hormones and chemicals made by nerve cells...option 4
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Two primary agents of cellular communication are hormones, which are chemical messengers released into the bloodstream to travel to target cells, and neurotransmitters, which are chemical messengers released by neurons to signal neighboring cells.
A gap junction forms when a channel is created between two adjacent plasma membranes. This type of cellular junction allows for direct communication and passage of small molecules between the two cells.
The mitochondria is where two important steps, the Kreb's cycle and oxidative phosphorylation, of cellular respiration take place. This organelle is central in respiration and is often called "the powerhouse" of the cell.
Yes!!, Viruses are non cellular parasitic agents. They are not included in the classification of organisms. They consist of two parts: and outer capsid(composed of proteins) and an inner core of nucleic acid (DNA or RNA). They can only reproduce inside a living cell.
The two main substances produced by cellular respiration are adenosine triphosphate (ATP), which is the cell's primary source of energy, and carbon dioxide (CO2), a waste product that is eliminated from the body.
Glycolysis is the metabolic stage that is part of both fermentation and cellular respiration. It is the initial process that breaks down glucose into pyruvate, producing a small amount of ATP in the process.