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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, HIV primarily attacks

A. B lymphocytes
B. CD4+ T helper cells
C. Red blood cells
D. Platelets

HIV specifically infects and destroys helper T cells.

nmdcat.online AIDS and HIV Infection
Jun 25, 2026

The characteristic feature of AIDS involves

A. Increased immunity
B. Progressive immune deficiency
C. Excess insulin secretion
D. Increased hemoglobin

Loss of CD4 cells weakens immunity.

nmdcat.online AIDS and HIV Infection
Jun 25, 2026

Regarding HIV transmission, a major route is

A. Hand shaking
B. Contaminated blood transfusion
C. Sharing books
D. Air currents

HIV can spread through infected blood.

nmdcat.online AIDS and HIV Infection
Jun 25, 2026

Among the following body fluids, HIV transmission commonly occurs through

A. Sweat
B. Tears
C. Blood
D. Saliva

Blood contains sufficient viral particles for transmission.

nmdcat.online AIDS and HIV Infection
Jun 25, 2026

Concerning HIV infection, unprotected sexual contact increases the risk of

A. Tuberculosis only
B. HIV transmission
C. Diabetes
D. Malaria

Sexual contact is a major transmission route.

nmdcat.online AIDS and HIV Infection
Jun 25, 2026

Regarding AIDS symptoms, persistent fever is considered

A. Common symptom
B. Rare symptom
C. Genetic symptom
D. Unrelated symptom

Long-lasting fever frequently occurs in AIDS patients.

nmdcat.online AIDS and HIV Infection
Jun 25, 2026

The characteristic feature of HIV structure includes

A. DNA genome only
B. RNA genome and reverse transcriptase
C. Ribosomes
D. Cell wall

HIV is a retrovirus containing RNA and reverse transcriptase.

nmdcat.online AIDS and HIV Infection
Jun 25, 2026

Among the following statements, HIV belongs to

A. Retroviruses
B. Adenoviruses
C. Poxviruses
D. Bacteriophages

HIV is classified as a retrovirus.

nmdcat.online AIDS and HIV Infection
Jun 25, 2026

During HIV infection, reverse transcriptase converts

A. DNA into protein
B. RNA into DNA
C. Protein into RNA
D. DNA into lipid

Reverse transcriptase synthesizes DNA from viral RNA.

nmdcat.online AIDS and HIV Infection
Jun 25, 2026

Regarding viruses infecting plants, mechanical injury frequently facilitates

A. Viral entry
B. Viral digestion
C. Viral mutation
D. Viral elimination

Plant cell walls hinder entry, making wounds important portals.

nmdcat.online BIO NMDCAT
Jun 25, 2026

Among the following statements, bacteriophages contribute significantly to

A. Bacterial gene transfer
B. Photosynthesis
C. Nitrogen fixation
D. Cell respiration

Phages mediate transduction, transferring genes between bacteria.

nmdcat.online BIO NMDCAT
Jun 25, 2026

The characteristic feature of TMV capsid organization is

A. Helical arrangement
B. Cubical arrangement
C. Complex arrangement
D. Tail arrangement

TMV capsid proteins are arranged helically around RNA.

nmdcat.online BIO NMDCAT
Jun 25, 2026

Concerning lysogenic bacteriophages, viral DNA becomes integrated into

A. Ribosomes
B. Bacterial chromosome
C. Cell wall
D. Cytoplasm only

Integrated viral DNA is called a prophage.

nmdcat.online BIO NMDCAT
Jun 25, 2026

The characteristic feature distinguishing viruses from cells is

A. Genetic material
B. Evolutionary ability
C. Lack of cellular organization
D. Presence of proteins

Viruses are acellular, whereas living cells possess cellular structure.

nmdcat.online BIO NMDCAT
Jun 25, 2026

Among human viral pathogens, HIV primarily targets

A. Erythrocytes
B. Helper T cells
C. Platelets
D. Hepatocytes

HIV infects CD4+ T helper lymphocytes leading to immune deficiency.

nmdcat.online BIO NMDCAT
Jun 25, 2026

Regarding host specificity, successful infection depends largely upon

A. Receptor compatibility
B. Genome size
C. Capsid color
D. Host age only

Viral attachment proteins must recognize host cell receptors.

nmdcat.online BIO NMDCAT
Jun 25, 2026

During viral multiplication, assembly refers to

A. Host attachment
B. Formation of complete virions
C. Viral penetration
D. Genome transcription only

Viral components are assembled into mature infectious particles.

nmdcat.online BIO NMDCAT
Jun 25, 2026

The characteristic feature of naked viruses is

A. Presence of lipid envelope
B. Absence of lipid envelope
C. Absence of capsid
D. Presence of cell wall

Naked viruses contain only nucleic acid and capsid without an envelope.

nmdcat.online BIO NMDCAT
Jun 25, 2026

Regarding influenza virus, antigenic variation primarily results from

A. Mutation in RNA genome
B. Presence of peptidoglycan
C. Ribosomal alterations
D. Cell division

Frequent mutations enable influenza viruses to evade immune responses.

nmdcat.online BIO NMDCAT
Jun 25, 2026
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