Olete.in – MCQs, Mock Tests & Government Job Prep

Uterus opens into vagina through

1. cervix
2. urethra
3. clitoris
4. none of these

✅ Correct Answer: 1

The total gestation period is of

1. 265 days
2. 275 days
3. 280 days
4. 285 days

✅ Correct Answer: 3

The base pairs in DNA structure are far apart at a distance of

1. 2nm
2. 0.34nm
3. 3.4mm
4. both c and d

✅ Correct Answer: 2

The specialized structure including aster and spindle is called

1. centriole
2. astral microtubules
3. mitotic apparatus
4. all of these

✅ Correct Answer: 3

Human genome consists of base pairs

1. 3 billion
2. 3 million
3. 3 lac
4. 3 thousand

✅ Correct Answer: 1

Vestigial organs are example of

1. comparative anatomy
2. homology
3. analogy
4. all of these

✅ Correct Answer: 2

All are hyphal fungi except

1. mushrooms
2. morels
3. puff balls
4. yeast

✅ Correct Answer: 4

The cause of sleeping sickness is

1. plasmodium
2. tse-tse fly
3. trypanosoma
4. virus

✅ Correct Answer: 3

Reptiles flourished throughout

1. mesozoic era
2. cenozoic era
3. devonian era
4. jurassic era

✅ Correct Answer: 1

Each mesophyll cell have about chloroplast

1. 20-100
2. 40-100
3. 10-100
4. 50-100

✅ Correct Answer: 1

The chemical link between catabolism and anabolism is

1. ATP
2. oxygen
3. nitrogen
4. all of these

✅ Correct Answer: 1

All are diseases related to nutrition but which one is neurotic disorder also

1. dyspepsia
2. obesity
3. piles
4. bulimia nervosa

✅ Correct Answer: 4

The no. of spiracles in cockroach thorax is

1. 2
2. 4
3. 8
4. 10

✅ Correct Answer: 3

All are example of fish except

1. silver fish
2. whale
3. shark
4. trout

✅ Correct Answer: 1

Which one is present in plant cells only

1. mitochondria
2. golgi bodies
3. vacuoles
4. plastids

✅ Correct Answer: 4

Which cell is a anucleated cell

1. muscle cell
2. white blood cell
3. red blood cell
4. brain cell

✅ Correct Answer: 3

Mesosomes are internal extensions of

1. cell membrane
2. cell wall
3. nucleus
4. vacuole

✅ Correct Answer: 1

The small size and localized tumors are called

1. malignant
2. benign
3. both a and b
4. none of these

✅ Correct Answer: 2

A tiny part of DNA controlling a sprcific character is called

1. base pair
2. allele
3. gene
4. nucleotide

✅ Correct Answer: 3

The deficiency of thyroid secretions in adults produces

1. goiter
2. myxoedema
3. cretinism
4. graves disease

✅ Correct Answer: 2

Skeletal muscles are joined to bones with the help of

1. tendon
2. ligament
3. connective tissue
4. both a and b

✅ Correct Answer: 1

Panting the evaporative mechanism is most prominent in

1. elephant
2. bat
3. dog
4. fish

✅ Correct Answer: 2

To excrete 1 g of urea nitrogen water require is

1. 500ml
2. 5000ml
3. 50 cubic centimetre
4. 5000 cubic centimetre

✅ Correct Answer: 2

ome plants deposit strange chemicals in their branches and trunks especially in old xylem as in

1. conifers
2. eucalyptus
3. cactus
4. ebony

✅ Correct Answer: 4

All hormones are amino acids or their derivatives except

1. oxytocin
2. thyroxin
3. epinephrine
4. nor-epinephrine

✅ Correct Answer: 1

Hypothalamus is a part of

1. mid brain
2. hind brain
3. fore brain
4. medulla

✅ Correct Answer: 3

Equisetum is example of

1. lycopsida
2. bryopsida
3. sphenopsida
4. pteropsida

✅ Correct Answer: 3

Which is used to cure ring worm and skin diseases

1. cassia obovata
2. cassia senna
3. cassia fistula
4. cassia alata

✅ Correct Answer: 4

Which physical method cause coagulation of bacterial proteins

1. dry heat
2. moist heat
3. gamma radiation
4. both a and b

✅ Correct Answer: 2

In the structure of DNA the no. of base pairs in each turn is

1. 10
2. 20
3. 34
4. 0.34

✅ Correct Answer: 1

The detachable co-factor is known as

1. prosthetic group
2. activator
3. co-enzyme
4. holoenzyme

✅ Correct Answer: 2

Rate of reaction double after each rise of temperature of

1. 10 centigrade
2. 20 centigrade
3. 10 kelvin
4. 1 kelvin

✅ Correct Answer: 1

The retroviruses are

1. single stranded DNA
2. single stranded RNA
3. double stranded RNA
4. double stranded DNA

✅ Correct Answer: 1

Tests of foraminifera are made of

1. silica
2. carbon
3. calcium
4. all of these

✅ Correct Answer: 2

The major producers in aquatic ecosystem are

1. dinoflagellates
2. euglenoids
3. brown algae
4. diatoms

✅ Correct Answer: 3

Principal decomposers of cellulose and lignin are

1. bacteria
2. fungi
3. algae
4. both a and b

✅ Correct Answer: 4

Simplest of all bryophytes is

1. liverworts
2. bryopsida
3. anthoceropsida
4. both a and b

✅ Correct Answer: 1

The example of ectoparasites except

1. lice
2. fungi
3. tape worm
4. ticks

✅ Correct Answer: 3

Deserts occur in the region where annual rainfall is

1. less than 250 mmm
2. 250-650mm
3. 250-750mm
4. none of these

✅ Correct Answer: 3

All diseases are caused by nutrition deficiencies except

1. scurvy
2. beri beri
3. anemia
4. haemophilia

✅ Correct Answer: 4

In grasshopper the male has chromosome

1. XX
2. XO
3. XXO
4. XY

✅ Correct Answer: 2

Which type of genes do not obey law of independent assortment

1. linked genes
2. mutant genes
3. non-linked genes
4. both a and b

✅ Correct Answer: 1

Which is a universal blood donor

1. O
2. AB
3. AB+
4. none of these

✅ Correct Answer: 1

Who isolated the first restriction enzyme

1. Johns hopkin
2. Morgan
3. Nathans and Arber
4. Hamilton D. Smith

✅ Correct Answer: 4

In acrocentric chromosome the centromere is located at the

1. tip
2. near tip
3. in middle
4. near middle

✅ Correct Answer: 2

Plants growth is least at

1. 35 centigrade
2. 25-30 centigrade
3. 5-10 centigrade
4. 35-40 centigrade

✅ Correct Answer: 3

Fungi store surplus food in form of droplets of

1. protein
2. glycogen
3. lipid
4. both b and c

✅ Correct Answer: 4

Parasexuality phenomena is observed in

1. ascomycota
2. basidiomycota
3. zygomycota
4. deuteromycota

✅ Correct Answer: 4

Fungi which is used to produce soya sauce or soya paste from soya bean is

1. penicillin
2. aspergillus
3. yeast
4. all of these

✅ Correct Answer: 2

Canines are missing in all except

1. deer
2. sheep
3. goat
4. dog

✅ Correct Answer: 4

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MCAT BIOLOGY MCQ SET 2