<span>B. Marsupials. </span>Amniotic eggs is a unique kind of egg because they possess a semipermeable shell to protect the egg but it also allows gas exchange. Inside an amniotic egg contains the amnion, chorion and allantois. Animals that lay amniotic eggs are called amniotes, which include reptiles, birds, dinosaurs, monotremes (platypus).
One reason could be that they do not have most of the seven characteristics of life (reproduction, homeostasis, heredity, response to the environment, growth, cellular organization, and metabolism.)
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The death of nearby cells and the presence or absence of certain hormones can impact the cell cycle
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The immune system review. B cells, White blood cells that produce antibodies and aid in immunological memory .The body's most important nonspecific defense is the skin, which acts as a .The B cell then internalizes the antigen and presents it to a specialized helper. Innate immunity. Antigens are anything that causes an immune response. such as secretions, mucous, bile, gastric acid, saliva, tears, and sweat. General Immune Responses .There are many types of white blood cells, or leukocytes, that work to defend and protect the. As a result, the immune system can react more quickly the next time it comes into . These cells belong to the so-called cellular defense. It makes sure, for example that bacteria that have entered the skin through a .As the innate immune response is not specialized for specific pathogens, it does not. Natural killer cells play a role in nonspecific cell-mediated immunity by attacking . It launches a more potent secondary immune response . Detection of antigen-antibody complexes is carried out through the following steps. For some illnesses, such as measles and chickenpox, having the disease . either from having an illness or from vaccination, are examples of active immunity. their mothers' antibodies and pathogen-fighting white cells cross the placenta to .a rabid animal might receive rabies antibodies (passive immunization to create .
Explanation:
Explanation:
body cells- intake the nutrients and specialized into to carry function.
tissues- have similar structure to function well in body like, connective tissue, muscle
organs- carry different identity of function in body like, heart(to pump blood) kidney( for filter and excrete wastes
