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23201.

Question : A person injured in a road accident and requiring an urgent immune response was brought to a doctor. What kind of immunity was provided to the patient?

Answer»

SOLUTION :PASSIVE IMMUNITY
Discussion
23202.

Question : A person injured in a road accident and requiring an urgent immune response was brought to a doctor. What did the doctor immediately do?

Answer»

SOLUTION :GIVE INJECTION of ATS.
Discussion
23203.

Question : A person has blue eyes ,lt means

Answer»

his retinais blue COLOURED
his choroid REFLECTS blue LIGHT
IRIS are blue coloured
eyelashes are bluecoloured

Answer :C
Discussion
23204.

Question : A person has to perform crosses for the purpose of studying inheritance of a few traits/characters. What should be the criteria for selecting the organisms?

Answer»

SOLUTION : Criteria for SELECTING the organism are : (i) Shorter life spanof an organism (ii) They should bear large number of progeny. (iii) Clear differentiation of sex/traits(EASILY identified traits) (iv) Many type of hereditary variations (v) AVAILABILITY of pure LINES.
Discussion
23205.

Question : A person has impaired nervous system and signs of madness due to continued intake of metal-contaminated water. The metal is :

Answer»

Iron
Lead
Mercury
Lithium

Answer :C
Discussion
23206.

Question : A person got injured in the head and afterwards. was not able to feel hot, cold and pain sensations. Which of the following structures of cerebrum probably got injured?

Answer»

FRONTAL lobe
Temporal lobe
Occipital lobe
Parietal lobe

Answer :D
Discussion
23207.

Question : A person got irritation while applying chemical dye. What would be your suggestion for alternative ?

Answer»

Solution :If a GREY haired person is allergic on using chemical dyes then he can go for NATURAL dyes like Henna. Henna is an organic DYE obtained from leaves and YOUNG shoots of Lawsonia inermis. The principle colouring matter is .lacosone. which is HARMLESS and causes no irritation on skin.
Discussion
23208.

Question : A person excretes more and dilute urine but amount of glucose in urine is absent. The person is suffering from -

Answer»

DIABETES insipidus
Diabetes mellitus
Myasthenia gravis
Cushing syndrome

Answer :A
Discussion
23209.

Question : A person free of disease is not necessarily healthy. Why?

Answer»

Solution :HEALTH is a state of complete PHYSICAL, mental and social WELL being and not MERELY absence of disease.
Discussion
23210.

Question : A person entering an empty room suddenly find a snake right in front on opening the door.Which one of the following is likely to happen in his neuro-hormonal control system?

Answer»

HYPOTHALAMUS ACTIVATES the parasympathetic division of brain
Sympathetic nervous SYSTEM is ACTIVATED releasing epinephrine and norepinephrin from adrenal cortex
Sympathetic nervous system is activated releaseing epinephrine and norepinephrine from adrenal medulla
Neurotransmitters diffuse rapidly across the cleft and transmit a nerve impulse

Answer :C
Discussion
23211.

Question : A person consulted a doctor and complained about slight pain and swellings in the genital organ.What is this problem?

Answer»

SOLUTION :The PERSONS is AFFECTED by STDS.
Discussion
23212.

Question : A person consulted a doctor and complained about slight pain and swellings in the genital organ.Is it curable?

Answer»

SOLUTION :YES, EARLY DIAGNOSIS of STDs is CURABLE
Discussion
23213.

Question : A person consulted a doctor and complained about slight pain and swellings in the genital organ. What are the precautions to be taken to avoid this disease?

Answer»

SOLUTION :Avoid sex with UNKNOWN ormultiple partners
Use condom during coitus
Early DIAGNOSIS of the DISEASES is CURABLE.
Discussion
23214.

Question : A person complained to the doctor about the myocardial infraction he suffered and about a doctor he consulted earlier. The earlier doctor told about curing of the diseases using microbes. Will the doctor support the earlier doctor or not? Substantiate your answer.

Answer»

Solution :Yes. The doctor will support the earlier doctor because streptokinase produced by streptococcus is MODIFIED by genetic engineering and is USED as a clot buster for removing CLOTS from BLOOD vessels of patients who have undergone HEART attack.
Discussion
23215.

