Organic compounds and inorganic compounds differ from each other. Three differences are :
1. Organic compound has carbon and hydrogen atoms while the inorganic compound has other atoms.
2. Organic compounds make the important biomolecules such as amino acids, proteins, DNA, RNA, etc whereas the inorganic compounds make the salts, acids, bases, etc.
3. Organic compounds have carbon hydrogen bonds or carbon carbon bonds. These types are not formed in inorganic compounds.
Answer:
<u>acetylcholine</u>
Explanation:
In the pre-synaptic knob there are vesicles which contain a transmitter substance called acetylcholine. When an impulse reaches the synaptic knob, it stimulates the vesicles to move towards the pre-synaptic membrane releasing the acetylcholine.
The transmitter substance makes the membrane permeable. The neuromuscular junction contains the sensory neurone(afferent), motor neurones(efferent) and the relay neurones(connector).
The correct answer is:
A. leaves and dermal
Explanation:
The dermal tissue system protects the soft tissues of plants and handles interactions with the plants' surroundings. The epidermis is a dermal tissue that is usually a single layer of cells comprising the younger parts of a plant. It conceals a waxy layer named the cuticle that inhibits water loss. Plant parts that become woody no longer have dermal tissue as their outer layer because it is followed by periderm or cork. Just as our own covering assists to defend our bodies, the dermal layer of a plant has the same function.
