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DSSSB Nursing Officer Old Objective Paper for Students
Which organelle is known as the powerhouse of the cell?
a) Golgi bodies
b) Mitochondria
c) Ribosomes
d) Nucleus
Option b – Mitochondria
What is the average length of the adult human trachea?
a) 6 to 8 cm
b) 10 to 11 cm
c) 14 to 15 cm
d) 16 to 20 cm
Option b – 10 to 11 cm
Where does the coronary sinus drain?
a) Inferior vena cava
b) Right atrium
c) Left atrium
d) Great cardiac veins
Option b – Right atrium
What is the longest vein found in the human body?
a) IVC
b) Cephalic
c) Basilic
d) Long saphenous
Option d – Long saphenous
Which cells are responsible for color vision?
a) Rod
b) Cones
c) Occipital cortex
d) Bipolar cells
Option b – Cones
What type of receptors detect pain?
a) Ruffini organs
b) Meckel’s bodies
c) Golgi bodies
d) Free nerve endings
Option d – Free nerve endings
What is the term for the volume of blood pumped by the ventricles each minute?
a) Stroke volume
b) Cardiac output
c) Cardiac cycle
d) Heart rate
Option b – Cardiac output
Where is parathyroid hormone (PTH) produced?
a) Thyroid gland
b) Parathyroid gland
c) Anterior lobe
d) Testes
Option b – Parathyroid gland
Which hormone is responsible for increasing blood glucose levels?
a) Glucose
b) Oestrogen
c) Insulin
d) Testosterone
Option a – Glucose
What type of blood is carried by the pulmonary artery?
a) Pure blood
b) Impure blood
c) Oxygenated blood
d) Both A & C
Option b – Impure blood
In infants, the spinal cord typically extends to which vertebral level?
a) Lower border of L1 vertebra
b) Lower border of S1
c) Upper border of S1
d) Lower border of L3
Option d – Lower border of L3
The lower edge of the scapula aligns with which vertebra?
a) T4
b) T3
c) T9
d) T7
Option d – T7
In which organ is myocardium exclusively found?
a) Brain
b) Heart
c) Stomach
d) Lungs
Option b – Heart
What is the average life expectancy in India?
a) 46 years
b) 56 years
c) 66 years
d) 76 years
Option c – 66 years
Sera are used to provide which type of immunity?
a) Artificial passive immunity
b) Natural passive immunity
c) Natural passive immunity
d) None of the above
Option a – Artificial passive immunity
Which of the following is not consistent with the cell theory?
a) Angiosperms
b) WBCs
c) Viruses
d) Gymnosperms
Option c – Viruses
a) Type of protein present in the body
b) Similar triplet code for amino acids
c) Energy is stored in high phosphate bonds
d) Ribosomes are the site of protein synthesis
Option a – Type of protein present in the body
Who is credited with the discovery of the cell?
a) Robert Brown
b) Robert Hooke
c) Leeuwenhoek
d) Rudolf Virchow
Option b – Robert Hooke
What is the primary structural component of living cells?
a) Oxygen
b) Hydrogen
c) Carbon
d) Nitrogen
Option c – Carbon
Which substance constitutes over 80% of the cell’s composition?
a) Protein
b) Fat
c) Mineral
d) Water
Option d – Water
What is the scientific discipline focused on the study of cells?
a) Taxonomy
b) Physiology
c) Histology
d) Cytology
Option d – Cytology
Who is considered the father of cytology?
a) Robert Hooke
b) Nageli
c) Matthias Schleiden
d) Virchow
Option a – Robert Hooke
Who stated that every cell originates from a pre-existing cell?
a) Virchow
b) Leeuwenhoek
c) Robert Hooke
d) Schwann
Option a – Virchow
What is the primary role of the cell wall?
a) Provides structural support
b) Protects against pathogens
c) Maintains plant cell shape
d) All of the above
Option d – All of the above
Which is the innermost layer of a fully developed plant cell wall?
a) Primary cell wall
b) Plasma membrane
c) Secondary cell wall
d) Plasmodesmata
Option c – Secondary cell wall
Which of these features distinguishes a plant cell from an animal cell?
a) Chloroplast
b) Cell wall
c) Cell membrane
d) Nucleus
Option b – Cell wall
Which part of the cell wall is still alive?
a) Middle lamella
b) Pit pair
c) Secondary cell wall
d) Plasmodesmata
Option d – Plasmodesmata
What accurately describes the functions of the plant cell wall?
a) Offers protection
b) Facilitates interaction between cells
c) Acts as a barrier to large unwanted molecules
d) All of the above
Option d – All of the above
Which organelle lacks nucleic acids?
a) Nucleolus
b) Chloroplast
c) Ribosome
d) Plasma membrane
Option d – Plasma membrane
Which of the following are roles of the plasma membrane?
