An inanimate material (solid object, liquid, or air) that serves as a transmission agent for pathogens is called ______.
Fill in the blank(s) with the appropriate word(s).
vehicle
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Transient local changes in the resting potential of a cell are called graded potentials because they can vary in size
In a phenomenon known as ________, many incoming signals produce progressively larger graded potentials in a cell — larger than any single impulse would produce alone. Fill in the blank(s) with correct word
The ability of rats to cope with stress as adults can be affected by ____.
A. a nurturing mother B. the number of siblings they have C. the temperature they are raised in D. the altitude they are born at E. their sex
A pathogen is a disease-causing organism, but not all pathogens are alike. Some pathogens are more dangerous than others. When describing the relative ability of a pathogen to cause disease, we are considering its ________
A) emergence B) infectivity C) virulence D) pathogenicity
In photosynthesis, electrons are transferred from _____ to help make_____.
Fill in the blank(s) with the appropriate word(s).