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The smallest unit of matter that exhibits the specific characteristics of an element is the:

How many covalent bonds can a single carbon atom form in a molecule?

What form of energy includes UV light, visible light, and FM radio waves?

What molecule is the currency of energy in the cell, used for energy in immediate biological reactions in phosphate bonds?

Out of the following cells, which is the first immune cell to respond to a microorganism in the body?

Inflammation or infection of the spinal cord is called:

Which of the following are chemoattractant (attract or recruit phagocytes to sites where they are needed during an infection)?

Which area has both transient and resident microbes that are continuously entering and exiting?

Veronica stared at a very intense “red” square for a few minutes, then shifted her gaze to a blank, white wall. Which of the following is correct?

Which of the following are initial signs and symptoms of methemoglobinemia?