MODULE 3 SET C

Question 1

refers to the electrical phenomena of life processes

Answer 1

BIOELECTRICITY

Question 2

study of electrical aspects of living things

Answer 2

ELECTROPHYSIOLOGY

Question 3

branch of biophysics that studies the nerves

Answer 3

ELECTROPHYSIOLOGY

Question 4

concerned with the study of the excitable tissues

Answer 4

ELECTROPHYSIOLOGY

Question 5

specialized cells that are able to convert energy from outside stimulus into an electrical response

Answer 5

SENSORY CELLS

Question 6

Sound vibrations in the air create ——– that pushes against hair cells moving them.

Answer 6

Pressure

Question 7

specialized sensory cells that create a nerve impulse in response to an electric field

Answer 7

ELECTRORECEPTIVE CELLS

Question 8

These cells are used for navigation

Answer 8

ELECTRORECEPTIVE CELLS

Question 9

These cells are similar to muscle cells.

Answer 9

ELECTROGENIC CELLS

Question 10

Build up strong electric charges on the surface, and used for hunting and self-defense.

Answer 10

ELECTROGENIC CELLS

Question 11

Only mammal that has a sense of electroreception

Answer 11

platypus (Ornithorhynchus anatinus)

Question 12

use a specialized sensory guidance system for environmental navigation, communication, and sex recognition via echolocation

Answer 12

WEAKLY ELECTRIC FISH

example: GYMNARCHUS

Question 13

The fish has stacks of modified tissue called ————– located in a regular array along their bodies and through these maintain a consideravble electrical potential difference between the head and tail,

Answer 13

ELECTRIC ORGANS

Question 14

TRUE OR FALSE

Eels have the unique ability to discharge both weak and strong electric current.

Answer 14

TRUE

Question 15

Weak current: navigation: Strong current: ————————–

Answer 15

weapon and self-defense

Question 16

force field that exists whenever an electric force acts on a charge

Answer 16

ELECTRIC FIELD

Question 17

a region of space at every point of which an appropriate test object would experience a force

Answer 17

FORCE FIELD

Question 18

referred to as voltage

Answer 18

ELECTRIC POTENTIAL DIFFERENCE

Question 19

It is equal to the work per unit charge required to move a positive test charge from one point to another

Answer 19

ELECTRIC POTENTIAL DIFFERENCE

Question 20

amount of net charge passing through a section of the conductor per unit time. It is the time rate flow of net charge

Answer 20

ELECTRIC CURRENT

Question 21

Explores the electrophysiology and mechanics of the senses: seeing, hearing, touch, balance, smell and taste

Answer 21

SENSORY BIOPHYSICS

Question 22

how proteins in the eye respond to different energies of light, how electrical signals from the retina are transmitted to th ebrain, and how muscles move the eye, focus the eye and adjust the amount of light entering the eye

Answer 22

SENSORY BIOPHYSICS IN VISION

Question 24

It refers to size and the unit of distance

Answer 24

wavelength

Question 25

It refers to the energy or the number of vibrations

Answer 25

FREQUENCY

Question 26

branch of science and technology that is devoted to production, transmission, control, processing, transformation, reception, and interaction with material media of sound, ultrasound and infrasound

Answer 26

ACOUSTICS

Question 27

A longitudinal wave that consists of sequence of pressure pulses or an elastic displacement of the material, whether gas, liquid, or solid, is called an

Answer 27

ACOUSTIC WAVE

Question 28

the individual particles vibrate back and forth along the direction in which the wave travels

Answer 28

Longitudinal or compressional wave

Question 29

The compressed portion of the wave or where the particles vibrate in the direction of wave propagation

Answer 29

COMPRESSION OR CONDENSATION

Question 30

Wave with frequencies over 20000Hz, which is about the upper limit of human hearing; High energy and rectilinearity of propagation

Answer 30

ULTRASONIC WAVES

Question 31

longitudinal waves with frequencies below the audible range (less than 20Hz); has strong vibrations, and characterized by an ability to cover long distances and circumnavigating obstacles with little dissipation; generated by nature, e.g. earthquakes, hurricanes, wind, thunder, etc.

Answer 31

INFRASONIC WAVES

Question 32

longitudinal waves that lie within the range of sensitivity of the human ear, approximately 20 to 20 kHz.

Answer 32

SOUND WAVES

Question 33

Three Aspects of Sound

Answer 33

**V**ibrating Source **E**lastic Medium **R**eceiver (ear)

Question 34

Characteristics of Sound

Answer 34

**P**itch **Q**uality or Timbre **L**oudness

Question 35

vibrating object which sends the disturbance through the surrounding medium

Answer 35

Vibrating Source

Question 36

Elastic Medium

Answer 36

which transmits the disturbance from the source to the receiver in the form of compressional/longitudinal waves.

Question 37

where the sensation of sound is produced

Answer 37

Receiver or ear

Question 38

the rate at which vibrations are produced

Answer 38

Pitch

Question 39

depends upon the frequency of a sound source

Answer 39

Pitch

Question 40

sound of irregular vibration or that has no definite range of frequencies

Answer 40

Noise

Question 41

determined by the number and relative intensities of the superposition of harmonic waves

Answer 41

Quality or Timbre

Question 42

It is also depending on the presence of overtone

Answer 42

Quality or Timbre

Question 43

# TRUE OR FALSE A high-pitch sound has a high vibration frequency, while a low-pitch sound has a low vibration frequency

Answer 43

TRUE

Question 44

amount of auditory impression or sensation that we get from a sound

Answer 44

LOUDNESS

Question 45

describes the amplitude of vibrations the sound induces in the eardrums and the magnitude of the pressure variation caused by sound waves

Answer 45

LOUDNESS

Question 46

For a given frequency the loudness of a sound is closely related to the

Answer 46

INTENSITY OF SOUND

Question 47

FORMULA OF Temperature Dependence of the Speed of Sound in Air

Answer 47

𝒗𝑻 = 𝟑𝟑𝟏 + 𝟎. 𝟔 **T**

Question 48

perceived by the ear as loudness

Answer 48

INTENSITY OF SOUND

Question 49

referred to as the threshold of hearing

Answer 49

INTENSITY_0 = 1 x 10^( -12) W/m^(2)

Question 50

Threshold of pain

Answer 50

1.0 W/m^(2)

Question 51

defined as the power transported across unit area perpendicular to the direction of energy flow

Answer 51

intensity

Question 52

used for comparing intensity of one sound and the intensity of a reference sound

Answer 52

Intesity level (beta)