Motor neurons are involved in the skeletal muscle contractions in vertebrates, as the process is a synaptic one. These occur due to a conscious effort by the brain, from which these signals originate. In some reflexes, the signal originates from the spinal cord.
Two amino acids can be joined by a protein.
Well, basically, everything is made of atoms and cells. Those are youre building blocks for every life unit. The subunits of proteins are amino acids. These acids combine (in different combinations) to form different proteins.
The subunits of starch are carbohydrates. They build to form molecules of starch.
The
subunits of DNA are nucleic acids. These mix with other things to form
DNA. It is like the protein where different combinations create
different DNA strands/molecules.
Answer:
C.
Similar cells do not cooperate together.
Explanation: