Explanation:
Γ-Aminobutyric acid (GABA) is a non-protein amino acid that is widely present in microorganisms, plants and animals. It is the main inhibitory neurotransmitter in the central nervous system (CNS) of mammals.
It plays the leading role in reducing neuronal excitability throughout the nervous system. In humans, GABA is directly responsible for the regulation of muscle tone.
Although, in chemical terms, it is an amino acid, in the scientific and medical communities they rarely refer to GABA as such because the term "amino acid" by convention refers to the α amino acids and GABA is not. It is also not considered as part of any protein.
In spastic diplegia in humans from an early age, GABA absorption is negatively affected by the nerves damaged by the lesion in the upper motor neurons characteristic of the condition which leads to the development of muscular hypertonia signaled by those nerves that are incapable of absorbing GABA.
Answer:
Explanation:
I would say A. Learning to ride a bicycle is a process of getting on and falling off. You have no idea how to do it properly without practice. That's learned.
But look out for D. I'm not sure that that isn't instinctive. Somewhere along the line I think even a baby knows not to let his/her eyes be touched. Is it learned? It's close but A is a much better answer.
The salmon is instinctive. The plant doesn't learn to turn towards the sun. It does so because more food is produced.
PART 1
1. The answer is low frequency electromagnetic waves are able to go around obstacles due to their larger wavelengths. This characteristic of lower frequency waves is due to their ability to diffract around obstacles such as buildings and hills. Therefore, they transmit over long distances unlike high frequency electromagnetic waves.
2. One disadvantage is interference. Electromagnetic waves of the same frequency transmitted at the same time will interfere with one other and therefore the signal will be lost or scrambled. Other electromagnetic waves such as microwaves are affected (interfered with) by weather elements.
3. Analogue signals are continuous signals with wave-like properties while digital signals are discrete signals or pulse (ons (1s) and offs (0s) that represent bits). Analogue signal is represented by a sine-wave while digital signal is represented by discrete squares waves.
4. Digital signals are less immune to eavesdropping unlike analogue signals. Analogue signal is also more prone to distortion unlike digital signal. Digital signals transmit more data than analogue signals. Digital signal draw less energy to transmit compared to analogue signal.
5. Broadcasting of TV is nowadays using digital signals due to the high number of available channels. Computers and the interne utilize digital signaling to transmit data. Controls systems such as radar system also use aspects of analogue waves. Sensors also utilize analogue waves especially transducers such as seismology equipment.
PART 2
1. One way is by sending radio waves to probes sent out in space to give them commands during exploration. Radio telescopes also pick up naturally-occurring radio waves from space and analyze the data to make conclusions about space and the astronomical objects.
2. Radio waves are used in communication by transmitting data over long distances. One example is its use TV transmission. Another is through military defense of airspace. The radio waves are used to detect enemy intrusion into restricted airspaces using radar.
3. It is common that signal from the environment will be in analogue signal format. The conversion to digital signals allows for the digital equipment in the telescope to interpret and analyze the data. Telescopes prefer digital equipment because they consume less power, handle more data, and are less prone to intrusion, and distortion, hence more secure to analogue equipment.
Following are the choices:
a. nonrenewable energy sources b. renewable energy sources
c. carbon sequestration d. recycled plastics
The correct answer is:
b. renewable energy sources
Explanation:
Renewable energy is energy that is obtained from renewable resources, which are naturally provided on a human timescale, such as sunlight, wind, rain, tides, waves, and geothermal heat. Renewable energy compares to the provision of energy via renewable sources which are simply replaced fast enough as being used.
Answer:
The correct answer is - Altimeter.
Explanation:
An altimeter is a sensor that is present in the new Fitbit. Altimeter measures changes in air pressure or barometric pressure. This sensor is used to count floors and use each 10 feet elevation as one floor.
Altimeter shows reading by the pressure of the air and every time the air pressure increases altitude is decreases and if air pressure decreases there is an elevation in altitude from sea level.
