Month: December 2020

A synthetic substitute for quinine used in treating malaria.  

Pertains to early, less civilized cultures. Undeveloped, undifferentiated, rudimentary.  

Using the environmental stimuli to make a schema salient.  

The order of animals including humans, apes, and monkeys. An order of vertebrates belonging to the class Mammalia, subclass Theria, including the lemurs, tarsiers, monkeys, apes, and humans. This order is most highly developed with respect to the brain and nervous system.  

The removal of easily sedimented solid materials by the passage of the water through grit chambers. Some fats, carbohydrates, and proteins may also be removed, secondary water treatment; tertiary water treatment.  

The first stage of syphilis most generally manifested by the appearance of a painless lesion, the chancre.  

A cell formed by mitosis of a spermatogonium.  

Biological traits that differentiate females from males. An inherited trait that influences the development of the reproductive organs.  

The first response of the immune system to an antigen secondary response.  

Reinforcement that depends little or not at all upon previous learning.