Answer:
The correct answer is option C.
Explanation:
Cardiac muscle is present only in the Heart of organisms which is involuntary in its action. The heart helps the blood to pump throughout the body.
Cardiac muscle shows the presence of intercalated discs which contain desmosomes and gap junctions. It is the presence of these gap junctions the muscle cells of the heart functions as a single functional unit due to the transmission of depolarizing current from cell to cell to different chambers of the heart.
Thus, option C is the correct answer.
Answer:
C
Explanation:
Because meiosis create four genetically different haploid cells (this cells are gametes/sex cells)
Answer:
Earthquakes
Explanation:
This would happen because we have devices such as seismographs to record the motion of the ground during an earthquake. Without that, we wouldn't know how big the earthquake is and how to prepare for survival.
The most important idea is that the genetic material of any organism must be able to accurately replicate itself at least every generation (or for multicellular organisms at each cell division).
Base pairing (A-T or U and C-G)allows DNA and RNA (eg in polio virus, see Wikipedia page on RNA dependent RNA polymerase) to create a copy of themselves, when the appropriate enzymes are present. Proteins have no way of making a copy of themselves.
Stability is probably the main reason DNA is the most common genetic material. DNA has no enzymatic activity and was probably selected for to maintain the integrity of the genetic material (rather than having to perform a function for the cell/virus, during which it may be destroyed). The double helix structure also protects its integrity, and proofreading enzymes have also evolved which correct most of the mistakes made at DNA replication. RNA viruses don't have this mechanism- which could be said to be an advantage (as they can rapidly change and therefore avoid their hosts' immune systems), however in non-parasitic organisms most mutations in a gene would lead to a loss of an essential function and the extinction of that genome.
I don't think either of these reasons are relevant, but I think the main reasons retroviruses convert their RNA to DNA are so they can use the host cell's replication machinery (this was they do not need to encode as many genes), and secondly they need avoid the antiviral mechanisms of the cell, which would destroy any double stranded RNA molecules found (even if the virus was single stranded, dsRNA would have to be produced at replication).
Dendrites are the processes of a neuron that receive signals from other neurons. Dendrites receive signals from other neurons via specialized junctions known as synapses.
<h3>What is Dendrites?</h3>
- The receiving end of a neuron is referred to as a dendrite. The ability of a neuron to generate an action potential is determined by the synaptic impulses exchanged between its axons and dendrites.
- Cell Body is in charge of controlling the activities of neurons. Myelin protects the axon while also speeding up and simplifying message transmission.
- Other neurons send messages to dendrites. Axons carry signals from the cell body to neighboring neurons' dendrites. It normally receives incoming impulses from other neurons via its dendrites.
- The signal sent to other neurons travels along the axon. Despite having millions of dendrites, a neuron only has one axon. Within a neuron's fourth special part
To learn more about Dendrites, refer to
brainly.com/question/20065619
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