Podcast
Questions and Answers
Which of the following is an example of a non-infectious disease?
Which of the following is an example of a non-infectious disease?
What type of microbe is depicted in the diagram?
What type of microbe is depicted in the diagram?
Which component of the immune system is primarily responsible for destroying pathogens?
Which component of the immune system is primarily responsible for destroying pathogens?
How does the immune system recognize a pathogen?
How does the immune system recognize a pathogen?
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What is the primary purpose of the immune system?
What is the primary purpose of the immune system?
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Which disease is transmitted through contaminated water?
Which disease is transmitted through contaminated water?
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Which type of microbe can only reproduce inside a living host cell?
Which type of microbe can only reproduce inside a living host cell?
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What is the term for the study of diseases and pathogens?
What is the term for the study of diseases and pathogens?
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What is the first symptom of chickenpox after exposure to the virus?
What is the first symptom of chickenpox after exposure to the virus?
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What does an incubation time of approximately 2 weeks for chickenpox indicate?
What does an incubation time of approximately 2 weeks for chickenpox indicate?
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Which of the following is the best strategy for preventing tetanus infections?
Which of the following is the best strategy for preventing tetanus infections?
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How fast does a person approach their image in a plane mirror if they are moving at 2 m/s?
How fast does a person approach their image in a plane mirror if they are moving at 2 m/s?
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What happens when a lens forms a blurred image of an object on a screen?
What happens when a lens forms a blurred image of an object on a screen?
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What can be inferred about the child who developed chickenpox spots at the party?
What can be inferred about the child who developed chickenpox spots at the party?
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Which of the following is NOT effective in preventing tetanus infections?
Which of the following is NOT effective in preventing tetanus infections?
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What misconception might people have about children who did not show chickenpox spots?
What misconception might people have about children who did not show chickenpox spots?
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What infection does Bordetella pertussis cause?
What infection does Bordetella pertussis cause?
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What is the primary way Bordetella pertussis spreads?
What is the primary way Bordetella pertussis spreads?
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What age is the vaccine for Bordetella pertussis given to infants?
What age is the vaccine for Bordetella pertussis given to infants?
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Which of the following describes a symptom of whooping cough?
Which of the following describes a symptom of whooping cough?
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How does the body typically respond to a Bordetella pertussis infection?
How does the body typically respond to a Bordetella pertussis infection?
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What role does antigen binding to immune cells play in the response to Bordetella pertussis?
What role does antigen binding to immune cells play in the response to Bordetella pertussis?
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In which part of the body does Bordetella pertussis primarily affect individuals?
In which part of the body does Bordetella pertussis primarily affect individuals?
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What is a potential consequence of whooping cough if left untreated?
What is a potential consequence of whooping cough if left untreated?
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How does one characterize the immune response seen in the diagram related to Bordetella pertussis?
How does one characterize the immune response seen in the diagram related to Bordetella pertussis?
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Which of the following would NOT improve a study linking contact sports and head injuries?
Which of the following would NOT improve a study linking contact sports and head injuries?
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What type of lens is typically used in position 1 when examining an object with a convex lens?
What type of lens is typically used in position 1 when examining an object with a convex lens?
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In ray diagrams, what is the primary function of a diverging lens?
In ray diagrams, what is the primary function of a diverging lens?
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When observing objects through a convex lens, what characteristic can be expected of the image formed?
When observing objects through a convex lens, what characteristic can be expected of the image formed?
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What is a common way to correct myopia using lenses?
What is a common way to correct myopia using lenses?
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Which part of the eye is responsible for sensing light and sending signals to the brain?
Which part of the eye is responsible for sensing light and sending signals to the brain?
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Why is the image formed by the eye different from that of a plane mirror?
Why is the image formed by the eye different from that of a plane mirror?
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Which type of lens would be most suitable to use in position 3 of the ray diagram?
Which type of lens would be most suitable to use in position 3 of the ray diagram?
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In a ray diagram, what happens when parallel rays of light pass through a convex lens?
In a ray diagram, what happens when parallel rays of light pass through a convex lens?
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What is the required color of the pen to be used for filling out responses?
What is the required color of the pen to be used for filling out responses?
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How should you indicate a correction if you believe you have answered incorrectly?
How should you indicate a correction if you believe you have answered incorrectly?
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What should you do if you change your mind about an answer you previously marked as incorrect?
What should you do if you change your mind about an answer you previously marked as incorrect?
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Which of the following describes how to fill in the response on the answer sheet?
Which of the following describes how to fill in the response on the answer sheet?
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What is the purpose of using a single type of pen while answering questions?
What is the purpose of using a single type of pen while answering questions?
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Study Notes
Multiple Choice
- Infectious diseases are caused by pathogens, while non-infectious diseases are not.
