Answer:
Motor neuron.
Explanation:
Muscle contraction begins with signal. The contraction occur when nervous system send signals. The impulse which is called signal is travel through a motor neuron.
The whole process include following three steps:
1) Message is traveled from nervous to muscular system and trigger the chemical reaction.
2) This chemical reaction causes the muscle fibers to reorganize in such a way that shorter the length of them which is called contraction.
3) when this signal is no longer remain , reverse chemical process occur and muscles relax.
Answer:
The way a species behaves makes want or need to do certain things in certain circumstances. When those circumstances change so does the species. Causing the evolution of the species
The nucleic acids can be defined as the linear chain of the nucleotides. They are one of the four major biological macromolecules. The nucleic acids are composed of the DNA (deoxyribonucleic acid) and RNA (ribonucleic acid). With the help of the nucleic acids, it is possible to determine whether an organism is a tree, mouse, or a bacterium or human as all the organisms have different sequence of the nucleotide bases.
Answer:
maybe 75% of them were purple and 25% were white
Answer:
It is to produce a transmembrane proton electrochemical gradient as a result of the redox reactions
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