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BIO NMDCAT

1785 questions found

Subcategories

📁 ACELLULAR LIFR 20 📁 AIDS and HIV Infection 50 📁 and nerve impulse Reflexes and reflex arc 0 📁 Arthritis 0 📁 axon 0 📁 BIOENERGETICS 0 📁 Biological Importance of Water 95 📁 BIOLOGICAL MOLECULES 126 📁 Biotechnology 0 📁 Biotechnology and Health Care 0 📁 Blood Vessels 0 📁 Brain 25 📁 Carbohydrates 100 📁 Cardiac cycle and phases of Heartbeat 0 📁 cell body 0 📁 cell membrane 70 📁 CELL STRUCTURE & FUNCTION 100 📁 Chromosomes 76 📁 Circulation 0 📁 Concept of Evolution 50 📁 Conjugated molecules 100 📁 COORDINATION & CONTROL NERVOUS & CHEMICAL COORDINATION 0 📁 Cytoplasmic Organelles 75 📁 Darwinism 50 📁 dendrites 0 📁 DIVERSITY AMONG ANTMALS (THE KTNGDOM ANIMALIA) 0 📁 ENZYMES 108 📁 EVOLUTION 0 📁 Factors that Affect the Rate of Enzyme Reactions 60 📁 Form and Function in Plants 0 📁 Gene linkage and crossing over 0 📁 Homeostasis (kidney specifically) 0 📁 Homeostasis Mainly Kidney Portion nmdcat etea 0 📁 Human Heart 0 📁 Human Reproductive system 0 📁 Human Reproductive system-Menstrual cycle 0 📁 Human skeleton 0 📁 INHERITANCE 0 📁 Inhibitors 40 📁 Joints 0 📁 Lamarckism 50 📁 Lipids 45 📁 lmmunity 0 📁 Lymphatic system 0 📁 Mendel's laws of Inheritance 0 📁 Menstrual cycle 0 📁 Mode of Enzyme Action 60 📁 Muscle contraction 0 📁 Muscles 0 📁 myelin sheath 0 📁 Neurons 41 📁 PROKARYOTES (KTNGDOM MONERA) 0 📁 Prokaryotic and Eukaryotic cell 0 📁 Proteins 95 📁 Receptors 40 📁 REPRODUCTION 0 📁 Respiration 15 📁 Respiratory system 0 📁 Ribonucleic acid (RNA) 100 📁 Sexually transmitted diseases 50 📁 Skeletal muscles 0 📁 Specific Defense Mechanism 0 📁 Structure of DNA 98 📁 SUPPORT & MOVEMENT 0 📁 Viruses 46 📁 X-linked Recessive inheritance 0

Practice Questions

Among the following statements, an icosahedral virus possesses

A. Spiral arrangement only
B. Twenty triangular faces
C. Tail fibers only
D. Brick-shaped body

Icosahedral symmetry provides stability and efficient genome packaging.

nmdcat.online BIO NMDCAT
Jun 25, 2026

Regarding viral envelopes, susceptibility to detergents is generally

A. Increased
B. Eliminated
C. Unchanged
D. Impossible to determine

Lipid envelopes are disrupted by detergents, reducing infectivity.

nmdcat.online BIO NMDCAT
Jun 25, 2026

The disease polio is caused by a virus possessing

A. Single-stranded RNA
B. Double-stranded DNA
C. Double-stranded RNA
D. Circular DNA

Poliovirus belongs to the RNA viruses and contains positive-sense single-stranded RNA.

nmdcat.online BIO NMDCAT
Jun 25, 2026

Concerning viral replication, synthesis of new viral particles occurs within

A. Inert environment
B. Host cell
C. Soil medium
D. Water medium

Viruses depend entirely on host cellular machinery for replication.

nmdcat.online BIO NMDCAT
Jun 25, 2026

The characteristic shape of Tobacco Mosaic Virus is

A. Spherical
B. Helical rod-shaped
C. Brick-shaped
D. Polyhedral with tail

TMV exhibits a rigid rod-shaped helical symmetry.

nmdcat.online BIO NMDCAT
Jun 25, 2026

Among human viral diseases, influenza is caused by a virus possessing

A. RNA genome
B. Protein genome
C. DNA and RNA together
D. Ribosomal genome

Influenza virus contains a segmented RNA genome.

nmdcat.online BIO NMDCAT
Jun 25, 2026

Regarding viruses, the structural component present in all viruses is

A. Ribosome
B. Capsid
C. Cell membrane
D. Cytoplasm

Capsid is the protein coat that surrounds viral nucleic acid and is present in all viruses. Ribosomes, cytoplasm, and true cellular membranes are absent in all viruses.

nmdcat.online BIO NMDCAT
Jun 25, 2026

Among the following statements, viruses are best described as

A. Prokaryotic organisms
B. Acellular infectious particles
C. Eukaryotic microorganisms
D. Primitive bacteria

Viruses lack cellular organization and consist mainly of nucleic acid enclosed by a protein coat, making them acellular infectious particles.

nmdcat.online BIO NMDCAT
Jun 25, 2026

The characteristic feature shared by all viruses is

A. Independent metabolism
B. Presence of DNA only
C. Obligate intracellular parasitism
D. Cellular organization

Viruses can reproduce only inside living host cells because they lack independent metabolic machinery.

nmdcat.online BIO NMDCAT
Jun 25, 2026

Regarding viral nucleic acids, a virus contains

A. DNA and RNA simultaneously
B. Either DNA or RNA
C. DNA and proteins only
D. RNA and ribosomes

A virus contains either DNA or RNA as genetic material but never both simultaneously.

nmdcat.online BIO NMDCAT
Jun 25, 2026

The protein coat surrounding viral nucleic acid is termed

A. Envelope
B. Matrix
C. Capsid
D. Peptidoglycan wall

Capsid protects the viral genome and helps in host recognition. Envelope is an additional structure found only in some viruses.

nmdcat.online BIO NMDCAT
Jun 25, 2026

Among the following viral groups, bacteriophages primarily infect

A. Plants
B. Fungi
C. Bacteria
D. Protozoa

Bacteriophages are viruses specialized to infect bacterial cells.

nmdcat.online BIO NMDCAT
Jun 25, 2026

Regarding Tobacco Mosaic Virus, the genetic material consists of

A. Double-stranded DNA
B. Single-stranded RNA
C. Double-stranded RNA
D. Single-stranded DNA

TMV is a classic plant virus containing single-stranded RNA enclosed in a helical capsid.

nmdcat.online BIO NMDCAT
Jun 25, 2026

The disease associated with Human Immunodeficiency Virus is

A. Hepatitis
B. Influenza
C. AIDS
D. Rabies

HIV attacks helper T lymphocytes and causes Acquired Immunodeficiency Syndrome (AIDS).

nmdcat.online BIO NMDCAT
Jun 25, 2026

The viral disease characterized by hydrophobia is caused by

A. HIV
B. Rabies virus
C. Influenza virus
D. Poliovirus

Rabies virus affects the nervous system and commonly causes hydrophobia in infected individuals.

nmdcat.online BIO NMDCAT
Jun 25, 2026

The host range of a virus depends primarily upon

A. Cytoplasmic volume
B. Compatibility of receptors
C. Number of chromosomes
D. Presence of cell wall

Viruses infect cells possessing specific receptors complementary to viral attachment proteins.

nmdcat.online BIO NMDCAT
Jun 25, 2026

Regarding enveloped viruses, the outer covering is mainly derived from

A. Host cell membrane
B. Viral genome
C. Host ribosomes
D. Capsomeres only

Viral envelopes are obtained from host cell membranes during viral budding.

nmdcat.online BIO NMDCAT
Jun 25, 2026

Viral genome inserted into bacterial DNA is termed as:

A. Lysogeny
B. Prophage
C. Lytic cycle
D. Binary fission
nmdcat.online ACELLULAR LIFR
Jun 24, 2026

Which of the following is a double-stranded DNA virus?

A. Influenza
B. HIV
C. Herpesvirus
D. Hepatitis A
nmdcat.online ACELLULAR LIFR
Jun 24, 2026
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