Question : A person breathes in some volume of air by forced inspiration after having a forced expiration. This quantity of air taken in is

Answer»

TOTAL LUNG capacity
Tidal volume
Vital capacity
Inspiratory capacity

Answer :C
Discussion
23216.

Question :A pedigree is shown below for a disease that is autosomal dominant. What would be thegenetic make up of the first generation ?

Answer»

AA,Aa
Aa,aa
Aa,AA
Aa,Aa

Solution :As the disease is AUTOSOMAL dominant hence, the MALE parent who is normalm must have the homozygous recessive GENOTYPE i.e., aa. The affected female can have either Aa or AA genotype. If the genotype is AA, all the progenies will SURELY be DISEASED but if the genotype is Aa there is 50 % chance of having normal offsprings. But unfortunately the couple has produced only affected progeny and each of them must have the genotype Aa.
Discussion
23217.

Question : A pea with white flowers was crossed to another pea which is also white flower plant. When selfed the F_(2) generation produced purple and white in the ration 9:7. The reason for the results is that

Answer»

It is TYPICAL monohybrid Mendalian ratio
Purple flower colour is dominant over the white
It is a COMPLEMENTARY factor
None of the above

Answer :C
Discussion
23218.

Question : A peptide hormone secreted from the atrial walls of heart in response to increase in blood pressure is called

Answer»

Relaxin
Renin
Atrial natriurelic factor
Vasopressin

ANSWER :C
Discussion
23219.

Question :A pea plant with purple flowers was crosSed with white flowers producing 60 plants with only purple flowers.On selfing, these plants produced 482 plants with purple flowers and 162 with white flowers. What genetic mechanism accounts for these results.

Answer»

SOLUTION :Genetic Mechanism - Prinicipal of Dominance : Mendel STUDIED inheritance of SEVEN constrasting traits. One trait dominates over the other and is expressed that, generation, where as the other is not expressed and remains recessive.
The results of `F_2` generation, however showedt hat the recessive character re appears and In a definite ratio, The `T_2` ratio in each experiment was invariably 3:1 ratio. Approximately the three fourths of them were dominant type and one fourth were the recessive type.
The RESULT is obtained DUE to segregation of the alleles at the time of gametogenesis. The alleles remain together is a zygote but during gamete formation, they segregate such that the gametes carry only one allenle
Discussion
23220.

Question : A pea plant homozygous for yellow round seed is crossed with its recessive parents. Calculate the phenotypic and genotypic ratio the help of checker board .

Answer»

Solution :Law of INDEPENDENT Assortment :
(1) The law of independent assortment states that two parents differing from each other in two or more pairs of contrasting characters are CROSSED, then the inheritance of one PAIR of characters is independent of that of the other pair of characters.
(2)From the results of the dihybrid cross, it is obvious that the character of yellow colour of the seed is in no WAY linked with the round shape of the seed. SIMILARLY the green colour of the seed is not linked with the wrinkledshape of the seed. Thisis due to the fact that in the abovecross, the two pairs of characters segregate independently. otherwords, there is independent assortmentof characters during inheritance.
Discussion
23221.

Question : A pea plant homozygous for yellow round seed is crossed with its recessive parents . Calculate the phenotypic and genotypic ratio with the help of checker board .

Answer»

Solution :

Genotypic Ratio : `YYRR to 1`
`YYRr to 2`
`YyRR to 2`
`YyRr to 4`
`Yyrr to 1 `
`Yyrr to 2 `
`yy"RR"` to 1`
`yyRr to 2 `
`yyrr to1`.
Discussion
23222.

Question : A patient was hospitalized with fever and chills. Merozoitees were observed in her blood. What is your diagnosis ?

Answer»

SOLUTION :Appearance of merozoites in a PATIENTS BLOOD may be an INDICATION of malarial parasite-plasmodium.
Discussion
23223.

Question : A patient scheduled ''for surgery confides in his nurse the night'' before that he is ''terribly scared''. Which of the following indicate(s) increased sympathetic activity in this patient?

Answer»

Patient complains that his MOUTH FEELS DRY
patient's gown is MOIST with perspiration
Patient APPEARS pale

Answer :D
Discussion
23224.

