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2 years ago

Compare the similarities and differences between the three domains of life

1 answer:

8 0

Similarities and Differences
There are many similarities and differences between the three domains. Bacteria and Archaea differ in how they gain energy. Bacteria gain energy either by being phototrophs, lithotrophs or organotrophs. One similarity between domain Archaea and domain Bacteria is that they both contain only prokaryotes while domain Eukarya only contains eukaryotes. Domain Archaea is the only domain that is sensitive to antibiotics. Another similarity between domain Bacteria and domain Eukarya is that Methionine is the first amino acid seen during protein synthesis while in domain Archaea, the first amino acid is Formylmethionine. The last major similarity between domain Archaea and domain Bacteria is that they do not contain any organelles while domain Eukarya does. A difference between all three domains is what their cell walls contain. A cell wall in domain Archaea has peptidoglycan. The organisms that have a cell wall in domain Eukarya, will have a cell wall made up of polysaccharides.

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Which of the following is a disadvantage of online surveys? They result in high response bias They lead to higher cost per compl

Sati [7]

"They result in high non-response bias" is a disadvantage of online surveys.

Option: A

Explanation:

To several market analysts online surveys have become the default tool. It is fairly so. The ease of accessibility and the use of online surveys also in turn creates issues in itself. The advantages and disadvantages of online surveys are listed below:

Advantages:

Accessible to most target audiences.
Generally no cost-based geographic restrictions.
Motivate flexible framework with countless question forms and formats.

Disadvantages:

Poorly chosen networks of dissemination can contribute to skewed data, low success rates and a host of other possible problems.
Difficulty targeting other groups of respondents, like those without internet access or samples of non-customers in niche sectors.

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2 years ago

Now that you have identified the components of DNA, can you describe how these components bind together to form a DNA molecule?

Leni [432]

Answer:

1. Phosphodiester bond.

2. Hydrogen

3. 2 hydrogen

4. 3 hydrogen

Explanation:

1. Deoxyribonucleotides bind together to form polynucleotides. This bond occurs between the phosphate group of one nucleotide and the C- 5' position of a 3 of another nucleotide. The type of bond formed in this interaction is called a PHOSPHODIESTER bond.

2. The nitrogenous bases of each nucleotide project the double helix. They form complementary base pairs through the formation of HYDROGEN bonds with bases on the opposite DNA strand.

3. Adenine complementarily binds with thymine and forms TWO HYDROGEN bonds bonds.

4. Guanine complementarily binds with cytosine and forms THREE HYDROGENbonds bonds.

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3 years ago

Identify the type of mutation shown in the diagram, with respect to chromosome 20

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I think is Insertion since that other part of the chromosome( the gray) was added to the current chromosome( the yellow).

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2 years ago