Answer:
A mass of cells that have lost all restraint in division and are piled on top of one another is called a <u>Tumor.</u>
The key to mitosis occurring is the presence of a nucleus.
Answer:
The heart is made up of heart muscle known as Cardiac muscle, or myocardium This contracts almost 70 times a minute and pumps about 5 liters of blood each minute.
Explanation:
Answer:
Birds have a significant number of reduced muscles to help them reduce their weight. The most-developed muscles in birds are the flight muscles that they need to fly. The bones are mostly fused, reducing the need for muscles to hold the bones together. The skulls of birds are very thin and the beaks are very light.
<h3>
<em>PLEASE</em><em> </em><em>MARK</em><em> </em><em>AS</em><em> </em><em>BRAINLIEST</em><em> </em><em>ANSWER</em><em> </em></h3>
The answer is; permeability
This is the property of a material to allow fluids to pass through them without being changed physically or chemically. The membrane of the cell is referred to as semi-permeable because it allows only particular fluid through it depending on the pore size of the cell membrane. Particles that are larger in size can only be taken up by active transport such as by endocytosis.