Please select all the primary functions of the immune system.

> Surveillance of the body
> Attack and destruction of self cells
> Recognition of self and foreign material such as pathogens
> Attack and destruction of foreign invaders
> Move fluid from tissue spaces into systemic circulation


> Surveillance of the body
> Recognition of self and foreign material such as pathogens
> Attack and destruction of foreign invaders

Biology & Microbiology

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When calcium levels rise, the __________ secrete(s)

__________, which __________ osteoclast activity. a. parathyroids; calcitonin; suppresses b. thyroid; calcitonin; suppresses c. thyroid; calcitonin; enhances d. thyroid; PTH; suppresses e. parathyroids; PTH; enhances

Biology & Microbiology

The gene that codes for the repressor protein of the E. coli lac operon is constitutive; therefore, the lac operon is

typically:a. turned off. b. turned on. c. unaffected by the repressor protein. d. constitutive. e. activated by the repressor protein..

Biology & Microbiology

Neurons known as "pacemaker" cells:

A) are the output cells for oscillator circuits B) have inherent spontaneous rhythms C) control heart heart D) None of the above

Biology & Microbiology

An organism that contains altered genes is considered all of the following EXCEPT

A) a genetically modified organism (GMO). B) genetically engineered. C) polymorphic. D) transgenic.

Biology & Microbiology