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madam [21]
3 years ago
14

What type of bond keeps each individual DNA strand together?

Biology
1 answer:
bekas [8.4K]3 years ago
7 0
The answer is Hydrogen bonds
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The hypothesis, which says lightning struck the Earth causing tiny organic molecules to join and form living organisms, is histo
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The answer is;  A


This model hypothesizes how life started during the early conditions of the earth which were hot and filled with greenhouse gases in its atmosphere about 4 billion years ago. It is explained by the theory of spontaneous generation where organic molecules were created from inorganic molecules spurred from energy from lightning. These organic molecules filled the water bodies and chemically arranged themselves, over time, into primordial life.


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3. What is peptidoglycan?
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Answer:

A combination of polypeptides and modified sugars that enclose the entire eubacteria.

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A component of bacterial cell walls called peptidoglycan (PGN) promotes innate immune responses. Peptidoglycan, a polymer made of sugars and amino acids, creates the cell wall of the majority of bacteria by producing a layer that resembles a mesh outside the plasma membrane. N-acetylglucosamine and N-acetylmuramic acid residues are alternated in the sugar component. forms a saccules in the cell wall of most bacteria that resembles a bag. It controls bacterial cell shape and is crucial for osmotic stability. A heteropolymer made up of glycan strands carrying small peptides is known as a peptidoglycan.

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Which of the following is a disadvantage of wind as an energy source?
lesya692 [45]

Explanation:

Wind energy is one of the sources of renewable sources of energy that is environmentally friendly.

It uses wind power to generate other forms of energy mostly electricity.

Some of the drawbacks are:

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  • The quantity fluctuates from time to time. Since wind is an element of weather, it is not always in regular supply as desired.
  • The cost of constructing wind turbines can be very high a times.

Learn more:

Non-renewable sources of energy brainly.com/question/3386515

#learnwithBrainly

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3 years ago
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