AP BIOLOGY

Detailed explanation-1: -Breast milk also contains antibodies, which means that babies who are breastfed have passive immunity for longer. The thick yellowish milk (colostrum) produced for the first few days following birth is particularly rich in antibodies.

Detailed explanation-2: -A newborn baby acquires passive immunity from its mother through the placenta. People can also get passive immunity through antibody-containing blood products such as immune globulin, which may be given when immediate protection from a specific disease is needed.

Detailed explanation-3: -Key Points. Immunity is transferred through the placenta in the form of antibodies, mainly IgG and IgA. Natural passive immunity can also be transferred through breast milk. Natural passive immunity is short-lived after the birth of the child.

Detailed explanation-4: -Breastfeeding can help protect babies against some short-and long-term illnesses and diseases. Breastfed babies have a lower risk of asthma, obesity, type 1 diabetes, and sudden infant death syndrome (SIDS). Breastfed babies are also less likely to have ear infections and stomach bugs.

Detailed explanation-5: -Passive immunity can occur naturally, such as when an infant receives a mother’s antibodies through the placenta or breast milk, or artificially, such as when a person receives antibodies in the form of an injection (gamma globulin injection).