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JulsSmile [24]
3 years ago
14

Which are characteristics of eukaryotic organisms

Biology
2 answers:
Katarina [22]3 years ago
4 0

Answer:

Eukaryotic cells are very diverse in shape, form and function. Some internal and external features, however, are common to all. These include a plasma (cell) membrane, a nucleus, mitochondria, internal membrane bound organelles and a cytoskeleton.

Explanation:

Stella [2.4K]3 years ago
4 0

Answer:

Eukaryotic cells have a membrane-bound nucleus. numerous membrane-bound organelles (including the endoplasmic reticulum, Golgi apparatus, chloroplasts, and mitochondria) several rod-shaped chromosomes. Eukaryotic cells are very diverse in shape, form, and function. Some internal and external features, however, are common to all. These include a plasma (cell) membrane, a nucleus, mitochondria, internal membrane-bound organelles, and a cytoskeleton.

Explanation:

I hope I've helped, if you need further explanation, please comment below.  

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Suppose that the population of a colony of bacteria is growing exponentially. At the start of an experiment, there are 4000 bact
kogti [31]

Answer:

It takes 10.3 hours to reach 8200 bacteria

Explanation:

Under laboratory-controlled conditions, the growth of bacteria is exponential, in mathematical terms is a geometric progression base 2, that is, one bacteria reproduce and converts in two ( one generation), then the two bacteria reproduces and now we have 4 bacteria (second generation), etc. The time that takes in doubling the growth is called generation time.  We can calculate with the next formula.

Generation time (g)= time that hass passed (t)  / number of generations (n).

<h2>                                     g= t/n </h2>

We can calculate the number of generations by the next formula:

Number of generations (n)= logarithm of number final of cells (log N) – logarithm of the number of initial cells ( log No) divided in the logarithm of two ( log 2)

<h2>                        n= 3.3 (log N – log Nо)  </h2><h2 />

Now we can combine the two formulas:

<h2>            g= t / 3.3( log N – log Nо )  </h2>

First, we need to know the generation time of that bacteria.

Inicial number (N): 4000

Final number (Nо): 4600

Time passed (t): 2 hours

Generation time (g) : ?

g= 2 hours / 3.3 ( log 4600 – log 4000)

g= 2 hours / 3.3 ( 3.66 – 3.6 )  

g= 2 hours / 3.3 (0.06)

g= 2 hous/0.198 generations

g= 10.1 hours of generation time

The bacteria takes 10.1 hours in doubling the time. How much time does it need to reach 8200 bacteria?

We know:

Inicial number (N): 4000

Final number (Nо): 8200

Times passed (t) : ?

Generation time (g): 10.1 hours

With the same formula,  

g= t / 3.3 ( log N – log Nо)

10.1 = t / 3.3 ( log 8200 – log 4000)

10.1 = t / 3.3 ( 3.91 – 3.6 )

10.1 = t / 3.3 (0.31)

10.1 = t / 1.02 generations

As we want to know the time,  the 1.02 generation pass on the other side multiplaying.

t= (1.02) 10.1  

t= 10.3 hours  

3 0
3 years ago
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