Answer:
Answered below
Explanation:
Carbohydrates are biomolecules that contain hydrogen, carbon and oxygen. They are generally structured as a chain of carbons with hydroxyl groups, and ketones or aldehydes. The subtypes include;
Monosaccharides
Disaccharides
Polysaccharides
Monosaccharides are generally represented by the formula CH2On. They are classified based on the number of carbon atoms they have. Example, hexoses have 6 carbon atoms, pentose, 5, diose, 2 etc. They are also classified based on whether they have ketones or aldehydes. Examples of monosaccharides are glucose and fructose.
Disaccharides are formed when two monosaccharides form glycosidic bond through a dehydration reaction. Examples of disaccharides include; maltose, lactose, and sucrose which is made up of glucose and fructose. An oligosaccharide is made up of 2-10 monosaccharides and are often components of glycoproteins or glycolipids.
Polysaccharides, also called complex carbohydrates are long-chain carbohydrates made of repeated monosaccharides linked by glycosidic bonds. Examples are starches and glycogen.
A chimeric individual is one that has two sets of genetic makeup in their body. These individuals develop during the fertilization stage of growth and development. This occurs when two ova are each, separately, fertilized by a sperm. The two zygotes fuse, implant and begin to develop as one blastocyst. As the blastocyst develops and differentiate, some parts of the blastocyte are developed from the genetic material of one of the cell lines while other parts develop from the other cell line. Therefore, the fetus will have particular tissues and organs with different genotype from others.
1- to 4-year-old age group experiences the highest overall injury rate for any age group under the age of 15.
More children die from unintentional accidents each year than from any other cause. The rates of unintentional injuries are generally higher among male teenagers aged 15 to 19 years, youngsters from low-income homes, and people of colour. In remote locations, some injuries also happen more frequently.
Although these demographic risk factors cannot be changed, environmental and behavioural dangers, such as dangerous driving, drinking while intoxicated, swimming pools that are not fenced in, and homes without smoke detectors, can be successfully changed with the right techniques.
The three most frequent unintentional accidents that resulted in fatalities among children aged 0 to 19 in 1996 were drowning, motor vehicle occupant, and pedestrian injuries. Although rates varied, these mechanisms together accounted for more than half of all unintentional injury deaths among children and teenagers.
Answer:
Prokaryotes lack a true nucleus with well defined nuclear membrane and other membrane-bound organelles. Mitochondria are the double membrane bound organelle and hence is absent in prokaryotes. Mesosome is an extension of the cell membrane presence in the cytoplasm as infolding and serves to increases surface area and as a site for cellular respiration in prokaryotes. Histones are positively charged proteins that serve in the packaging of negatively charged eukaryotic DNA but are absent in prokaryotes.
So, the correct answer is option A.(DNA is complexed with histones).
The exocrine glands release secretions through ducts.
