Answer:
Response of the postsynaptic cell is dependent on the neurotransmitter release
Explanation:
Calcium (Ca2+) is essential for the propagation of the action potential since it is required for neurotransmitter release. When an action potential reaches the end of an axon, voltage-dependent Ca2+ channels open and Ca2+ ions bind to regulatory proteins, thereby initiating the release by exocytosis of neurotransmitters contained in the presynaptic vesicles at the synapse and modulating the transmission of a signal to another neuron (i.e. the postsynaptic site).
The question is incomplete as it does not have the options which are:
-Can the plant survive with few nutrients and little water?
-How large does the plant grow?
-What color is the plant?
-Does this plant have small or large leaves?
-How many offspring does this plant produce at one time?
Answer:
Can the plant survive with few nutrients and little water?
Explanation:
Pioneer species are considered those species of plants which are the first to colonize the habitat in ecological succession.
They are considered the pioneer as they grow in the limited resources either on the barren lands or on the rocks. These plant species plays an important role in succession as they enrich the soil with the nutrients as they can produce acidic compounds which can degrade the rocks or them upon degradation and decomposition enrich the soil with nutrients.
Since they are the first species to colonize an area without nutrients therefore whether the species will grow in the limited nutrients and the water will be most relevant.
Thus, the selected option is correct.
Answer:
Starting at the spinal cord, the subdivisions of the brachial plexus are (in order): roots, trunks, divisions, and cords.
Explanation:
The brachial plexus is a nervous network that is located at the base of the neck, and connects the spinal cord to all peripheral nerves in the arm. It is composed of five spinal roots (C5, C6, C7, C8 and T1) that join, forming three primary trunks: the upper trunk, which comes from the anterior branches of nerves C5 and C6, the middle trunk, comes from the anterior branch of nerve C7 and the lower trunk: it comes from the anterior branches of nerves C8 and T1. Once the clavicle is passed, each trunk is divided into an anterior and a posterior division, which will be reorganized to form the secondary trunks, fascicles or cords. The set of the posterior branches forms the posterior cord. The union of the anterior branches of the upper and middle trunk forms the lateral cord and the anterior branch of the lower trunk gives rise to the medial cord.
The bonding that holds it together is a covalent bond
