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Bas_tet [7]
3 years ago
6

The DRT for a particular bacterial species at 60°C is 30 minutes. How long would it take at this temperature to remove 99.9% of

this bacterial population?
Biology
1 answer:
zimovet [89]3 years ago
7 0

Answer:

It would take 90 minutes at this temperature to remove 99.9% of this bacterial population.

Explanation:

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Photosynthesis

ExplanatioIn the process of photosynthesis plant take up carbon dioxide and releas oxygen

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Where does the majority of stem growth in a plant occur?
Xelga [282]
The answer for the question is the Apical meristem. 
Growth in plants occurs as the stems and roots lengthen. Some plants, especially those that are woody, also increase in thickness during their life span. The increase in length of the shoot and the root is referred to as primary growth. It is the result of cell division in the shoot apical meristem. 
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3 years ago
Chemical reactions change subtances into different substances when the atoms
maks197457 [2]

Answer:

I am not sure but I think the answer is of first one.

4 0
3 years ago
Need help with this evolution chart some I've filled in yet I'm not sure if they are correct.Plz help anybody
Svetllana [295]

Answer:

This is correct. The remaining portion:

Sympatric species that form interrelationships undergo coevolution.

Allopatric species in different environments can undergo convergent evolution.

Allopatric species in small populations and under intense environmental conditions can undergo genetic drift.

Explanation:

On the basis of geographical distance, speciation is of two major types:

  1. Sympatric
  2. Allopatric

Sympatric Speciation:

Sympatric speciation is the formation of new species with no gergraphical separation from the ancestor. The new and parent species both exist in the same environment but do not interbreed due to mechanisms of reproductive isolation. These involves both prezygotic and post zygotic barriers to reproduction such as timing of mating, sensitivity to pheromones, choice of mating sites or infertility and mismatched gametes. Species formed through sympatric speciation can form interrelationships and undergo coevolution i.e. the evolution of ones species is dependent on the other.  

Allopatric Speciation:

It involves the geographical separation of the parent and new species. These species could be geographically separated by a river, mountain range or land mass.

Although, allopatric species evolve independently, they may develop similar characteristics that serve different functions. Allopatric species in radically different environments undergo convergent evolution i.e. species evolve similar characteristics without any ancestral homology.

Allopatric species that reside in small populations and are under harsh environmental pressures undergo a rapid genetic revolution i.e. genetic drift. This includes the Founder's and bottleneck effect that involve the continuation of a species from very few individuals after a drastic, sudden environmental change.

4 0
3 years ago
A cell membrane is like a wall.
Thepotemich [5.8K]

False, a cell wall is made from a denser material and is used to protect the cell membrane.

7 0
2 years ago
Read 2 more answers
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