Yes, All cells have<span> a Cell Wall</span>
Answer:
all of the above
Explanation:
if we use only one of the method than we cannot find the name of that unknown substance so we need to use all the possible methods to find the actual answer and name of the substance:)
Saliva
Rabies virus is an infectious virus which causes rabies in
human and animals. Rabies is transmitted mostly through the saliva of infected animals
such as birds and bats. Transmission of the virus through the human saliva is
rare. Signs and symptoms of rabies virus include fever, headache, partial
paralysis, and vomiting.
P-waves
Explanation:
P-waves are compressive longitudinal waves that are capable of passing through the liquid outer core.
- P-waves are also called primary waves.
- They are seismic waves that can pass through any medium
- They usually arrive at a seismic station first before the s-waves.
- P-waves have the highest velocity of all seismic waves.
- Together with the s-waves they are called body waves.
- P-waves moves parallel to the source and forms series of rarefactions and compressions
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Answer: Amino acids.
Explanation:
There were an famous experiment made by two biochemists called Stanley Miller and Harold Urey, in the year of 1953. They made it at the University of Chicago, USA.
In this experiment, Stanley Miller and Harold Urey simulated hypothetical conditions that Earth’s early atmosphere had, in order to test the hypothesis that gases (as the methane, carbon dioxide, ammonia, amonia and water vapor) allowed inorganic chemicals to form organic molecules.
After one week, these scientis found that organic compounds were formed.
Through this experiment the scientists Stanley Miller and Harold Urey obtained that several amino acids were formed (the most abundant was Glycine).
According to their work, they got 13 of the 22 aminoacids that are used to make proteins in living cells.