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3 years ago

Hat is the difference between DNA and RNA?

2 answers:

7 0

DNA is a long polymer with deoxyriboses and phosphate backbone. Having four differentnitrogenous bases: adenine, guanine, cytosine and thymine.RNA is a polymer with a ribose and phosphate backbone. Fourdifferent nitrogenous bases: adenine, guanine, cytosine, and uracil. maybe this helps

QveST [7]3 years ago

7 0

The difference between DNA && RNA is 'DNA uses deoxyribose and RNA uses ribos '

So, your answer would have to be. B. DNA uses deoxyribose and RNA use ribose"

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D bucolic acid is history and rain stomach

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3 years ago

Cells in a cat's pancreas produce insulin, but the cells in its heart do not. Which statement best explains this?

Genrish500 [490]

Answer:

The correct answer is: A. The genes for insulin production are not activated in heart cells.

Explanation:

DNA is present in practically every cell in an organism, but not every cell performs the same tasks as the rest. This happens because genes in the DNA code for different types of proteins, from enzymes to transporters, that impact greatly on the function of a cell; and these genes can be activated or inactivated which will directly correlate to the type of cell and the function that it has.

If the cells in the pancreas can produce insulin but the cells in the heart can't it's because the cells in the heart have the genes for insulin production inactivated.

The amount of mitochondria and ribosomes does not directly affect the production of insulin.

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4 years ago

Pseudomonas syringae strain Lz4W is a Gram-negative, Antarctic soil species that grows at 0ÂºC. This strain has been used to det

marin [14]

Answer:

A. The RNA polymerase subunits of the P.syringae strain probably have extra flexibility so that they can move more freely in colder temperatures.

Explanation:

Because there is no difference in the amount of the RNA polymerases but rather their activity, the difference lies in their structure and not their sequence. Hence the answer can't be (B) or (D). Adaptations are made to broaden the conditions of survival. Hence E. coli would not limit it's survival by limiting its growth to warmer temperatures. Hence the answer is (A) the RNA polymerase subunits of the P. syringae strain probably have extra flexibility so that they can move more freely in colder temperatures.

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4 years ago

Read 2 more answers

Un científico observa las células de un humano y la de un perro, llegando a la conclusión de cómo son las células que las consti

GrogVix [38]

Answer:

c trabajan independientemente sin coordinacion entre ellas

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3 years ago

Which of these structures is found in the stomach but nowhere else in the alimentary canal?a. a circular muscle layerb. mucus-fo

Arada [10]

Answer:

d. an onblique muscle layer

Explanation:

The alimentary canal has four main layers:

Mucosa (innermost layer which surrounds the lumen), submucosa (connective tissue with blood vessels, lymphatics, and nerves), muscular layer, serosa ( outermost layer of connective tissue).

Muscular layer is subdivided into:

• the inner- arranged in circular rings, prevents food from travelling backward

• outer layer- arranged longitudinally, shortens the tract.

The stomach has an extra layer called inner oblique muscular layer (churning function).

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3 years ago