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aev [14]
3 years ago
14

Which of the following statements are true with regard to Mycobacterium?

Biology
1 answer:
Sergeu [11.5K]3 years ago
4 0

Answer:

2, 4 and 5

Explanation:

The wall of Mycobacterium tuberculosis (a typical Mycobacterium) has a high lipid content, hence it does not respond to gram staining. Instead, acid-fast staining or Ziehl-Neelsen stain is used in its identification.

The cell wall of Mycobacterium species is thicker in comparison with other bacteria in the sense that it is hydrophobic, waxy and contains a unique acidic wax, known as mycolic acid.

Mycobacterium tuberculosis is an obligate aerobe, which means it is strictly dependent on oxygen. It thrives (multiplies) best under this condition.

Some species of Mycobacterium ate saprophytic i.e. they live on dead organic matter while some are obligate parasites that live on tissues e.g M.tubercosis and M.leprae causes tuberculosis and leprosy in humans respectively.

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So, option A is your answer.

Hope this helps!
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What is the name of this process of specialization that forms different types of cells?
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A car starts moving at 85 m/s for 10 seconds. Then the car decelerates for 5 seconds to 30 m/s. After 10 more seconds, the car i
evablogger [386]

Answer:

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What are the two ways the hypothalamus sends messages to the pituitary gland?
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4 0
3 years ago
The Meselson and Stahl experiment starts with E. coli containing 15N/15N labeled DNA grown in 14N media. Which result did Mesels
cricket20 [7]

Answer:

No 15N/15N labeled DNA was observed in second generation

Explanation:

Meselson and Stahl were doing an experiment to find out the semi-conservative mode of replication of DNA. The first cultured bacteria in 15N medium which was containing a heavy isotope of nitrogen. The DNA synthesized here had more density. After that they transferred the bacteria to the 14N containing medium. When bacteria reproduced and new strands of DNA were synthesized, they observed the following -

  • The first generation had hybrid DNA with 15N/14N strands
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  • There was no 15N/15N DNA observed.

In this way they proved that one strand of DNA is kept conserved during the replication.

4 0
3 years ago
Read 2 more answers
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