Almost the entire system of an embryo is made of cartilage,
whereas that of an adult is mostly made of bones.
<span>An </span>embryo<span> <span>is a
multicellular diploid eukaryote in an early stage of embryogenesis, or
development. In general, in organisms that reproduce sexually, an </span></span>embryo<span> develops from a zygote, the single cell
resulting from the fertilization of the female egg cell by the male sperm cell.</span>
<span>Biologically, an </span>adult<span> is a human being or other organism that has
reached sexual maturity.</span>
The correct answer between all
the choices given is the first choice or letter A. I am hoping that this answer
has satisfied your query and it will be able to help you in your endeavor, and
if you would like, feel free to ask another question.
Decomposers<span> get </span>nutrients<span> and energy by </span>breaking down dead organisms<span> and animal wastes. </span>Through<span> this process, </span>decomposers<span> release</span>nutrients<span>, such as carbon and nitrogen, back into the environment. These </span>nutrients<span>are </span>recycled<span> back into the </span>ecosystem<span> so that the </span>producers<span> can use them.</span>
Answer:
A presynaptic neuron knows when and how much of a certain neurotransmitter it has to release into the synapse by the frequency of the action potential.
Explanation:
Two nuerons connect to each other through synapse. When an action potential, or nerve impulse, arrives at the axon terminal, it activates voltage-gated calcium channels in the cell membrane, then the calcium which is present in hi highconcentration outside the neuron than inside, rushes into the cell. The Calcium then allows synaptic vesicles to fuse with the axon terminal membrane, releasing neurotransmitter into the synaptic cleft.
The nuerotransmitter than binds to the receptors at the post-synaptic cleft and causes the opening or closing of the channels, hence, depolarizing or hyperpolarizing the cells.This can produce a change in the membrane potential—voltage across the membrane of the receiving cell.
Answer:
Explanation:
The flowers are the reproductive structure of plants that produce fruits.
When the fruits produced by flowers has fragrance, the smell will attracts animals and even man to pluck and eat it. Once they finished consuming it , it will be disposed anywhere the animals find themselves.
If the fruits has sweet tasting, the animals or man that consumed it at the first time will constantly go to the pants to pluck more fruits because of its good tastes sand this will attract alot of animals or men to pluck more of it and take away, once this is done it is been easily disposed and found all over the place.