Zadanie 5a
Explain how a population could establish herd immunity to reduce outbreak risk.
Defence against disease
Umiejętności w tym dziale
Umiejętności z tego działu sprawdzają 42 zadania wzorowane na arkuszach IB z lat 2022–2026. Dział pojawia się w 30 z 57 arkuszy w bazie.
Zadania z tego działu: 42 Otwórz w wyszukiwarce z filtrami
Zadanie 5b
Outline persistent changes that enable an immune person to respond to later exposure.
Zadanie 5c
Deduce why Alpha requires a particularly high immune proportion.
Zadanie 5d
In this model, limited Gamma vaccine supplies are offered first to people at high risk of severe illness and workers with frequent exposure. Suggest reasons for this policy.
Zadanie 6
Proteins contribute to structure, recognition and defence. (a) Outline the general organization of a peptide. (b) Describe the four ABO blood groups and their molecular/genetic basis. (c) Explain the adaptive immune response to invading pathogens.
Zadanie 7
An unaffected couple has a child with phenylketonuria, an autosomal recessive disorder. Use P for the functional allele and p for the recessive allele. Other parts concern respiratory defence and gas exchange. (a) Describe how the disorder can be inherited in…
Zadanie 16
After an immune response has been activated, which cells secrete large amounts of specific antibody? A. Plasma cells derived from B lymphocytes B. Erythrocytes carrying oxygen C. Cytotoxic T lymphocytes killing infected cells D. Platelets initiating clotting
Zadanie 17
For a vaccine-preventable viral infection, which measure most directly builds population immunity that can also protect susceptible individuals? A. Giving antibiotics to every uninfected person B. Immunizing a sufficiently large proportion of people with an…
Zadanie 18
Three statements describe possible immune responses. I. Recognition of features shared by many pathogens II. A much stronger antigen-specific response after a second exposure III. Rapid engulfment of microbes by phagocytes Which statements describe innate…
Zadanie 18
A viral infection passes from an infected bat to a person. Which feature makes this event an example of zoonotic transmission? A. A pathogen crosses from a non-human animal into a human host B. The pathogen can survive in every animal species C. The disease…