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Ainat [17]
2 years ago
10

Amoebas are unicellular organisms, while human beings are multi-cellular and the most intelligent of organisms. However, both ar

e classified as eukaryotes. How will you justify this reasoning?
Biology
1 answer:
snow_tiger [21]2 years ago
8 0
That is because being prokaryotic or eukaryotic doesn't depend on the size of the organism, but rather on the cellular structure. Both are eukaryotic because they have clearly defined nuclei and functioning organelles that are differentiated, unlike prokaryotic organisms.
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Bathing, cleaning, washing clothes, watering plants, washing vehicles
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2 years ago
Antibiotic resistance evolved in a population of Mycobacterium tuberculosis, the bacterium that causes tuberculosis. Select the
Natasha2012 [34]

Answer:

Antibiotic resistance can evolved in bacterial population in the following ways:

Explanation:

  • In response to constant exposure to antibiotics some members of a bacterial population develop some beneficial mutations in some essential genes that gives them survival advantage in terms of food and space over the sensitive bacterial strains and hence they are capable of out-competing the sensitive bacteria.
  • This happens due to the process of Natural Selection.
  • These genes are called antibiotic resistance genes and bacteria usually carry them on plasmids in form of cassettes where genes resistant to multiple drugs are incorporated. These plasmids are called the MDR or Multi-Drug Resistance Plasmids.
  • These resistant plasmids can be easily transferred among bacterial populations by conjugation, transformation or transduction or direct plasmid transfer.
  • The resistant genes encode for proteins that render the drug ineffective by promoting their efflux from the cells, preventing their entry into the cell, chemically modifying them such that they become non-functional or altering the target site of the drug.

7 0
3 years ago
(Fill in the blank)
prisoha [69]

Answer:

Capsule

Explanation:

In many bacterial species, an extracellular layer composed of a polysaccharide especially a monosaccharide is produced around the cell wall of the bacteria. This extracellular layer is known as the slime layer or the capsule.

The capsule in bacteria serves many purposes like it protects the bacteria from the destruction by the white blood cell in the host, it enables the bacteria to adhere to the substrates and protect it.

In the plant group called the bryophytes also a capsule structure is present which grows in the sporophytic phase and encloses the spores, therefore, the capsule is considered the sporangium of the bryophytes.

Thus, the capsule is correct.

7 0
3 years ago
Which of the following is an example of an environmental variation?
Lera25 [3.4K]
I believe the example of an environmental variation in the above question is, A. Marge dyes her hair blue. Variation represents any difference between cells, individual organisms, or groups of organisms of any species caused by either genetic differences or by the effect of environmental factors. Environmental variation is the ability of an organism to alter its phenotype depending on environmental conditions.
6 0
3 years ago
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What part of the human body is most similar in function to the spongy mesophyll layer in a leaf?
Whitepunk [10]
The part of the Human body that is most similar in function to the spongy mesophyll layer in a leaf is A) Alveoli in the lungs.
7 0
3 years ago
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