Difference between gram positive and gram negative bacteria

1 answer:

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Danish scientist Hans Christian Gram devised a method to differentiate two types of bacteria based on the structural differences in their cell walls. In his test, bacteria that retain the crystal violet dye do so because of a thick layer of peptidoglycan and are called Gram-positive bacteria. In contrast, Gram-negative bacteria do not retain the violet dye and are colored red or pink. Compared with Gram-positive bacteria, Gram-negative bacteria are more resistant against antibodies because of their impenetrable cell wall. These bacteria have a wide variety of applications ranging from medical treatment to industrial use and Swiss cheese production.

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Maria and her brother like to go fishing at the lake on Saturdays. They wondered if fish were more likely to bite at one time of

kobusy [5.1K]

Answer:

No. They will need to repeat their experiment several times, since the weather and times were different both days.

Explanation:

When a scientific experiment is conducted, one independent variable shall be changed in each experiment at a time so that the results of the experiment are authentic and we can easily determine which independent variable caused a change in the dependent variable.

If more than one independent variable is changed in the same experiment, then it will be difficult to interpret that which variable caused the change.

Similarly, Maria and her brother need to repeat their experiment several times with just changing one variable at a time.

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Answer:

DNA restriction enzymes cut the DNA molecule, while DNA ligases join the resulting DNA fragments

Explanation:

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2 years ago

What animal phylum do leeches belong in?

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Answer:

What animal phylum do leeches belong in?

Explanation:

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What is lunar dust made of??? please help me out here!!

rewona [7]

Answer: Lunar dust is made up of silicates

Explanation: 42% oxygen

21% silicon

13% iron

8% calcium

7% aluminium

6% magnesium