- AIDS, Cholera, and Influenza are examples of infectious diseases.
- Lung cancer is a non-infectious disease.
- The image above depicts a bacterium.
- The immune system destroys pathogens by engulfing them with macrophages.
- Chickenpox is caused by a virus with an incubation period of approximately two weeks.
- The best strategy for preventing tetanus infections is washing wounds with soap, as it is caused by a bacterium found in soil, dust, and manure.
- A person approaching a plane mirror at 2 m/s approaches their image in the mirror at 4 m/s.
- The speed of the person and their image is doubled.
- The image formed by a plane mirror is virtual, upright, and laterally inverted.
- A blurred image can be focused by moving the screen away from the lens and object OR by using a lens of shorter focal length.
Disease
- Clostridium tetani, the bacterium that causes tetanus, multiplies anaerobically in deep tissue wounds.
- Tetanolysin is the toxin produced by Clostridium tetani and causes tetanus.
- Antibiotics like Metronidazole or Penicillin are recommended for treating tetanus.
- The recommended antibiotic must be effective against the specific bacterial species involved.
- Tetanus toxoid is a type of vaccine.
- Vaccinations are effective in preventing tetanus.
- An epidemiological study conducted in Sydney identified a trend of increasing emergency department visits related to traumatic brain injuries among 5-17 year-olds playing contact sports.
Optics
- A ray diagram showing an observer viewing the image of an object O in a plane mirror should illustrate the object, the observer, the mirror, and the reflected rays forming the image.
- When a convex lens forms an image, either a real or a virtual image can be formed.
- The real image is formed on the other side of the lens from the object.
- The virtual image is formed on the same side of the lens as the object.
- Converging lenses converge light rays, while diverging lenses diverge light rays.
- In a ray diagram for a convex lens, the focal point is the point where parallel rays of light converge.
- The image formed by a convex lens can be magnified or diminished depending on the position of the object relative to the lens.
- The eye's cornea and lens refract light to focus an image on the retina.
- The retina contains photoreceptor cells, which convert light energy into electrical signals.
- The optic nerve transmits these electrical signals to the brain.
- The cornea is the transparent outer layer of the eye which refracts light.
- The iris is the colored part of the eye which controls the amount of light entering the eye.
- The lens is a transparent structure that focuses light.
- The image formed by the eye is real, inverted, and diminished.
- The image formed in a plane mirror is virtual and upright.
- Myopia occurs when the eye is too long or the lens is too strong which means the image is formed in front of the retina.
- Concave lenses are used to correct myopia.
Chemical Reactions II
- Complete combustion occurs when there is sufficient oxygen.
- Incomplete combustion occurs when there is insufficient oxygen.
- CO2 is produced during complete combustion and causes global warming.
- CO is produced during incomplete combustion and causes carbon monoxide poisoning.
- Methane (CH4) and Ethane (C2H6) are examples of organic compounds, and burn with a blue flame in a Bunsen burner.
- The Bunsen burner uses a fuel gas such as natural gas, propane, or butane.
- The fuel gas burns with a yellow flame when there is insufficient air.
- The fuel gas burns with a blue flame when there is sufficient air.
- A pale blue flame is produced when the air hole is half open, while a pale blue flame with a distinct inner cone is produced when the air hole is fully open.
- The pale blue flame with an inner cone is hotter than the former.
Electrical Circuits II
- The potential difference across a resistor is measured in volts.
- The unit for current is Amperes.
- The resistance of a resistor is measured in Ohms.
- The current flowing through a resistor is directly proportional to the potential difference across it.
- Ohm’s Law is used to calculate the relationship between potential difference, current and resistance.
- Energy is measured in Watts.
- The power dissipated in a resistor is the rate at which electrical energy is converted into heat energy.
- Power is calculated by multiplying the potential difference and the current.
- In a series circuit, the current is the same at every point.
- In a parallel circuit, the potential difference is the same across each component.
- When resistors are connected in parallel, the total resistance is always less than the smallest individual resistance.
- The combination of resistors can be used to create circuits with specific resistances.
- The total power in a parallel circuit is equal to the sum of the powers dissipated in each branch of the circuit.
- The same amount of current flows through each resistor in a series circuit.
- The current flowing through each resistor in a parallel circuit is different.
- The equivalent resistance of a series circuit is the sum of all the resistances in that circuit.
- The equivalent resistance of a parallel circuit is the reciprocal of the sum of the reciprocals of the resistances of each branch of the circuit.
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Description
Test your knowledge on infectious and non-infectious diseases, including examples and pathogenic mechanisms. Additionally, explore concepts related to imaging, mirrors, and lens focusing. This quiz assesses your understanding of key biological principles.