~Hello there! ^_^
Your question: The four types of nucleotides that make up DNA are..?
Your answer: The four types of nucleotides that make up DNA are:
1) Thymine
2) Guanine
3) Adenine
4) Cytosine
Hope this helps! :D
I believe it is the hard membrane covering the bones. Please make brainliest
<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>
1. Respiratory brings oxygen and nutrients to the cells, while the circulatory
moves gases in and out of the blood. These work together because they have to exchange carbon dioxide and oxygen with each other.
2. The main parts and functions of the respiratory system are, the nose, pharynx, larynx, trachea, bronchi, and the lungs. As I said in the first answer, The respiratory brings oxygen and nutrients to the cells.
3. The main parts and functions of the circulatory system is the heart, lungs, arteries, veins, coronary, and portal vessels. The circulatory system moves gases in and out of the blood.
4. There are two main parts in your lungs, the pharynx, and the larynx. So, when you swallow food, the epiglottes blocks the entrance to these two main parts. Simply..if you could breath while doing this..I think you could die.
5. They are connected to capillaries that distribute blood to and from all the cells.
