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

Whic from the following is the correct classification?

1. Kingdom → Order → Class → Family
2. Kingdom → Phylum → Class → Order
3. Kingdom → Class → Species → Family
4. Kingdom → Class → Phylum → Family

✅ Correct Answer: 2

Which from the following is NOT the function of Enzymes?

1. speed up chemical reaction
2. digest food substances
3. involved in cellular respiration
4. maintain healthy epithelial tissues

✅ Correct Answer: 4

The small intestine consists of

1. duodenum, jejunum and ileum
2. duodenum, caecum and ileum
3. duodenum, jejunum and rectum
4. caecum, colon and rectum

✅ Correct Answer: 1

Red Blood Cells are produced by the

1. kidneys
2. Lungs
3. Bone Marrow
4. Lymph

✅ Correct Answer: 3

The lifespan of platelets is ___ days.

1. 5
2. 6
3. 100
4. 120

✅ Correct Answer: 2

The salt and water balance of the body fluid is maintain by the

1. Kidneys
2. Urinary bladder
3. Lymph
4. Chloroplasts

✅ Correct Answer: 1

The pH concentrations at which maltase is least effective are

1. 1 and 7
2. 1 and 14
3. 7.5 and 14
4. 10 and 14

✅ Correct Answer: 2

Most cells lacking a cell wall also lack

1. mitochandria
2. chloroplasts
3. a vacuole
4. a Golgi complex

✅ Correct Answer: 3

The Hardy-Weinberg principle applies to

1. locomotion
2. population genetics
3. blood transportation
4. the cell theory

✅ Correct Answer: 2

Genetic information is transmitted from DNA to

1. the sites of protein synthesis
2. proteins
3. amino acids
4. digestive enzymes

✅ Correct Answer: 1

The part of brain which is responsible for long term memory and learning is

1. hippocampus
2. medulla
3. amygdala
4. hypothalamus

✅ Correct Answer: 1

The number of thoracic vertebrae

1. 7
2. 12
3. 9
4. 5

✅ Correct Answer: 2

The anti-diuretic hormone acts on which part of nephron to cause re-absorption of water?

1. proximal convoluted tubule
2. loop of henle
3. collecting duct
4. distal convoluted tubule

✅ Correct Answer: 3

When a single gene has multiple phenotypic effects the phenomena is called

1. pleiotropy
2. codominance
3. over dominance
4. epistasis

✅ Correct Answer: 1

The duration of G-2 phase is

1. 10 hrs
2. 30 min
3. 9 hrs
4. 4.5 hrs

✅ Correct Answer: 4

The initiation codon is

1. AGU
2. UAA
3. UAG
4. AUG

✅ Correct Answer: 4

Bony fishes have brain with how many pair of cranial nerves?

1. 10
2. 11
3. 14
4. 12

✅ Correct Answer: 1

The most common rust fungi species are

1. ustilago
2. puccinia
3. aspergillus
4. penicillium

✅ Correct Answer: 2

Kelps belong to which phylum?

1. rhodophyta
2. chlorophyta
3. phaeophyta
4. pyrrophyta

✅ Correct Answer: 3

Super blue green algae or expensive pond scum contain __________ protein.

1. 55%
2. 75%
3. 45%
4. 60%

✅ Correct Answer: 4

Cohesion tension theory is given by

1. Morgan
2. Dixon
3. Robert
4. Sacks

✅ Correct Answer: 2

Air sacs in most of the birds are

1. 6
2. 11
3. 9
4. 12

✅ Correct Answer: 3

Air spaces in leaf comprises total volume of

1. 40%
2. 45%
3. 50%
4. 55%

✅ Correct Answer: 1

In class crustacea of phylum arthropoda sexes are

1. separate
2. hermaphrodite
3. separate and hermaphrodite both
4. none of them

✅ Correct Answer: 1

First complete seed appears in

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

✅ Correct Answer: 3

Major cause of chlorosis in plants is shortage of

1. magnesium
2. sulphur
3. nitrogen
4. iron

✅ Correct Answer: 4

All are the deformities of skeleton caused by nutritional deficiencies except

1. osteomalacia
2. rickets
3. microcephaly
4. none of them

✅ Correct Answer: 3

Colour blindness is

1. x-linked recessive trait
2. y-linked recessive
3. y-linked dominant
4. x-linked dominant

✅ Correct Answer: 1

Which of the following is not sex-linked recessive

1. colour blindness
2. haemophilia
3. tfm syndrome
4. hypophosphatemic ricket

✅ Correct Answer: 3

Female reproductive cycle is completed in

1. 27 days
2. 28 days
3. 26 days
4. 29 days

✅ Correct Answer: 2

All are paired facial bones except

1. maxilla
2. nasal
3. lacrimal
4. mandible

✅ Correct Answer: 4

Which of the following is not an endotherm

1. bird
2. mammals
3. amphibian
4. insects

✅ Correct Answer: 3

In bud condition the upper surface of leaf shows more growth than lower surface in

1. epinasty
2. hyponasty
3. nutation
4. circumnutation

✅ Correct Answer: 1

Which one of the following is not a neurotransmitter

1. acetylcholine
2. histine
3. adrenaline
4. serotonin

✅ Correct Answer: 2

The maximum speed of nerve impulse recorded in human is

1. 80 m/s
2. 100 m/s
3. 120 m/s
4. 140 m/s

✅ Correct Answer: 3

New cells were formed by division of previously existing living cells, statement given by

1. Pasteur
2. Lorenz oken
3. Robert hooke
4. Rudolph virchow

✅ Correct Answer: 4

Capsid of herpes virus contain number of capsomers

1. 162
2. 252
3. 165
4. 152

✅ Correct Answer: 1

Hepatitis A virus is

1. RNA enveloped
2. RNA non-enveloped
3. DNA envelope
4. DNA non-envelope

✅ Correct Answer: 2

Antibiotic that can cause allergic reactions

1. tetracycline
2. streptomycin
3. penicillin
4. terramycin

✅ Correct Answer: 4

Which is used as pollution indicator

1. kelp
2. spirogira
3. oscillatoria
4. aspergillus

✅ Correct Answer: 3

Which is used to lower blood cholesterol

1. cyclosporine
2. lovastatin
3. ergotine
4. penicillin

✅ Correct Answer: 2

Ringworm and athletes foot are superficial fungal infection caused by certain

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

✅ Correct Answer: 4

Paraphyses is a character of class

1. anthocerotae
2. hepaticopsida
3. bryopsida
4. psilopsida

✅ Correct Answer: 3

The family Solanaceae include all except

1. sweet pea
2. potato
3. tobacco
4. tomato

✅ Correct Answer: 1

Percentage of photosynthesis carried out by terrestrial plants

1. 11%
2. 10%
3. 20%
4. 70%

✅ Correct Answer: 2

Which thing in the gall bladder precipiatate to form gall stones

1. bile salts
2. bile acids
3. protein
4. cholesterol

✅ Correct Answer: 4

Energy trapped by producers in the ecosystem is

1. 1%
2. 99%
3. 75%
4. 65%

✅ Correct Answer: 1

Phytoplanktons include all except

1. protista
2. bacteria
3. algae
4. crustaceans

✅ Correct Answer: 4

The number of chromosome in mouse is

1. 20
2. 26
3. 40
4. 32

✅ Correct Answer: 3

Nicotine causes all of the following effects except

1. increase blood pressure
2. increase heart beat
3. increae digestive mobility
4. increase the action of acetylcholine

✅ Correct Answer: 4

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MCAT BIOLOGY MCQ SET 1