Biology Mcqs Test Preparation for ECAT & MCAT - Set 10

1)   What is the mode of transmission of Hepatitis virus?

a. Aerosol
b. Parentral (via blood)
c. Skin penetration
d. Unknown
Answer  Explanation 

ANSWER: Parentral (via blood)

Explanation:
No explanation is available for this question!


2)   Which disease can be controlled by vaccination?

a. Measles
b. Cancer
c. Diabetes
d. Heart attack
Answer  Explanation 

ANSWER: Measles

Explanation:
No explanation is available for this question!


3)   Vaccine was first developed by

a. Louis Pasture
b. Edward Jenner
c. Jaber Ibn Hayan
d. Aristotle
Answer  Explanation 

ANSWER: Edward Jenner

Explanation:
No explanation is available for this question!


4)   Which disease has been totally eradicated from the world because of effective vaccination?

a. Measles
b. Polio
c. Small pox
d. Hepatitis
Answer  Explanation 

ANSWER: Small pox

Explanation:
No explanation is available for this question!


5)   Which of the following statement is incorrect about antibiotics?

a. They are used against microorganisms
b. They are always effective against bacteria
c. They are used in diseases like tuberculosis and pneumonia
d. They are derived from bacteria only
Answer  Explanation 

ANSWER: They are derived from bacteria only

Explanation:
No explanation is available for this question!


6)   Which treatment is instituted in a cancerous patient:

a. Antibiotic therapy
b. Radiotherapy
c. Gene therapy
d. None of these
Answer  Explanation 

ANSWER: Radiotherapy

Explanation:
No explanation is available for this question!


7)   Which statement is incorrect for cloning?

a. The nucleus of a fertillized egg is replaced by the nucleus from the cell of a fully developed individual
b. Division of a single egg into one or more separate embryos.
c. The individual is the mirror image of the parent organism
d. It involve methods of sexual reproduction
Answer  Explanation 

ANSWER: It involve methods of sexual reproduction

Explanation:
No explanation is available for this question!


8)   Removal or degradation of environmental pollutants or toxic materials by living organisms is called

a. Integrated disease management
b. Hydroponic culture technique
c. Pasteurization
d. Bioremediation
Answer  Explanation 

ANSWER: Bioremediation

Explanation:
No explanation is available for this question!


9)   Which of the following is not a viral disease?

a. Cowpox
b. Mumps
c. Tetanus
d. Small pox
Answer  Explanation 

ANSWER: Tetanus

Explanation:
No explanation is available for this question!


10)   In human body 99% of total mass is formed of

a. 16 bioelements
b. 12 bioelements
c. 10 bioelements
d. 6 bioelements
Answer  Explanation 

ANSWER: 6 bioelements

Explanation:
No explanation is available for this question!


11)   Biological organization is

a. simple
b. advance
c. complex
d. highly complex
Answer  Explanation 

ANSWER: highly complex

Explanation:
No explanation is available for this question!


12)   The arrangement of _____ speaks of the division of labour within cell

a. Molecule
b. Subatomic particles
c. Atoms
d. Organelles
Answer  Explanation 

ANSWER: Organelles

Explanation:
No explanation is available for this question!


13)   Communities are _____ collection of organisms

a. Static
b. Dynamic
c. May be static or dynamic
d. None of these
Answer  Explanation 

ANSWER: Dynamic

Explanation:
No explanation is available for this question!


14)   The number of species of organisms currently known to science is

a. 3500000
b. 3500
c. 2500000
d. 25000000
Answer  Explanation 

ANSWER: 2500000

Explanation:
No explanation is available for this question!


15)   Who coined the term CELL?

a. Schwann
b. Schleiden
c. Robert Hook
d. Both a and b
Answer  Explanation 

ANSWER: Robert Hook

Explanation:
No explanation is available for this question!


16)   Who opposed the idea the cell is an empty space bounded by thick wall?

a. Lorenz Oken
b. Schwann
c. Robert Brown
d. Rudolph Virchow
Answer  Explanation 

ANSWER: Robert Brown

Explanation:
No explanation is available for this question!


17)   Who first observed and thus hypothesized that new cells are formed from previously existing living cell?

a. Theodor Schwann and Schleiden
b. Rudolph Virchows
c. Louis Pasteur
d. Both b and c
Answer  Explanation 

ANSWER: Rudolph Virchows

Explanation:
No explanation is available for this question!