b) Cell recognition
c) Secretion of substances
d) All of the above
Option d – All of the above
The ‘Fluid Mosaic Model’ by Singer and Nicholson refers to:
a) Ribosomes
b) Cytoplasm
c) Cell wall
d) Plasma membrane
Option d – Plasma membrane
The lipid portion of the cell membrane is made up of:
a) Lipolipids
b) Phosphoglycerides
c) Hydrophobic lipids
d) None of the above
Option b – Phosphoglycerides
How are lipids organized in the cell membrane?
a) Polar heads inward, tails outward
b) Heads and tails both facing outward
c) Heads outward, tails inward
d) Heads and tails both facing inward
Option c – Heads outward, tails inward
What is the name given to the living material inside a cell?
a) Cytoplasm
b) Cytoplasm and nucleoplasm
c) Nucleoplasm
d) Cytoplasm, nucleoplasm, and organelles
Option d – Cytoplasm, nucleoplasm, and organelles
In what form is fat stored within protoplasm?
a) Polypeptides
b) Triglycerides
c) Polysaccharides
d) Nucleosides
Option b – Triglycerides
What is absent in a protoplast?
a) Cytoplasm
b) Nucleus
c) Mitochondria
d) Cell wall
Option d – Cell wall
The fluid mosaic model explains:
a) Only membrane structure
b) Only membrane function
c) Both structure and function of membranes
d) Only membrane fluidity
Option c – Both structure and function of membranes
What does it mean when the cell membrane is described as selectively permeable?
a) All substances pass through freely
b) Only water is allowed through
c) Selective substances are permitted
d) Only ions are allowed to pass
Option c – Selective substances are permitted
What best describes integral proteins in a cell membrane?
a) Partially or completely embedded in the membrane
b) Slightly attached to the membrane surface
c) Permanently fixed on the outer surface
d) Loosely attached to the outer side
Option a – Partially or completely embedded in the membrane
What does the membrane’s fluid nature help explain?
a) Growth and cell division
b) Formation of junctions between cells
c) Substance movement and secretion
d) All of the above
Option d – All of the above
Which statement about the nucleus is accurate?
a) First identified by Robert Brown
b) Flamming referred to it as chromatin
c) Contains the nucleolus in the nucleoplasm
d) All of the above
Option d – All of the above
Which description about histone proteins is accurate?
a) Found in mitochondria
b) Found in the nucleus bound to DNA
c) Linked with cytoplasmic lipids
d) Bound to carbohydrates in the cytoplasm
Option b – Found in the nucleus bound to DNA
DNA in a cell is primarily located in the:
a) Golgi body
b) Cytoplasm
c) Plasma membrane
d) Nucleus
Option d – Nucleus
Who is credited with discovering the nucleolus?
a) Fontana
b) Schleiden
c) Altmann
d) Robert Brown
Option a – Fontana
What is the origin of the nucleolus in chromosomes?
a) Nucleolar reorganizing region
b) Nucleus forming region
c) Nucleolar organizer region
d) None of the above
Option c – Nucleolar organizer region
Under an electron microscope, what structure in chromosomes resembles “beads-on-a-string”?
a) Nucleotides
b) Nucleosomes
c) Base pairs
d) Genes
Option b – Nucleosomes
What dye stains nuclear material?
a) Acidic dye
b) Basic dye
c) Neutral dye
d) Iodine
Option b – Basic dye
Choose the correct statement about the nucleolus.
a) Site of mRNA synthesis
b) Cells active in protein synthesis have large, numerous nucleoli
c) Contains nucleoplasm
d) Enclosed by a membrane
Option b – Cells active in protein synthesis have large, numerous nucleoli
Where are the enzymes responsible for the Krebs cycle located in mitochondria?
a) Matrix
b) Cristae
c) Inner membrane
d) Outer membrane
Option a – Matrix
Which cell structure is often referred to as the cell’s “powerhouse”?
a) Mitochondria
b) Arteries
c) Pituitary glands
d) Lungs
Option a – Mitochondria
Mitochondria are capable of generating their own:
a) Nucleus
b) Proteins
c) Chloroplasts
d) Digestive enzymes
Option b – Proteins
Besides the nucleus, which organelle also contains DNA?
a) Centriole
b) Golgi apparatus
c) Lysosomes
d) Mitochondria
Option d – Mitochondria
Which of the following creatures possesses white-colored blood?
a) Lizard
b) Cockroach
c) House bug
d) Mosquito
Option b – Cockroach
Where is the hearing organ of a grasshopper located?
a) Antenna
b) Legs
c) Stomach
d) Wings
Option c – Stomach
Which animal has the highest brain-to-body size ratio?
