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spin [16.1K]
3 years ago
10

Explain why the structure of DNA is described as a double helix

Biology
1 answer:
Hatshy [7]3 years ago
8 0

Answer:

The double helix is the description of the structure of a DNA molecule. A DNA molecule consists of two strands that wind around each other like a spiral staircase. Each chain has a backbone in which a sugar (deoxyribose) and a phosphate group alternate.

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Arada [10]

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2 years ago
To which type of medication did the TB bacteria develop resistance​
aleksley [76]

Answer:

Isoniazid (INH) and rifampicin (RMP).

This is called MDR TB.

MDR TB is a particular type of drug resistant TB. It means that the TB bacteria that a person is infected with are resistant to two of the most important TB drugs, isoniazid (INH) and rifampicin (RMP). If bacteria are resistant to certain TB drugs this means that the drugs don’t work.

3 0
2 years ago
How can you tell that the green sum on a pond is a plant
saw5 [17]
One reason is because of its given color. Typically, Algae or moss grows in saturated areas. The reason it is been is because doc its pigment, or chlorophyll found in its anatomy.
8 0
3 years ago
What type of cell would have a nucleus but no cell wall
nata0808 [166]
An animal cell has a nucleus but no cell wall.
3 0
3 years ago
R-related species have a short life span and an early reproduction cycle? t or f
GREYUIT [131]

It is true that r-related species have a short life span and an early reproduction cycle. R-related species also known as  r-strategist have a short and simple life span. Due to their simple life span, their nutrient exchange rate with the environment is rapid. Unlike K-selected species, they have the ability to reproduce at a young age. They reproduce a large number of off-springs, but many of their off-springs tend to die before attainment of their reproductive age.

5 0
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