<span>1. Mutualism is a type of relationship that can be seen between two individuals of two different species to obtain benefits for both of individuals.
Examples : Coral polyps and zooxanthellae
bee and flower
Lichens
Rhizobium and root nodules
Ungulates and bacteria which live in their intestines
</span><span>2. Commensalism (this is the correct word) is a type of relationship between two organisms which belonged to two different species that one individual obtains benefits while other doesn't have any harm or benefit.
Examples : Remora and sharks
Orchids and trees
Pseudoscorpions and Beetles
Cattle Egrets and Livestock
hermit crab and sea anemone
</span>
3. Parasitism is a relationship between two organisms of two different species where one individual (parasite) gets benefits by harming other individual (host).
Examples : <em>Cuscuta</em> (parasite)<span> and angiosperms (host)
Parasitic viruses (parasite) and human (host)
Tape worms (parasite) and pigs (host)
Flukes (parasite) and human (host)
Parasitic bacteria (parasite) and human (host)</span>
Whether the effect of a neurotransmitter is excitatory or inhibitory depends on the receptor it binds to.
<h3>What is Neurotransmitter?</h3>
A neurotransmitter may be defined as the chemical substances present within the synaptic vesicles and transmitting the impulse through synapses.
Examples of excitatory neurotransmitters are glutamate, norepinephrine, epinephrine, etc. Such neurotransmitters promote the electrical impulse and allow the passage of messages.
Examples of inhibitory neurotransmitters are serotonin, glycine, GABA, etc. Such neurotransmitters inhibit the passage of electrical impulses and block information.
Therefore, it is well described above.
To learn more about Neurotransmitters, refer to the link:
brainly.com/question/26387085
#SPJ1
Answer:IT is digested by the chemical juices pouring from the gallbladder
Explanation:
The characteristics of T lymphocytes that are involved in specific immunity includes;
They mature in the thymus
They move freely among lymphoid tissues and connective tissues
They are responsible for cell mediated immunity.
Specific immunity is a subsystem of immune system that is comprised of highly specialized, systemic cells and processes that prevent the growth of pathogens or eliminate them from the body.
