Name a defining characteristic of adaptive immunity

What will be an ideal response?


This type of immunity consists of recognition of specific antigens and lasts for a long time.

Biology & Microbiology

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Glycogen is to animal cells as ________ is to plant cells.

A. lipid B. cellulose C. starch D. protein E. sugar

Biology & Microbiology

The purpose(s) of two circuits in a closed circulatory system is to ____

a. collect and distribute blood within the heart b. take blood to and from all parts of the body c. take blood to and from the lungs d. keep oxygenated and deoxygenated blood separate e. allow oxygenated and deoxygenated blood to mix

Biology & Microbiology

Many kinds of disease-causing bacteria are resistant to the standard antibiotics that we use to control them. This is because 

A. when bacteria are exposed to antibiotics they mutate. B. there is genetic variety within the species and those that already have genes for resistance are the ones that reproduce. C. new species of bacteria have evolved that are resistant to antibiotics. D. when the size of the population of a species of bacterium is reduced, genetic variety decreases.

Biology & Microbiology

The introduction of a new species into an area that has several different habitats and very rich resources, but no predators will likely lead to

A) mechanical incompatibility. B) adaptive radiation. C) temporal isolation. D) extinctions. E) limited speciation.

Biology & Microbiology