ESTUDYR
CIBTAC AND CIDESCO UPDATED EXAM WITH MOST TESTED
QUESTIONS AND ANSWERS | GRADED A+ | ASSURED SUCCESS
WITH DETAILED RATIONALES
1. What best describes a “local infection”?
A. Infection that spreads through the bloodstream
B. Infection confined to one area (e.g., a boil or pimple)
C. Transfer of infection between people
D. Infection prevented by immunity
Answer: B
Rationale: Local infections remain at the entry site without systemic spread.
2. Which term refers to an infection that has disseminated throughout the body?
A. Cross infection
B. General infection (e.g., blood poisoning)
C. Latent infection
D. Endogenous infection
Answer: B
Rationale: General (systemic) infections involve multiple organs or the bloodstream.
3. “Cross infection” is defined as:
A. Body’s own bacteria reactivating
B. Bacteria forming hard spores
C. Transfer of infection from one individual to another via direct or indirect contact
D. Immune response to toxins
Answer: C
Rationale: Cross infection occurs when pathogens pass between hosts.
4. Which describes “natural immunity”?
A. Immunity from vaccination
B. Passive transfer of antibodies
C. Immunity developed after surviving an infection
D. Immunity via antibiotic use
,ESTUDYR
Answer: C
Rationale: Natural immunity arises when the body encounters and overcomes pathogens.
5. Which best defines “artificial immunity”?
A. Antibodies passed from mother to fetus
B. Immunization via vaccine to stimulate antibody production
C. Temporary immunity from immunoglobulin injection
D. Immunity from surviving illness
Answer: B
Rationale: Vaccines deliberately expose antigens to build protection.
6. What is the main purpose of “sterilization”?
A. Reduce microbial count to safe levels
B. Kill or remove all microorganisms, including spores
C. Disinfect surfaces only
D. Enhance growth of beneficial flora
Answer: B
Rationale: Sterilization eliminates every form of microbial life.
7. Which chemical is not typically used as an antiseptic on skin?
A. Iodine
B. Alcohol
C. QUATS (quaternary ammonium compounds)
D. Hydrogen peroxide
Answer: C
Rationale: QUATS are strong disinfectants but generally too harsh for direct skin use.
8. What is the shape of “bacilli” bacteria?
A. Round
B. Spiral
C. Rod-shaped
D. Star-shaped
Answer: C
Rationale: Bacilli are elongated, cylindrical cells.
,ESTUDYR
9. “Anaerobic bacteria” require which condition to grow?
A. High salt
B. Absence of oxygen
C. Low pH
D. High temperature
Answer: B
Rationale: Anaerobes thrive in oxygen-free environments.
10. Which stage of the cell cycle is characterized by DNA duplication?
A. Metaphase
B. Anaphase
C. Interphase (S phase)
D. Telophase
Answer: C
Rationale: During interphase, the cell replicates its genetic material.
11. What process describes the movement of water from low solute concentration to high across
a semipermeable membrane?
A. Filtration
B. Active transport
C. Osmosis
D. Phagocytosis
Answer: C
Rationale: Osmosis is the diffusion of water toward higher solute.
12. Which is an example of passive transport?
A. Pinocytosis
B. Diffusion
C. Carrier-mediated uptake
D. Exocytosis
Answer: B
Rationale: Diffusion requires no energy input and moves substances down their gradient.
, ESTUDYR
13. Which skin layer is composed of dead, flattened cells and continuously sheds?
A. Stratum granulosum
B. Stratum spinosum
C. Stratum corneum
D. Stratum germinativum
Answer: C
Rationale: The stratum corneum is the outermost, keratinized layer.
14. What structure produces new nail cells by mitosis?
A. Nail bed
B. Lunula
C. Nail matrix
D. Cuticle
Answer: C
Rationale: The matrix is the living zone where nail growth originates.
15. “Onycholysis” refers to:
A. Torn skin at nail sides
B. Separation of nail plate from nail bed
C. Thickening of the nail
D. Fungal infection under the nail
Answer: B
Rationale: Onycholysis is the painless detachment of the nail.
16. Which describes an “endogenous infection”?
A. Caused by environmental organisms
B. Transmitted via fomites
C. Reactivation of dormant microbes within the body (e.g., TB)
D. Spread by direct contact
Answer: C
Rationale: Endogenous infections emerge from microbes already present.
