Mi 1.2 and 1.3 vocab
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16 Terms
Antibiotic
A substance bt or derived from a microorganism and able in dilute solution to inhibit or kill another microorganism
Antibiotic Resistance
Resisrance to one or more antibiotics, usally due to additional genetic information
Conjugation
The one-way transfer of DNA between vbacteria in cellular contact
Nucleoid
The DNA-containing area of a bacterial cell
Plasmid
A small ring of DNA that carries accessory genes separate from those of the bacterial chromosome
Transduction
The transfer of genetic material from one organism (such as bacterium) to another by a genetic vector
Transformation
The genetic modification of a bacterium by incorporation of free DNA from another ruptured bacterial cell
Audiogram
A graphic representation of the relationship between vibration frequency and the minimum sound intensity for hearing
Cochlear implant
An electrical prosthetic device that enables individuals with sensorineural hearing loss to recognize some sounds and that consists of an external microphone and speech processor that receive and convert sound waves into electrical signals, which are transmitted to one or more electrodes implanted in the cochlea, where they stimulate the auditory nerve.
Conductive hearing loss
Hearing loss or impairment resulting from interference with the transmission of sound waves to the cochlea
Hearing aids
An electronic devic usually worn by a person for amplifying sound before it reaches the receptor organs
Inner ear
The essential part of the vertebrate organ of hearing and equilibrium that includes the vestibule, the semicircular canals, and the cochlea.
Middle Ear
The intermediate portion of the ear contains a chain of three ossicles that extends from the tympanic membrane to the oval window and transmits vibrations to the inner ear
Outer ear
The outer visible portion of the ear that collects and directs sound waves towards the tympanic membrane by way of a canal which extends inwards through the temporal bone.
Sensorineural hearing loss
Hearing loss or impairment resulting from problems with the auditory nerves.
Sound
Mechanical energy that is transmitted by longitudinal pressure waves in a medium (such as water or air).