Answer:
The heritability of type 1 diabetes is likely high, indicating that genetics plays a larger role in the development of type 1 diabetes than the environment.
Explanation:
Identical twins are formed when a single zygote separates into two embryos after the process of fertilization. Hence, these twins arise from the same egg and sperm.
Fraternal twins arise when two different sperms fertilize two eggs at the same time.
Hence, we can say that the genotype of the identical twins is similar.
The results from concordance data prove that genetics play a higher role in type 1 diabetes.
Lipids contain more energy that carbohydrates because they contain more carbon to hydrogen bonds to release energy when broken.
<span>A macromolecule is a large molecule. There are four groups of macromolecules: carbohydrates, proteins, nucleic acids and lipids. Lipids consist of glycerol and fatty acids and are constructed from fats, oils, waxes, phospholipids and steroids. A lipid's function is to insulate the body and provide warmth in cold conditions. It can be concluded that a person with very little body fat gets very cold easily and a person with a lot of body fat gets very warm very quickly.
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Answer;
B. improved ecosystem health
Explanation;
-Surface mining is a method of extracting minerals near the surface of the Earth. The three most common types of surface mining are open-pit mining, strip mining, and quarrying.
-The environmental impact of mining includes erosion, formation of sinkholes, loss of biodiversity, and contamination of soil, groundwater, and surface water by chemicals from mining processes.The environmental effects of surface mining include;
- Habitat destruction
- Soil erosion
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Air pollution from dust particulates
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Pollution (especially from sediments)
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All surface mining techniques negatively affect the environment, though some methods are more damaging than others.
Answer:
Gamete C
Explanation:
During the formation of gametes, the DNA is first duplicated, and 2 separate cell divisions take place to make a haploid cell.
In the first division, the homologous chromosomes are separated
Before the first cell division, the homologous chromosomes align in the centre. In this cell, the light green and dark green chromosomes align, as do the light purple and dark purple chromosomes. These are then separated into 2 different cells, 1 gets either the light or dark green chromosome and either the light purple and dark purple chromosome. The other cell also gets either light green or dark green and light purple or dark purple.
Then, a second division takes place that separates the sister chromatids to produce what we see in the gametes A, B, C, and D.
The only one that is not possible in a healthy cell is C, because it has not received any of the green chromosomes and instead has two homologous purples.
Answer:
C) 128
Explanation:
In binary fission each bacterial cell will divide into two parts.
1. Since the bacteria divides divides after every 20 min , We have to find the number of division in two hours two hour(2x60=120 min) which will be;
120÷20=6
It will undergo 6 divisions.
2. To calculate the number of bacteria at the end of 2 hours
Bacteria in the beginning x 2∧ Number of division
1× 2∧6= 128 Bacteria