18)   Magnifying power of electron microscope as compared to eye is

a. 500 X
b. 250000X
c. 500000X
d. 250X
Answer  Explanation 

ANSWER: 250000X

Explanation:
No explanation is available for this question!


19)   In cell fractionation various components of cells including its organelles can be isolated in different layers depending upon:

a. Their physical properties like size & weight.
b. Physical properties of the medium like its density.
c. Their electrical properties like their charges
d. Both a and b
Answer  Explanation 

ANSWER: Both a and b

Explanation:
No explanation is available for this question!


20)   Percentage of proteins in cell membrane is

a. 20-40%
b. 40-50%
c. 60-80%
d. 80-100%
Answer  Explanation 

ANSWER: 60-80%

Explanation:
No explanation is available for this question!


21)   Which of the statement about cell membrane is not true?

a. It contains protein molecules embedded in lipid bilayer
b. It is a differentially permeable membrane.
c. It contains charged pores thus ions being charged particles cross cell membrance much easier than neutral particles.
d. It may get infolded to engulf solid or liquid material.
Answer  Explanation 

ANSWER: It contains charged pores thus ions being charged particles cross cell membrance much easier than neutral particles.

Explanation:
No explanation is available for this question!


22)   Movement of the material across the cell membrane which does not requiring expenditure of metabolic energy is called

a. Active transport
b. Passive transport
c. Co-transport
d. Counter transport
Answer  Explanation 

ANSWER: Passive transport

Explanation:
No explanation is available for this question!


23)   The first layer of cell wall which is formed is:

a. Primary wall
b. Secondary wall
c. Middle lamella
d. All of these
Answer  Explanation 

ANSWER: Primary wall

Explanation:
No explanation is available for this question!


24)   Cellulose is the major component of

a. Primary wall
b. Secondary wall
c. Middle lamella
d. all of the above
Answer  Explanation 

ANSWER: Primary wall

Explanation:
No explanation is available for this question!


25)   Strengthening material of prokaryotic cell wall is

a. Cellulose
b. Chitin
c. Inorganic salts silica waxes and ligin
d. Peptidoglycan or Murein.
Answer  Explanation 

ANSWER: Peptidoglycan or Murein.

Explanation:
No explanation is available for this question!


26)   Spherical or tubular membranes which separate the material present in endoplasmic reticulum from that of cytoplasmic material are called

a. Cytosol
b. Cisternae
c. Polysomes
d. Cristae
Answer  Explanation 

ANSWER: Cisternae

Explanation:
No explanation is available for this question!


27)   Whone is not the function of endoplasmic reticulum?

a. Nerve impulse conduction
b. Transport of material
c. Mechanical support
d. Synthesis of conjugated molecules
Answer  Explanation 

ANSWER: Synthesis of conjugated molecules

Explanation:
No explanation is available for this question!


28)   Factory of ribosomal systhesis is

a. Cytoplasm
b. Nucleus
c. Nucleolus
d. Endoplasmic reticulum
Answer  Explanation 

ANSWER: Nucleolus

Explanation:
No explanation is available for this question!


29)   60S and 40S subunit combine to form ______ particle

a. 100 S
b. 90 S
c. 80 S
d. 70 S
Answer  Explanation 

ANSWER: 80 S

Explanation:
No explanation is available for this question!


30)   A group of ribosomes attached to mRNA is known as

a. Polymer
b. Polypeptide
c. Polysomes
d. Monomer
Answer  Explanation 

ANSWER: Polysomes

Explanation:
No explanation is available for this question!


31)   Pancreas produces secretory granules that help in digestion. These granules after passing through endoplasmic reticulum are pinched off from ______ surface of Golgi apparatus:

a. Forming face
b. Maturating face
c. Any of them
d. None of these
Answer  Explanation 

ANSWER: Maturating face

Explanation:
No explanation is available for this question!


32)   During digesting the phagocytosed food particles vesicles formed from fusion of phagocytic vacuole with the enzymes secreted by Golgi apparantus are called

a. Lysosomes
b. Primary lysosomes
c. Secondary lysosomes
d. Food vacuole
Answer  Explanation 

ANSWER: Secondary lysosomes

Explanation:
No explanation is available for this question!


33)   Autophagosomes are

a. Those lysosomes which eat parts of their own cells to generate energy.
b. Those lysosomes which eat old and worn out cellular organelles.
c. Lysosomes which help in extracellular digestion
d. Both a and b
Answer  Explanation 

ANSWER: Both a and b

Explanation:
No explanation is available for this question!


