SNC4M EXAM REVIEW | QUESTIONS AND ANSWERS |
2026 UPDATE | RATED 100% CORRECT!!
Pandemic Answer - Disease that occurs over a wide geographic area and
affects a very high proportion of the population.
Quarantine Answer - isolation to prevent the spread of disease
R0 Answer - the number of secondary infections that result from a single
infected individual entering a population of entirely susceptible individuals
Carbohydrate Answer - compound made up of carbon, hydrogen, and oxygen
atoms; major source of energy for the human body
A nucleotide consists of what theee components? Answer - Nitrogenous base,
Pentose sugar, Phosphate group
What is a vector? Answer - Vectors are species that act as a carrier of disease
Define lysogony Answer - Dormant state, viral DNA remains in host
chromosomes for many cell cycle generations"
Define lysis Answer - Rupturing of cell. Newly made viruses release from host
cell"
,What are prions? Answer - They are incorrectly folded proteins
What are the Bio safety levels Answer - "BSL - 1
Low Risk Microbes
Commonly causes disease to healthy host
Minimal hazard to workers and environment
BSL - 2
Typically indigenous - varying severity
Moderate risk to workers and environment
BSL - 3
Indigenous or exotic
Potentially lethal diseases through respiratory transmission
BSL-4
High Risk Microbes
Dangerous and exotic
Frequently fatal without treatment or vaccines
"
What is Antibiotic Resistance Answer - Bacterial resistance is the reduced
ability of an antibiotic to stop the bacteria causing disease in the host human
Define nosocomial infections. Answer - Infections a patient acquires during
their stay in a healthcare environment.
, What is the difference between systolic blood pressure and drasolic blood
pressure? Answer - Systolic blood pressure is when ventricles contract and
drastolic blood pressure is when the ventricles relax
What are some examples of first line defence mechanisms? Answer - skin,
tears, mucus, cilia, stomach acid, urine flow, 'friendly' bacteria and white blood
cells called neutrophils
What do cytotoxic T cells do? Answer - They directly attack and kill cells that
have specific antigens. They also kill cancer cells.
What is a macronutrient ? Answer - A nutrient needed in large quantities in
the diet
What is a micronutrient ? Answer - A nutrient needed in small quantities in the
diet
What is one of the principles of Homeopathy? Answer - "One of the principles
of homeopathy is the dilution of the therapeutic drug"
What is the bodies average internal temperature? Answer - 37.0 degree celcius
(98.6 degree Fahrenheit)
What are the two types adaptive immunity? Answer - Naturally acquired and
artificially acquired.
What are some treatment options for HIV? Answer - "Non-nucleoside reverse
transcriptase inhibitors (NNTRTIs) - disable protein needed by HIV to make
copies of itself
2026 UPDATE | RATED 100% CORRECT!!
Pandemic Answer - Disease that occurs over a wide geographic area and
affects a very high proportion of the population.
Quarantine Answer - isolation to prevent the spread of disease
R0 Answer - the number of secondary infections that result from a single
infected individual entering a population of entirely susceptible individuals
Carbohydrate Answer - compound made up of carbon, hydrogen, and oxygen
atoms; major source of energy for the human body
A nucleotide consists of what theee components? Answer - Nitrogenous base,
Pentose sugar, Phosphate group
What is a vector? Answer - Vectors are species that act as a carrier of disease
Define lysogony Answer - Dormant state, viral DNA remains in host
chromosomes for many cell cycle generations"
Define lysis Answer - Rupturing of cell. Newly made viruses release from host
cell"
,What are prions? Answer - They are incorrectly folded proteins
What are the Bio safety levels Answer - "BSL - 1
Low Risk Microbes
Commonly causes disease to healthy host
Minimal hazard to workers and environment
BSL - 2
Typically indigenous - varying severity
Moderate risk to workers and environment
BSL - 3
Indigenous or exotic
Potentially lethal diseases through respiratory transmission
BSL-4
High Risk Microbes
Dangerous and exotic
Frequently fatal without treatment or vaccines
"
What is Antibiotic Resistance Answer - Bacterial resistance is the reduced
ability of an antibiotic to stop the bacteria causing disease in the host human
Define nosocomial infections. Answer - Infections a patient acquires during
their stay in a healthcare environment.
, What is the difference between systolic blood pressure and drasolic blood
pressure? Answer - Systolic blood pressure is when ventricles contract and
drastolic blood pressure is when the ventricles relax
What are some examples of first line defence mechanisms? Answer - skin,
tears, mucus, cilia, stomach acid, urine flow, 'friendly' bacteria and white blood
cells called neutrophils
What do cytotoxic T cells do? Answer - They directly attack and kill cells that
have specific antigens. They also kill cancer cells.
What is a macronutrient ? Answer - A nutrient needed in large quantities in
the diet
What is a micronutrient ? Answer - A nutrient needed in small quantities in the
diet
What is one of the principles of Homeopathy? Answer - "One of the principles
of homeopathy is the dilution of the therapeutic drug"
What is the bodies average internal temperature? Answer - 37.0 degree celcius
(98.6 degree Fahrenheit)
What are the two types adaptive immunity? Answer - Naturally acquired and
artificially acquired.
What are some treatment options for HIV? Answer - "Non-nucleoside reverse
transcriptase inhibitors (NNTRTIs) - disable protein needed by HIV to make
copies of itself
