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nexus9112 [7]
3 years ago
7

Which activity can occur without the use of energy?

Biology
1 answer:
liberstina [14]3 years ago
4 0
Contraction of muscle tissue happens without the use of energy.

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) How many cells can be grown in a 5 mL culture using minimal medium before the medium exhausts the carbon?
kirza4 [7]

Answer:

5 * 10^{10}

Explanation:

The question is not complete. Remaining part of the question is as follows - Minimal growth medium for bacteria such as E. coli includes various salts with  characteristic concentrations in the mM range and a carbon source. The carbon source is  typically glucose and it is used at 0.5% (a concentration of 0.5 g/100 mL). For nitrogen,  minimal medium contains ammonium chloride (NH4Cl) with a concentration of 0.1 g/100 mL

How many cells can be grown in a 5 mL culture using minimal medium before the medium exhausts the carbon?

Solution -

We will first find the mass concentration of 0.5 g/100 mL of solution.

\frac{0.5}{100} gram per ml of glucose

The chemical formula of glucose is C_6H_{12}O_6

The molecular weight of glucose molecule is 180 grams per mole

Now, we will find the number of moles of glucose in a 5 ml medium -

\frac{\frac{0.5}{100} * 5}{180} \\1.39 * 10^{-4} mole

The number of carbon atom in each glucose molecule is equal to six, thus, number of minimal carbon mole is equal to

1.39 * 10^{-4} * 6\\= 8.34* 10^{-4}mole

Number of carbon atoms is equal to

8.34* 10^{-4} * 6.023 * 10^{23}\\= 5 * 10^{20}\\ Carbons

One bacteria has 10^{10} carbon molecule.Thus, 5 ml medium will have 5 * 10^{10} bacteria

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3 years ago
What's the best way should I study english language of office clerk when need to talk to clients for any types of company?
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Both plants and animals have these. It is a eukaryotic cell.
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Answer:

Dear Ms. Sandy Walters I am very impressed, happy, and greatful that you did this. I wouldn't expect any less from a great mind like you. Although we do not know eachother I do know one thing: Your work is inspiring.

Sincerely, hamborger69

Explanation:

Yeah it sucked I know but I hope it helps.

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