The Race Against Death

Now the boy had developed a thick, gray ________ in his throat- a layer of dead tissue that could mean only one thing: diphtheria.

• membrane

• skin

• area

• matter

A __________ is a thin sheet of tissue or layer of cells acting as a boundary, lining, or partition in an organism.

• area

• skin

• lining

• membrane

Nome is located, was already partially frozen, ________ it impassable to ships.

• member

• rendering

• making

• composing

__________ means to cause to be or become

• membrane

• rendering

• composing

• allowing

It contained glass vials of amber-colored _________ packed in a padded container and wrapped fur and canvas.

• membrane

• rendering

• serum

• composite

__________ is the blood serum of an animal, used especially to provide immunity to a pathogen or toxin by inoculation or as a diagnostic agent.

• membrane

• rendering

• serum

• composition

And if ________ sets in, it becomes difficult to move, the body grows sleepy, and death may follow.

• membrane

• rendering

• serum

• hypothermia

__________ is a medical emergency that occurs when your body loses heat faster than it can produce heat, causing a dangerously low body temperature.

• membrane

• rendering

• serum

• hypothermia

By now, the entire country knew of Nome's _________.

• plight

• membrane

• disease

• rendering

______________-a dangerous, difficult, or otherwise unfortunate situation.

• membrane

• plight

• situation

• organization