Answer:
Mitochondria
Explanation:
A cell can be defined as the structural, fundamental, biological and functional unit of life. Cells are found in all living organisms because they are the basic unit of life.
In a cell, the "workers" that perform various functions or tasks for the survival of the living organism are referred to as organelles.
All living organisms need energy to function. Animals eat and digest food to obtain the energy available for life activities. Thus, the organelle where energy from nutrients is released is generally referred to as mitochondria.
Animals retrieve energy using mitochondria to do cellular respiration because they typically act like a digestive system by taking in nutrients, breaking them down and obtaining energy rich molecules for cell-life activities.
Basically, mitochondria is one of the organelles found in all living organisms and it is known as the powerhouse. Therefore, mitochondria provides all the energy required in the cell by transforming energy forms through series of chemical reactions; breaking down of glucose into Adenosine Triphosphate (ATP) used for providing energy for cellular activities in the body of living organisms.
<em>Additionally, the type of protein molecules used by living organisms to digest their foods are biological catalysts, enzymes etc. </em>
Answer:
Okay I think the question is already answered
<u>Answer:</u>
<em>Trochlear notch is the primary region of the ulna that forms the hinge joint with the humerus. Trochlear notch is the upper cavity part of ulna that has the purpose of fitting the trochlear part of the humerus</em><em>.</em>
It is the hinge joint in the elbow region that makes the hand flexible to rotate. The <em>notch is a semicircular hollow cavity structure in the human arm to fit </em>in the humerus bone which is the bone above ulna in human arm.
B) One swims freely and the other often lives attached to a hard surface.
