All Scientists Who Study Early Humans Agree on the Basic

question 66

Multiple Choice

All scientists who study early humans agree on the basic concept that

• A)Humans evolved from apes.
• B)Some of the earliest tools were made of metal.
• C)Humans originated in Africa.
• D)Humans evolved from the African Eve gene.
• E)Humans originated in Australia.

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Definitions:

Different Antigen

Refers to a substance or molecule that is recognized by the immune system as foreign, eliciting an immune response. Each antigen is distinct, allowing the body to identify various pathogens or foreign compounds specifically.

IgG Antibodies

A type of antibody that is the most common and widely distributed in body fluids, playing a crucial role in immune response.

Memory Cells

A type of immune cell that remains in the body long term after an infection has been defeated, enabling a faster and stronger response upon re-exposure to the same pathogen.

IgM Antibodies

The first type of antibody the body makes when it fights a new infection, providing an initial line of defense against pathogens.