Answer:
The correct answer is -
the neurotransmitters are broken down in the synapse
The presynaptic neuron absorbs the neurotransmitters
Explanation:
The termination of the neurotransmitters is essential as if they can cause harm by continuing the stimulus effect on the muscles or cells. To clean up these neurotransmitters there are two ways- Degradation of neurotransmitters with the help of enzymes in the synapses or synaptic cleft and the presynaptic neurons absorbs or suck up neurotransmitters. The neuron (presynaptic neuron) is that releases the neurotransmitter like dopamine, serotonin, is the one that re-uptake it.
This reuptake is done by transporter proteins that are are symporters in nature as these proteins pump neurotransmitters as well as ions back into the neuron.
Answer:
A) Ice cream starts dripping down the sides of an ice cream cone: melting
B) Fog is created by using dry ice: sublimation
C) Frost forms on trees on a very cold day: deposition
D) The mirror gets fogged up when you breathe on it: condensation
E) Your wet hair dries after a few minutes: evaporation
F) Liquid glass cools and hardens : freezing
Explanation:
Sublimation process where solid state changes to gaseous state by escaping liquid state.
Deposition process where gaseous state changes to solid state by escaping liquid state.
Condensation process where gaseous state changes to liquid state.
Melting is the process where solid state changes to liquid state.
Evaporation process is a process where liquid state changes to gaseous state.
Freezing is the process in which liquid changes to solid state.
Answer:
According to arthropolis.com a day lasts 24 hrs on June 21 at the artic circle
Explanation:
Answer:
No
Explanation:
Viruses have no way to control their internal environment and they do not maintain their own homeostasis
Explanation:
Red-shift
Emission spectra
Light from a star does not contain all the wavelengths of the electromagnetic spectrum. Elements in the star absorb some of the emitted wavelengths, so dark lines are present when the spectrum is analysed. Different elements produce different patterns of dark lines. The diagram shows part of the emission spectrum of light from the Sun.
A gradient colour spectrum of the sun.
Spectra from distant galaxies
Astronomers can observe light from distant galaxies. When they do this, they see it is different to the light from the Sun. The dark lines in the spectra from distant galaxies show an increase in wavelength. The lines are moved or shifted towards the red end of the spectrum. This effect is called red-shift. The diagram shows part of the emission spectrum of light from a distant galaxy.
A gradient colour spectrum of a distant star.
Red-shift and speed
Astronomers see red-shift in virtually all galaxies. It is a result of the space between the Earth and the galaxies expanding. This expansion stretches out the light waves during their journey to us, shifting them towards the red end of the spectrum. The more red-shifted the light from a galaxy is, the faster the galaxy is moving away from Earth
