A Vaccine

question 62

Multiple Choice

A vaccine

• A)is a gamma globulin.
• B)conveys active immunity.
• C)contains antibodies.
• D)is the same as an antitoxin.

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Definitions:

Leakey's Hypothesis

A theory proposing that the development of bipedalism in human ancestors was driven by ecological changes that favored standing and walking on two legs.

Genus Homo

The taxonomic genus which includes modern humans (Homo sapiens) and closely related species.

Tool Use

The behavior of using objects as tools to perform tasks such as obtaining food, shelter, or for defensive purposes, observed in various animal species.

Homo Heidelbergensis

An extinct species or subspecies of archaic humans known from fossils dating from the Lower Paleolithic period, about 600,000 to 200,000 years ago.