Answer:
The signal transduction pathway has at least one step in which the signal is transmitted by the activation of a protein via phosphorylation.
Explanation:
The definition of an ecological relationship is the relationship between organisms in an ecosystem, so you can find them in almost any ecosystem.
Respiratory system is refers to as the organs which are involved in breathing such as nose, throat, larynx, trachea, bronchi, and lungs. It is also known as respiratory tract.
The circulatory system is refer to as which contains the heart and the blood vessels and blood moves throughout the body in vessels. This circulatory system helps tissues to get enough oxygen and nutrients, and it helps them get rid of waste products.
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What is breathing?</h3>
When person inhale (breathe in), air enters in the lungs, and oxygen from atmosphere moves to body blood. At the same time, carbon dioxide, a waste gas, moves from blood to the lungs and is exhaled (breathed out).
Breathing process is known as gas exchange which is is essential to life.
For more information regarding breathing, visit:
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The answer would be:
F - False.
The chemical digestion of proteins actually starts in the stomach. Proteins are first digested by the enzyme pepsin, which is secreted by the stomach, along with hydrochloric acid (HCL). It is then digested further in the small intestine, specifically in the duodenum, with the help of the pancreas. The pancreas releases the enzymes chymotrypsin and trypsin.
