribution which is:
Irregular
245
●A disease affecting industrial workers is:
Silicosis
246
●BOD of a pond is related to ______ in per unitvolume of water.
All the microbes
247
●In a population, if the rate of addition of newmembers is higher than the rate of individualslost, it shows:
Exponential Growth
248
●Addition of phosphates and nitra-tes/fertilizers intowater leads to:
Nutrient enrichment(eutrophication)
249
●Attack of asthma in certain persons may be due to:
Inhalation of some air borne pollen
250
●Biochemical Oxygen Demand (BOD) in a river water:
Increases when sewage gets mixed with river water
251
●BOD is connected with:
Microbes and organicmatter
252
●Carbon monoxide is a pollutant because it:
Reactswith hemoglobin
253
●As it travels along the food chain, the concentrationof DDT:
Increases
254
●A chemical harmful released by Chlorofluorocarbonto ozone is:
Chlorine
255
●CO emitted by automobiles prevents O-transport tobody tissues by:
Forming a stable compoundwith hemoglobin
256
●In an ecosystem Biotic factors affect the survival ofan organism in that ecosystem. They include:
competition for food and water and competitionfor shelter
257
●Plant succession occurring in a sandy area is:
Psammosere
258
●The maximum amount of water that a soil can hold,by capillary action is called:
Field capacity
259
●In ecological succession from pioneer to climaxcommunity, the biomass shell:
Increasecontinuously
260
●Individuals of a species which occur in a particulararea constitute:
Population
261
●The role of an organism in the ecological system isknown as:
Interaction
262
●Information about birth rate, death rate, sex ratio,age distribution etc. of a population is obtainedfrom:
Life Table
263
●Insectivorous plants are adopted to soils:
Deficientin nitrogenous compounds
264
●Large Woody Vines are more commonly found in:
Tropical Rainforests
265
●Organisms that can tolerate and thrive in a widerange of temperatures are called:
Eurythermal
266
●The correct statement is:
Tropical rain forests aredisappearing fast from developing countries suchas India
267
●Deserts, grasslands, forests and tundra are theexamples of:
Biomes
268
●Plant species having a wide range of geneticaldistribution evolve into a local population knownas:
Ecotype
269
●The Place where organism lives and performs its dutyis known as:
Niche
270
●The rate of formation of new organic matter byrabbit in a grassland, is called
SecondaryProductivity
271
●The upright pyramid of number is absent in:
Forest
272
●The type of ecosystem with the highest mean plantproductivity is:
Tropical Rain forest
273
●In an aquatic ecosystem, the trophic level equivalentto cows in grasslands is:
Zooplankton
274
●Bell-shaped polygonal pyramid indicates:
Moderate percentage of young individuals
275
●The age of pyramid with broad base indicates:
High percentage of young individuals
276
●Eutrophication is:
Adequate nutrition acceleratedby human activities
277
●In polluted lake which organisms dominate thecommunity:
Blue green algae
278
●Grass land in tropic climates with woody trees iscalled:
Savanna
279
●Evolution of vascular bundles in plants and skeletonin animals is an adaptation for:
Terrestrialecosystem
280
●Development of bark in plants and skin in animals isa method for:
Reducing water loss
281
●Zone of lake water which is of open water near thesurface is:
Limnetic
282
●Mountains of Koh Hindukush come under:
Tundra
283
●End of earth' is related to:
Tundra
284
●The Species structure and diversity index of an area,biomass and Autotrophic and heterotrophiccomponents constitute:
Community
285
●Which factor of ecosystem includes plants, animalsand microorganisms?
Biotic factors
286
●A population with equal number of births and deathswill show:
Plateau phase
287
●A terrestrial animal must be able to:
Conservewater
288
●Adaptation to low temperature and freezing inanimals occurs due to the production of:
Antifreeze
289
●An association of individuals of different speciesliving in the same habitat and having functionalinteractions is:
Biotic community
290
Animals that have adapted themselves to live in desertsare known as:
Xerocoles
291
●Association between sea Anemone and Hermit crabin gastropod shell is that of:
Commensalism
292
●Biotic potential is increase in population under:
Optimum conditions
293
●CAM helps the plants in:
conserving water
294
●The abundance of a species population within itshabitat is called:
Niche density
295
●Competition is most severe between two:
Closelyrelated species growing in the same habitat
296
●When one animal copies the appearance, actions, orsounds of another animal to avoid predators, it iscalled:
Mimicry