Question : A patient has swelling around eyes and large as well as popping eye balls.This patient is probably suffering from

Answer»

EXCESSIVE SECRETION of thyroxine
excessive SECRECTION of calcitonin
less secretion of thyroxine
less secrection of calcitonin

Answer :A
Discussion
23225.

Question : A patient of diabetes mellitus excretes glucose in urine even when he is kept in a carbohydrate free diet. It is because

Answer»

fats are catabolised in adipose tissues to form glucose
amino acids are catabolised in kidney to form eniotions. Glucose
amino acids are discharged in BLOOD STREAM euphoria from liver
glycogen from muscles is released in blood perceptions and hallucinations. Stream

Solution :A patient of diabetes mellitus is unable to produce or fail to utilize INSULIN hormone. Thus, he is unable to store glucose in the form of glycogen. HENCE, he started to excrete glucose in the urine. A patient is kept in carbohydrate free diet YET he excretes glucose in urine because a high level of glucose not only depends on dictary carbohydrates but also on glycogenolysis (degradation of glycogen in the liver) and gluconeogenesis (breakdown of fats into glucose in adipose tissues and conversion of muscle lactate into glucose via Cori cycle).
Discussion
23226.

Question : A patient is advised to intake omega-3 fatty acid in his/her diet, he/she should eat which of thefollowing fish :-

Answer»

POMFRET
CATLA
ROHU
CALBASU

ANSWER :A
Discussion
23227.

Question : A patient brought to a hospital with myocardial infarction is normally immediately given

Answer»

PENICILLIN
STREPTOKINASE
cyclosporin-A
statins

Solution :streptokinase
Discussion
23228.

Question : A particular species of plant produces light, non-sticky pollen in large numbers and its stigmas are long and feathery. These modifications facilitate pollination by(A) Insects(B) Water(C) Wind(D) Animals

Answer»

Insects
Water
Wind
Animals

Solution :Plants use both types of agents as biotic (animals) and abiotic (wind and water) for pollination. Most of the plants use biotic agents for pollination. The pollination by wind is very common in pollination occurred by abiotic agents. For wind pollination, small, lighter and dry pollen GRAIN is necessary. So they can be transported in wind currents. They have sometimes stamens to be seen nicely from outer side (so pollen grains can be released easily in wind CURRENT) and sometimes there are large hairy stigas so can absorb/accept pollen grain present in wind easily. In grass ALSO pollination by wind is common. This type of pollen grain does not get pollinated by other three options. (i) The pollination occurred by water is heardly seen in flowering plants but it is habituated in aqueous plants. (ii) ZOOPHILY is a pollination occurred by animals. (iii) Anemophilly is a pollination occurring by insects is commonly seen in animals
Discussion
23229.

Question : A particle species of plant produces light, non sticky pollen in large numbers and its stigmas are long and feathery these modification facilitate pollination by

Answer»

insects
Water
Wind
Animals

ANSWER :C
Discussion
23230.

Question : A particular enzyme molecule interacts with a specific substrate molecule is: explained by

Answer»

Enzyme-substrate concept
Activation ENERGY concept
Destroyed and re-synthesised concept
Lock and KEY concept

Answer :D
Discussion
23231.

Question : A part of Ti-plasmid transferred into plant cell DNA is called

Answer»

B-DNA
A-DNA
T-DNA
C-DNA

Answer :C
Discussion
23232.

Question : _________contains bacteria, that helps in digestion of cellulose in a rabbit.

Answer»

SOLUTION :CAECUM.
Discussion
23233.

Question : A part of life cycle of Plasmodium is given below. Answer the questions on the basis of the life cycle. Name the most fatal species of Plasmodium and mention the role of 'A' in the life cycle of Plasmodium.

Answer»

Solution :Plasmodium falciparum, .A.-Gametocytes of Plasmodium ENTER the MOSQUITO when it BITES a MALARIA patient and takes the blood meal.
Discussion
23234.

Question : A part of life cycle of Plasmodium is given below. Answer the questions on the basis of the life cycle. Name the organ 'B' and the cells being released from it.

Answer»

Solution :SALIVARY GLAND of female ANOPHELES mosquito, Sporozoites of Plasmodium
Discussion
23235.

