Answer:
An egg mostly has 3 parts being the Shell, the Egg white and the Yolk.
This is almost like the animal cell which has three main parts being the Cell wall, the Cytoplasm and the Nucleus.
Similarities that enable the egg to be a model of animal cell:
- Both cell membrane and egg shell are selectively permeable which means they only allow certain things in and osmosis can occur.
- Cytoplasm in animal cell surrounds the nucleus like the egg white surrounds the yolk.
- The nucleus is more or less in the center of the animal cell much like a yolk is more or less in the center of an egg.
When an egg is left in vinegar for three days, osmosis will occur and the egg shell will probably dissolve. This means that because vinegar has a higher concentration of water than the egg, water molecules will move from the vinegar to the egg across the egg shell leading to the egg increasing in size.
As the egg shell absorbs more vinegar, it will end up dissolving.
<span>It is well known that the centrosome acts as a microtubule organizing center, with its textbook role in forming mitotic spindles in dividing cells. So in many cells, the centrosome with its centrioles is indeed essential to ensure correct cell division, and in these the PCM ensures the distribution of the right number of centrioles to each daughter cell. But there are exceptions – which include somatic cells in fruit flies and some fungi – where no centrioles are needed; and centrosomes in some differentiated cells, including neurons and muscle cells, are inactive.</span>
Answer:
True
Explanation:
True ,the rate and depth of breathing influences the blood levels of oxygen (O2), carbon dioxide (CO2), hydrogen ions (H+). Slow and deep breathing increase the blood oxygen level and cellular breathing is great,whereas the CO2 level reduces in the blood and it impedes lactic acid formation. Moreover, influences the venous return of blood and lymph due to changes in compression within the thoracic cavity that occur during breathing.
Being versatile means that it can be used in many different ways, or has many different purposes.
Hope this helps and have a nice day! :)