16. Development of organisms and continuity of life
A section of Biology, 5090
Listing 10 of 348 questions
A virus is a type of pathogen. shows the external structure of a virus. F Identify component F. Identify one component of a virus not shown in . Pathogens may be transmitted to humans either by direct contact or indirectly. List two of the human body’s barriers to the entry of pathogens. If a virus is able to pass through the body’s barriers, an immune response takes place. Antibodies are produced during this immune response. Name four chemical elements that will always be present in an antibody molecule. Explain how the structure and function of an antibody molecule are important in an immune response. The average length of pregnancy in an adult human is 40 weeks. A human mother may give birth to her baby before the end of the usual length of pregnancy. This is known as a premature birth. Suggest why babies born prematurely are at higher risk of developing some infectious diseases than babies born after 40 weeks of pregnancy. Suggest one action that a mother can take to protect her premature baby from infection in the weeks after birth.
5090_w24_qp_22
THEORY
2024
Paper 2, Variant 2
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Questions Discovered
348