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Luba_88 [7]
3 years ago
14

Brainliest to right answer!!

Biology
1 answer:
Lilit [14]3 years ago
8 0

Answer:Sun

Explanation:

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The bacteria have an initial concentration of 1000 cells/cm3 . Each cell divides once every 30 minutes. Calculate how long it wi
Levart [38]

It will take <u>120 minutes</u> for the concentration to become > 15000 cells/cm³

<u>Given data:</u>

Initial concentration ( density ) = 1000 cells / cm³

Target/final concentration = > 15,000 cells /cm³

<h3 /><h3>Calculating the concentration every 30 minutes </h3><h3 />

<em>note</em><em> : Given that each cell divides every 30 minutes </em>

  • <u>After the first 30 minutes </u>

Concentration = 2000 cells / cm³

  • <u>After 60 minutes </u>

concentration = 4000 cells / cm³

  • <u>After 90 minutes </u>

concentration = 8000 cells / cm³

  • <u>After 120 minutes </u>

concentration = 16000 cells / cm³

Therefore after 120 minutes the concentration of the cells will be greater than 15000 cells/cm³ ( i.e. 16000 cells/cm³ )

Learn more about concentration : brainly.com/question/17206790

4 0
2 years ago
The number of cells in an average-sized adult human is on the order of 10^14 cells. Use this information, and the estimate that
KengaRu [80]
IF:
Number of cells: C = 10^{14}
DNA lenght: D = 2m = 12.42 * 10^{-4} mi
Distance from Earth to Sun: ES=93000000 mi = 9.3* 10^{7}mi

Then:
a) <span>Over how many miles would the total DNA from the average human stretch?
The answer is product of multiplication of the number of cells (C) and the DNA length (D):
Total DNA: </span>T = C*D
              ⇒ T = 10^{14}*12.42* 10^{-4} mi
              ⇒ T = 12.42* 10^{14-4} mi
              ⇒ T = 12.42* 10^{10} mi
The total DNA from the average human will stretch 12.42* 10^{10} mi

b) How many times would the total DNA from the average human stretch from Earth to the Sun and back?
The answer is concluded from the ratio of the total DNA length (T) and the <em>twice </em>(because of stretch to the Sun and back, thus, <em>two directions</em>) of distance from <span>Earth to the Sun (ES) and :
Ratio: </span>R= \frac{T}{2*ES}
      ⇒ R = \frac{12.42* 10^{10}mi }{2*(9.3* 10^{7}mi)}
      ⇒ R = \frac{12.42* 10^{10}}{18.6*10^{7}}
      ⇒ R = 0.6677* 10^{10-7}
<span>      ⇒ R = 0.6677* 10^{3}
</span><span>      ⇒ [tex]R = 667.7
</span>Thus, 667,7 times will the <span>total DNA from the average human stretch from Earth to the Sun and back.</span>
6 0
3 years ago
Help? You are studying an outcrop where the lower layer is limestone and the layer directly on top of the limestone is sandstone
ELEN [110]

Answer:

Due to mixing of particles present in the upper layer of limestone with sandstone during deposition.

Explanation:

The parent layer was limestone layer which is older than sandstone layer. This sandstone layer spreads on the limestone layer because of wind. The wind moves these sandstone from other region and their deposition occurs on the limestone layer. During deposition of sandstone, some particles of limestone which are present at the surface mixes with the sandstone so that's why in sandstone layer, small and weathered pieces of limestone are present.

7 0
3 years ago
Which structure best shows that eukaryotes have functions different from prokaryotes?
natulia [17]
<span>The nucleus best shows that eukaryotes and prokaryotes have different functions.</span>
7 0
3 years ago
What are 2 nutrients that cause eutrophication
agasfer [191]
Nitrogen and phosphorus?
4 0
3 years ago
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