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sineoko [7]
3 years ago
9

Most antibiotics work best on actively growing bacteria. At which phase are bacteria most susceptible to the actions of these an

tibacterial drugs?
Biology
1 answer:
Vladimir [108]3 years ago
6 0

Answer:

The correct answer is- log phase

Explanation:

Most antibiotics work on actively growing bacteria and the log phase is the phase when bacteria is metabolically most active and actively divide. Bacteria is most susceptible to antibiotics in log phase because the target of most antibiotic is cell wall,  protein, DNA and in log phase new proteins, DNA and cell wall is actively synthesized in large amount.

Therefore antibiotics get their target easily during the log phase of bacteria which allows the bacteria to become most sensitive towards antibiotics in this phase. Therefore the right answer is log phase.

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Is mitosis involved with two sets of nuclear divisions
Naya [18.7K]

Answer:

NO. Mitosis involves one set of nuclear division and results in two nuclei that are exactly the same as the original. On the other hand, meiosis involves two sets of nuclear divisions.

Explanation:

Mitosis is a type of cell division normally occurring at the sites of growth and development of new tissues and also at sites of repair. It also occurs during asexual reproduction of organisms. Each mitotic cell division is a process that follows distinct phases.

Each mitotic division results in the formation of two daughter cells which are genetically identical to the parent cell, that is they have the same number and type of chromosomes as the parent cell.

During telophase, a nucleolus develops in the nucleus of each daughter cell. The cytoplasm divides in the process called cytokinesis. An invagination develops and finally splits the cell into two daughter cell each with its own nucleus and cytoplasm.

5 0
3 years ago
A land developer and several ecologists are discussing how a parcel of private land should be developed with housing while savin
FromTheMoon [43]

Options for the question have not been provided. They are as follows:

A) The single intact parcel would have a smaller amount of edge than the 20 separate parcels.

B) The isolated hectare plots increase the ability of individuals to disperse from one habitat to another.

C) The separate 1-hectare plots are less vulnerable to edge effects.

D) The large plot will create more inbreeding in many species.

Answer:

A) The single intact parcel would have a smaller amount of edge than the 20 separate parcels.

Explanation:

In the given case, 20 hectares of land has been allocated to natural habitat. This means that natural flora and fauna will flourish here without any human interference. In this situation it is better to have an intact 20 hectares area at one side of the land, rather than having 20 separately spread out 1 hectare areas. This is because having one large piece of land at one side will reduce the edge effect.

Edges occur where two different habitats meet. While edges can be beneficial when it comes to natural habitats because the boundary habitat increases overall biodiversity, it can be detrimental when the edges are due to human settlements. It will be difficult to avoid human interference as the natural habitats are scattered among human settlements. Each individual plot will also get less area due to which it will be difficult for all the species to accommodate comfortably. Many animals can venture out in search of food which can be dangerous to both animals and humans. It is better to have a big separate land at one corner so that everyone can survive peacefully.

3 0
3 years ago
How do leaves provide food for a plant?​
Rudik [331]

Answer:Plants make food in their leaves. The leaves contain a pigment called chlorophyll, which colors the leaves green. Chlorophyll can make food the plant can use from carbon dioxide, water, nutrients, and energy from sunlight. This process is called photosynthesis.

Explanation:

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3 years ago
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How grassland can become like a desert by the action of livestock like cows.
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This can be caused by over grazing from the livestock or even wild animals such as rabbits. Rabbits are known to breed very quickly and can destroy an ecosystem with their sheer numbers.
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3 years ago
Who was the first person to observe dead cells
katovenus [111]
Anton van Leeuwenhoek :-))
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3 years ago
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