a) Ant
b) Elephant
c) Dolphin
d) Human being
Option a – Ant
Animals with segmented, jointed limbs are grouped under which phylum? ( DSSSB Nursing Officer Old Paper QnA )
a) Arthropoda
b) Annelida
c) Nemathelminthes
d) Platyhelminthes
Option a – Arthropoda
Honey bees and wasps belong to which class of organisms?
a) Insecta
b) Crustacea
c) Diplopoda
d) Arachnida
Option a – Insecta
How do most insects perform respiration?
a) Through skin
b) Using gills
c) Via lungs
d) Through spiracles
Option d – Through spiracles
Crabs are categorized under which phylum?
a) Mollusca
b) Cnidaria
c) Arthropoda
d) Platyhelminthes
Option c – Arthropoda
Which one is not considered an insect? ( DSSSB Nursing Officer Old Paper QnA )
a) Bed bug
b) Spider
c) Housefly
d) Mosquito
Option b – Spider
What is the larval form of a housefly called?
a) Pupa
b) Imago
c) Maggot
d) None of these
Option c – Maggot
What is the third stage in butterfly metamorphosis?
a) Egg
b) Pupa
c) Adult
d) Larva
Option b – Pupa
In which organism does the female kill the male after mating? ( DSSSB Nursing Officer Old Paper QnA )
a) Dragonfly
b) Honey bee
c) Spider
d) Pit Viper
Option c – Spider
Which group consists entirely of arthropods?
a) Prawn, Schistosoma, Planaria
b) Cockroach, Scorpion, Prawn
c) Chiton, Neopilina, Scorpion
d) Chiton, Prawn, Cockroach
Option b – Cockroach, Scorpion, Prawn
Which of the following is not a respiratory organ in Arthropoda?
a) Tracheal system
b) Gills
c) Water vascular system
d) Book lungs
Option c – Water vascular system
Which animal is often labeled a “living fossil”?
a) King locust
b) Limulus
c) Bombyx
d) Balanoglossus
Option b – Limulus
Which statement is incorrect regarding the Arthropoda phylum? ( DSSSB Nursing Officer Old Paper QnA )
a) They have an open circulatory system
b) They exhibit bilateral symmetry and are coelomates
c) They are diploblastic with a distinct head, thorax, and abdomen
d) They have antennae and Malpighian tubules
Option c – They are diploblastic with a distinct head, thorax, and abdomen
Which phylum exhibits bilateral symmetry, segmentation, a true coelom, and open circulation?
a) Annelida
b) Arthropoda
c) Mollusca
d) Echinodermata
Option b – Arthropoda
Which one of the following is not a vertebrate?
a) Mammal
b) Fish
c) Snail
d) Bird
Option c – Snail
To which phylum do snails belong? ( DSSSB Nursing Officer Old Paper QnA )
a) Echinodermata
b) Mollusca
c) Arthropoda
d) Chordata
Option b – Mollusca
Which phylum holds the second highest number of species in the animal kingdom?
a) Annelida
b) Arthropoda
c) Mollusca
d) Chordata
Option c – Mollusca
Which statement accurately describes Mollusca?
a) Presence of segmented body parts
b) Contains a coelom and mantle cavity
c) Displays tissue-level organization
d) Covered with a chitinous outer layer
Option b – Contains a coelom and mantle cavity
The body of mollusks is typically divided into:
a) Head, thorax, and abdomen
b) Head, muscular foot, and abdomen
c) Head, thorax, and visceral hump
d) Head, muscular foot, and visceral hump
Option d – Head, muscular foot, and visceral hump
What is the scientific name for the elephant tusk shell?
a) Dentalium
b) Chaetoderma
c) Chiton
d) Neoplina
Option a – Dentalium
What is a defining characteristic of echinoderms?
a) Radial symmetry
b) Water vascular system
c) Mantle cavity
d) All of the above
Option b – Water vascular system
Which of the following statements is inaccurate? ( DSSSB Nursing Officer Old Paper QnA )
a) All echinoderms give birth to live young
b) Roundworms lack a circulatory system
c) Bony fishes typically have a swim bladder
d) Internal fertilization occurs in cartilaginous fish
Option a – All echinoderms give birth to live young
Which set of animals belongs to Phylum Echinodermata?
a) Sea urchin, cuttlefish, sea lily
b) Echinus, sea hare, sea cucumber
c) Antedon, Ophiura, Echinus
d) Ophiura, Chaetopleura, Echinus
Option c – Antedon, Ophiura, Echinus
What type of excretory organs do echinoderms possess?
a) Nephridia
b) Green glands
c) Flame cells
d) None of these
Option d – None of these
Which phylum lacks species that live in freshwater environments? ( DSSSB Nursing Officer Old Paper QnA )
a) Echinodermata
b) Mollusca
c) Chordata
d) Porifera
Option a – Echinodermata
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