The answer is to this question is A
DNA is composed of nucleotides, which are composed of three parts:
1. A five carbon carbohydrate (pentose)
Pentose is classified as a monosaccharide (simple carbohydrate), and its molecular formula is represented by 
. They are water soluble molecules with sweet taste. Monosaccharides may have from three carbon atoms (trioses) to six (hexoses). In DNA is present pentose (5 carbon atoms)
2. A nitrogenous base
Nitrogenous bases are ring-shaped compounds that contain nitrogen in their molecular structure. They are classified into two groups: purines and pyrimidines
The purine bases are adenine (A) and guanine (G). They are larger and contain more than one ring in their structure,.
The pyrimidines, cytosine (C), uracil (U) and thymine (T), are smaller and composed of a single ring.
3. One or more phosphate groups
A phosphate consists of a trivalent anion that contains one phosphorus atom and four oxygen atoms. Its molecular formula is expressed by 
.
Answer:
Muscle tissue is categorized into three different types: skeletal, cardiac, and smooth. Each type of muscle tissue in the human body has a unique structure and a specific function. Skeletal muscle moves bones and other structures. The heart muscle contracts the heart to pump blood.
<span>#1) What are saber teeth for these organisms?
Answer: After reading the statements presented above you can conclude that the saber teeth are Analogous structures for these organisms. The reason being that they can be considered as similar features. This usually happens when different organisms live in similar environments, they evolve in a similar way.
<span>I hope it helps, Regards.</span></span>
The question lacks the options. I found the answer on the internet.
Following are the instructions that the nurse should give to the patient suffering with pneumonia followed by intermittent episodes of cough and thick yellow sputum:
1. Drink a lot warm water to keep hydrated.
2. Do deep breathing exercises once in every two hours. This will increase the oxygen uptake by the lungs.
3. DO not avoid walking. Walk as much as possible for good mobility and functioning of the body.
