Answer:
DNA, or deoxyribonucleic acid, is the hereditary material in humans and almost all other organisms. Nearly every cell in a person’s body has the same DNA. Most DNA is located in the cell nucleus (where it is called nuclear DNA), but a small amount of DNA can also be found in the mitochondria (where it is called mitochondrial DNA or mt DNA). Mitochondria are structures within cells that convert the energy from food into a form that cells can use.
Explanation:
Answer:
Female salmons create the hole where eggs are laid and fertilized by male sperm cells.
Explanation:
Salmon are fishes which live in salt water oceans and fresh water streams. They return to their home stream and lay their eggs at the bottom of the stream by digging it. This is usually done by The female salmon turning on her side and beating the river bed with powerful sweeps of her tail. She does this until the hole is a foot and a half deep. She then lays the egg there which is then fertilized with speed by the male.
She then dies in the same place in which she was born about 5 years earlier.
The cell body must undergo Anterograde transport to reach the synaptic knobs.
The synaptic feature is to transmit nerve impulses between two nerve cell neurons or among a neuron and muscle cellular. Synapses connect one neuron to every other and are thus liable for the transmission of messages from the nerves to the mind and vice versa.
Synapses are a part of the circuit that connects sensory organs, like those who come across aches or touch, within the peripheral frightened gadget to the mind. Synapses connect neurons inside the mind to neurons inside the rest of the frame and from those neurons to the muscle tissues.
Synaptic transmission is the method at synapses by way of which a chemical sign is launched from one neuron and diffuses to other neurons or goal cells where it generates a sign which excites, inhibits, or modulates mobile hobby.
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Answer:
Cambrian explosion
Explanation:
Cambrian explosion is a geological event that happened during the Cambrian age (541 million years ago). In this period, most of the animal phyla (including marine) appeared and their geological record is preserved in the form of fossils. The period lasted for 13-25 million years. Before this period, the organisms were very simple. They were mostly unicellular in nature and were living in the form of colonies.
The remaining three options are incorrect. They are tectonic events that reflect movement of continents in different geological times. None of them resulted in the diversification of (marine) animal phyla.