Examlex
The length of time ( T ) in seconds it takes the pendulum of a grandfather clock to swing through one complete cycle is given by the formula where L is the length, in feet, of the pendulum, and
is approximately
. How long must the pendulum be if one complete cycle takes 8 seconds?
Fibroblasts
A type of cell found in connective tissue which produces collagen and other fibers.
Leukocytes
White blood cells that are part of the immune system, protecting the body against both infectious disease and foreign invaders.
Retroviruses
A group of RNA viruses that insert a DNA copy of their genome into the host cell in order to replicate, e.g., HIV.
Invading Organisms
Pathogens, such as bacteria, viruses, and parasites, that enter the body and cause various diseases or infections.
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