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tester [92]
3 years ago
9

One of the reasons bacteria can be so deadly is because they multiply very quickly. E. coli has a doubling time of around 15 min

utes. This means that if 100 bacteria are left alone for 2 hours, they will multiply to become:
12,400 Bacteria
18,400 Bacteria
25,600 Bacteria
36,600 Bacteria
Biology
1 answer:
Travka [436]3 years ago
6 0

Answer:

The correct answer is - 25600 bacteria.

Explanation:

Bacteria can divide and produce double their population very quickly. As mentioned in the question bacteria multiply every 15 minutes to their double number. Finding the number of bacteria after 2 hours is simple mathematics. Two hours means 120 minutes and dividing it to 15. The result will be 8 which mean the bacteria double their colony 8 time so,

100×2 to the power 8 = 100 (initial number of bacteria)×2×2×2×2×2×2×2×2= 25600

Thus, the correct answer is option- 25600 bacteria.

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Answer:

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Explanation:

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3 years ago
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Students set up the circuit pictured below.
Fofino [41]

Answer:

  • Just close the switch to allow for current flow
7 0
3 years ago
What is the probability that a cross between a true-breeding pea plant with spherical seeds and a true-breeding pea plant with w
notsponge [240]

Answer:

1 or 100%

Explanation:

Let the allele for seed shape be represented by S.

True breeding spherical shape seeded pea plant will have SS as genotype

True breeding pea plant with wrinkled seeds will have ss as genotype

Crossing the two:     SS  x   ss

Progeny: Ss, Ss, Ss, Ss

Based on the assumption that spherical shape allele is dominant over wrinkle shape allele, all the F1 offspring will have spherical seeds.

<em>Hence, the probability is 1 or 100%</em>

5 0
3 years ago
Some people use paint to protect the outside of their houses. Why does a house painted a dark color get hotter than a house pain
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Answer:

Dark color absorb more photons and thus gets more hot

Explanation:

Dark color is dark b/c it absorbs different wavelengths of light (think about little photons of light vibrating slighting differently) .This means it absorbs a lot of photons which makes it warmer.

If a thing is white, that means it reflects all lights and absorbs none. Thus, since it does not absorb photons (little packets of energy which is light), the house does not get warm.

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2 years ago
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