I had to look for the missing options of this question and here is my answer:
Osteocyte is the term that describes the cells of the bone. These cells are formed in the mesenchyme. Once the bone matures, the processes then take place inside the Lacunae and the Canaliculi, respectively. Therefore, we can say that the structure that allows the provision of nutrients and removal of wastes from osteocytes would be the canaliculi.
Answer:
A nucleotide is one of the structural components, or building blocks, of DNA and RNA. A nucleotide consists of a base (one of four chemicals: adenine, thymine, guanine, and cytosine) plus a molecule of sugar and one of phosphoric acid.
The choices can be found elsewhere and as follows:
1.are soluble and can easily pass through cell membranes
<span>2.contain long chains of amino acids and fatty acids </span>
<span>3.contain atoms of carbon, hydrogen, oxygen and nitrogen </span>
<span>4.are a direct result of dehydration synthesis
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I believe the correct answer is option 1. When most proteins, fats, and carbohydrates are digested completely, they are converted to end products that are soluble and can easily pass through cell membranes. So as to distribute the nutrients needed in different parts of the body.
The heart receives its blood supply from the coronary arteries. The two main coronary arteries branch off the trunk of aorta close to the aortic va;ve. Coronary arteries receives blood from aorta during diastole when ventricles are resting. Right coronary artery extends to the right and perfuses the right atrium and right ventricle. The SA node is perfused by RCA in approximately 55% and AV node supplied by RCA in 90% of populatio. The remaining percent is supplied by left circumflex.
