Exposure to an allergen sometimes causes a rapid and severe allergic reaction called

a. anaphylaxis

O b. asthma

O c. scleroderma

O d. idiopathic thrombosis

O e. immunodeficiency

Why different restriction enzymes make different dna fragments?

Diseases may spread more rapidly when an area is crowded so disease is considered to be what?

All fungi are ... A. eukaryotes and heterotrophic. B. eukaryotes and autotrophic. C. prokaryotes and autotrophic. D. prokaryotes and heterotrophic.

Where are the majority of antibodies found?

What would the magnification of a specimen viewed with a compound light microscope that has an objective power of 10x and an ocular lens power of 5x? a.) 5x b.) 15x c.) 500x d.

For which types of microbes would a microbiologist employ living host cells to support their growth?

What is the action of the binding of muscarine to its receptors in the digestive system?

A female impala has one or two calves and then spends months feeding and protecting them. a female salmon lays thousands of eggs and then returns to the ocean. what are some advantages from each type of life cycle?

What advantage does the membrane bound organelles give a eukaryotic cell over a prokaryotic cell? 1. The membrane bound organelles allow for multiple reactions to occur in the cell at the same time 2.

What is the relationship between earth, the sun, and the moon in space