34)   Cellular organelles related with H2O2 are

a. Glyoxisomes
b. Lysosomes
c. Peroxisomes
d. Ribosomes
Answer  Explanation 

ANSWER: Peroxisomes

Explanation:
No explanation is available for this question!


35)   Which of the following statement is incorrect about Glyoxisomes?

a. They contain enzymes which help in conversion of fatty acids into carbohydrate
b. They are abundant in soyabeans but absent in pea.
c. They are present through out life of a plant and provide them whth energy through Glyoxylate cycle.
d. They are signle membranous organelles
Answer  Explanation 

ANSWER: They are present through out life of a plant and provide them whth energy through Glyoxylate cycle.

Explanation:
No explanation is available for this question!


36)   Which of the following cytoskeletal fiber contain tubulin protein?

a. One which help in assembly of spindles during mitosis.
b. One involved in internal cell motion.
c. One involved in maintenance of cell shape.
d. Both b and c
Answer  Explanation 

ANSWER: One which help in assembly of spindles during mitosis.

Explanation:
No explanation is available for this question!


37)   Centrioles are composed of ________ triplets of microtubules.

a. 3
b. 9
c. 10
d. 15
Answer  Explanation 

ANSWER: 9

Explanation:
No explanation is available for this question!


38)   The human naked eye can differentiate between two points which are _______ apart.

a. 1.0 mm
b. 0.1 mm
c. 1.0 cm
d. 1.0 dm
Answer  Explanation 

ANSWER: 1.0 mm

Explanation:
No explanation is available for this question!


39)   Ribonucleo-protein particles are the name of

a. DNA
b. Nucleus
c. Eukaryotic ribosomes
d. RNA
Answer  Explanation 

ANSWER: Eukaryotic ribosomes

Explanation:
No explanation is available for this question!


40)   Ribosomes + m-RNA

a. Polysome
b. Phlosome
c. Polosome
d. None of these
Answer  Explanation 

ANSWER: Polysome

Explanation:
No explanation is available for this question!


41)   In golgi apparatus the maturing face is

a. Biconcave
b. Convex
c. Spherical
d. Concave
Answer  Explanation 

ANSWER: Concave

Explanation:
No explanation is available for this question!


42)   Proteins and lipids are converted into glycolipids and glycoproteins by adding carbohydrates by

a. Ribosomes
b. Cytoplasm
c. Golgi apparatus
d. Endoplasmic reticulum
Answer  Explanation 

ANSWER: Golgi apparatus

Explanation:
No explanation is available for this question!


43)   Amoeboid movements and movement of cyclosis is due to

a. Microfilaments
b. Microtubules
c. Intermediate filaments
d. Cytoskeleton
Answer  Explanation 

ANSWER: Microfilaments

Explanation:
No explanation is available for this question!


44)   Of the following which one is not the characteristic of mitochondria?

a. It contains F1 particles
b. It is involved in the synthesis of protein
c. It is a self replicating organelle
d. Number of mitochondria is constant
Answer  Explanation 

ANSWER: Number of mitochondria is constant

Explanation:
No explanation is available for this question!


45)   Chlorophyll is a/an _____ molecule

a. Inorganic
b. Cationic
c. Anionic
d. Organic
Answer  Explanation 

ANSWER: Organic

Explanation:
No explanation is available for this question!


46)   The part of chloroplast where CO2 is fixed to manufacture sugar is

a. Stroma
b. Grana
c. Thylakoid
d. Outer membrane
Answer  Explanation 

ANSWER: Stroma

Explanation:
No explanation is available for this question!


47)   The type of plastids which help in pollination is

a. Chromoplasts
b. Leucoplasts
c. Chloroplasts
d. All of these
Answer  Explanation 

ANSWER: Chromoplasts

Explanation:
No explanation is available for this question!


48)   Ribosomes are assembled in

a. Nucleolus
b. Nucleus
c. DNA
d. RNA
Answer  Explanation 

ANSWER: Nucleolus

Explanation:
No explanation is available for this question!


49)   The place of centromere where spindle fibres get attached is

a. Kinetochore
b. Kinochore
c. Centromere region
d. all of these
Answer  Explanation 

ANSWER: Kinetochore

Explanation:
No explanation is available for this question!


50)   Which of the following is not present in mitochondria?

a. Enzymes
b. Co-enzymes
c. Ribosomes
d. Thylakoids
Answer  Explanation 

ANSWER: Thylakoids

Explanation:
No explanation is available for this question!