Question : A part of life cycle of Plasmodium is given below. Answer the questions on the basis of the life cycle. Name the event 'C' and the organ where this event occurs

Answer»

SOLUTION :.C.- FERTILISATION, INTESTINE of MOSQUITO
Discussion
23236.

Question : A parasite will be called successful parasite which ?

Answer»

Grows rapidly
Reproduces fast
Makes MINIMUM demands from its host
STICKS to host for long

Solution :A SUCCESSFUL PARASITE is the one which makes minimum demands from its host.
Discussion
23237.

Question : A panel of planning commission experts to discuss the infrastructural needs for the years to come. Will the number of people belonging to different age groups help them? Explain how.

Answer»

Solution : The relative proportion of the individuals of various age groups, in a population is called the age structure. Based on the distribution of age groups in the population, the population is of three DIFFERENT types, viz. growing, steady or declining.
If the population consists of large number of pre-REPRODUCTIVE age groups, then such population grows with a rapid rate. If the pre-reproductive and reproductive groups are same then the population growth remains steady. By if the population has large number of post-reproductive group and small number of pre-reproductive group then the population shows declining rate.
THEREFORE, the planning commission will have to take into consideration whether the population is growing, steady or declining which is based on number of people belonging to different age groups. This data will help them to discuss the INFRASTRUCTURAL needs for the years to come.
Discussion
23238.

Question : A pair of genes is said to be linked if their recombination frequency in test cross is

Answer»

0.75
0.5
1
Lower than 50%

ANSWER :D
Discussion
23239.

Question : A pair of homologous chromosomes

Answer»


ANSWER :BIVALENT
Discussion
23240.

Question : A pair of genes are linked if their recombination frequency in test cross is

Answer»

LOWER than 50%
0.5
0.75
1

Answer :A
Discussion
23241.

Question : A pair of contrasting characteristics is called :

Answer»

Phenotype
Genotype
ALLELE
Gene

Answer :C
Discussion
23242.

Question : A pair of fungal disease………

Answer»

AMOEBIASIS,kala-azar
Candidiasis,ATHLETE's foot
Ascariasis,Filariasis
Poliomyelitis ,Amoebiasis

Answer :A::B::C::D
Discussion
23243.

Question : [A] : Organisms that bear large number of common amino acid sequence may be con- sidered to be more closely related than to those with greatly different amino acid se- quence.[R]: The proteins are chemical finger prints of evolutionary history because they bear amino acid sequences that have changed as a re- sult of genetic change

Answer»

If both A and R are true and R is the CORRECT EXPLANATION of A
If both A and R are true but R is not the correct explanation of A
If A is true and R is FALSE
If both A and R are false

Answer :A
Discussion
23244.

Question : [A]: 'Ontogeny recapitulates phylogeny' was the concept put forward by Haeckel.[R]: The embryonic stages show the course of evolution which an adult has gone through during development

Answer»

If both A and R are TRUE and R is the correct EXPLANATION of A
If both A and R are true but R is not the correct explanation of A
If A is true and R is FALSE
If both A and R are false

ANSWER :A
Discussion
23245.

Question : A number of K-40 atoms explode in human body every second. The number of

Answer»

`3800`
`38,000`
`380,000`
`3,800,000`

SOLUTION :N//A
Discussion
23246.

Question : A nutritionally wild type organisms, which does not required any additional growth supplement is known as

Answer»

PHENOTYPE
Holotype
Auxograph
Prototroph

Answer :D
Discussion
23247.

Question : A number of humam activitescontributeto deforestation a) write anyone suchactivity b) writethe consequences of deforestation.

Answer»

SOLUTION :a) CUTTING TREES for timberand FIREWOOD
Discussion
23248.

Question : A nucleotide consists of a _____ a _____ and a nitrogen base.

Answer»


ANSWER :SUGAR , PHOSPHATE
Discussion
23249.

Question : a nucleosome is a portion of the chromonema or chromotene containing:

Answer»

only HISTONES
both DNA and histones
only DNA
both DNA and RNA

Answer :B
Discussion
23250.

Question : A nucleoside is composed of …………………….

Answer»

SUGAR and PHOSPHATE
NITROGEN BASE and Phosphate
Sugar and Nitrogen base
Sugar, Phosphate and NITROGENOUS base

Solution :Sugar and Nitrogen base
Discussion