17. What is “phagocytosis”?
A. Fluid uptake by cells
CIBTAC AND CIDESCO UPDATED EXAM WITH MOST TESTED
QUESTIONS AND ANSWERS | GRADED A+ | ASSURED SUCCESS
WITH DETAILED RATIONALES
1. What best describes a “local infection”?
A. Infection that spreads through the bloodstream
B. Infection confined to one area (e.g., a boil or pimple)
C. Transfer of infection between people
D. Infection prevented by immunity
Answer: B
Rationale: Local infections remain at the entry site without systemic spread.
2. Which term refers to an infection that has disseminated throughout the body?
A. Cross infection
B. General infection (e.g., blood poisoning)
C. Latent infection
D. Endogenous infection
Answer: B
Rationale: General (systemic) infections involve multiple organs or the bloodstream.
3. “Cross infection” is defined as:
A. Body’s own bacteria reactivating
B. Bacteria forming hard spores
C. Transfer of infection from one individual to another via direct or indirect contact
D. Immune response to toxins
Answer: C
Rationale: Cross infection occurs when pathogens pass between hosts.
4. Which describes “natural immunity”?
A. Immunity from vaccination
B. Passive transfer of antibodies
C. Immunity developed after surviving an infection
D. Immunity via antibiotic use
,ESTUDYR
Answer: C
Rationale: Natural immunity arises when the body encounters and overcomes pathogens.
5. Which best defines “artificial immunity”?
A. Antibodies passed from mother to fetus
B. Immunization via vaccine to stimulate antibody production
C. Temporary immunity from immunoglobulin injection
D. Immunity from surviving illness
Answer: B
Rationale: Vaccines deliberately expose antigens to build protection.
6. What is the main purpose of “sterilization”?
A. Reduce microbial count to safe levels
B. Kill or remove all microorganisms, including spores
C. Disinfect surfaces only
D. Enhance growth of beneficial flora
Answer: B
Rationale: Sterilization eliminates every form of microbial life.
7. Which chemical is not typically used as an antiseptic on skin?
A. Iodine
B. Alcohol
C. QUATS (quaternary ammonium compounds)
D. Hydrogen peroxide
Answer: C
Rationale: QUATS are strong disinfectants but generally too harsh for direct skin use.
8. What is the shape of “bacilli” bacteria?
A. Round
B. Spiral
C. Rod-shaped
D. Star-shaped
Answer: C
Rationale: Bacilli are elongated, cylindrical cells.
,ESTUDYR
9. “Anaerobic bacteria” require which condition to grow?
A. High salt
B. Absence of oxygen
C. Low pH
D. High temperature
Answer: B
Rationale: Anaerobes thrive in oxygen-free environments.
10. Which stage of the cell cycle is characterized by DNA duplication?
A. Metaphase
B. Anaphase
C. Interphase (S phase)
D. Telophase
Answer: C
Rationale: During interphase, the cell replicates its genetic material.
11. What process describes the movement of water from low solute concentration to high across
a semipermeable membrane?
A. Filtration
B. Active transport
C. Osmosis
D. Phagocytosis
Answer: C
Rationale: Osmosis is the diffusion of water toward higher solute.
12. Which is an example of passive transport?
A. Pinocytosis
B. Diffusion
C. Carrier-mediated uptake
D. Exocytosis
Answer: B
Rationale: Diffusion requires no energy input and moves substances down their gradient.
, ESTUDYR
13. Which skin layer is composed of dead, flattened cells and continuously sheds?
A. Stratum granulosum
B. Stratum spinosum
C. Stratum corneum
D. Stratum germinativum
Answer: C
Rationale: The stratum corneum is the outermost, keratinized layer.
14. What structure produces new nail cells by mitosis?
A. Nail bed
B. Lunula
C. Nail matrix
D. Cuticle
Answer: C
Rationale: The matrix is the living zone where nail growth originates.
15. “Onycholysis” refers to:
A. Torn skin at nail sides
B. Separation of nail plate from nail bed
C. Thickening of the nail
D. Fungal infection under the nail
Answer: B
Rationale: Onycholysis is the painless detachment of the nail.
16. Which describes an “endogenous infection”?
A. Caused by environmental organisms
B. Transmitted via fomites
C. Reactivation of dormant microbes within the body (e.g., TB)
D. Spread by direct contact
Answer: C
Rationale: Endogenous infections emerge from microbes already present.
17. What is “phagocytosis”?
A. Fluid uptake by cells
