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poizon [28]
3 years ago
13

What percent of all the genes in E. coli are active all the time

Chemistry
2 answers:
valkas [14]3 years ago
8 0

Answer:

60%

Explanation:

E. coli is a bacterium found in large quantities in the digestive system of humans, cows and other mammals. In several countries, the bacterium has been responsible for a large number of outbreaks of contamination. In most cases, the disease causes nonlethal problems in the stomach. However, enterohemorrhagic E. coli (ECEH) causes more severe symptoms, ranging from bloody diarrhea to haemolytic uremic syndrome.

In any living organism genes are not active all the time, gene activation results from the response the organism needs for a given time or situation. In the case of E. coli, only 60% of its genes are active at the same time and all the time, the other 40% are waiting for the moment when some protein will need to be coded. Since bacteria have only one cell, gene activation is done very quickly to ensure survival.

Alisiya [41]3 years ago
5 0
60% are active all the time.
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Plz help ASAP it’s dude soon
Alex_Xolod [135]

Answer:

a

Explanation:

6 0
3 years ago
What is the molar mass of 37.96 g of gas exerting a pressure of 3.29 on the walls of a 4.60 L container at 375 K?
Phantasy [73]

The molar mass of the gas is 77.20 gm/mole.

Explanation:

The data given is:

P = 3.29 atm,   V= 4.60 L   T= 375 K  mass of the gas = 37.96 grams

Using the ideal Gas Law will give the number of moles of the gas. The formula is

PV= nRT    (where R = Universal Gas Constant 0.08206 L.atm/ K mole

Also number of moles is not given so applying the formula

n= mass ÷ molar mass of one mole of the gas.

n = m ÷ x   ( x  molar mass) ( m mass given)

Now putting the values in Ideal Gas Law equation

PV = m ÷ x RT

3.29 × 4.60 = 37.96/x × 0.08206 × 375

15.134 = 1168.1241  ÷ x

15.134x = 1168.1241

x = 1168.1241 ÷ 15.13

x = 77.20 gm/mol

If all the units in the formula are put will get cancel only grams/mole will be there. Molecular weight is given by gm/mole.

8 0
3 years ago
What is the wavelength (in nm) of
LenKa [72]

Answer:

λ = 0.45×10⁻⁶ m

Explanation:

Given data:

Wavelength of blue light = ?

Frequency of blue light = 6.69×10¹⁴ s⁻¹

Solution:

Formula;

Speed of wave = wavelength × frequency

Speed of wave = 3.00×10⁸ m/s

by putting vales,

3.00×10⁸ m/s = λ × 6.69×10¹⁴ s⁻¹

λ = 3.00×10⁸ m/s / 6.69×10¹⁴ s⁻¹

λ = 0.45×10⁻⁶ m

6 0
3 years ago
draw the lewis structure, including unshared pairs, of the following molecule. carbon has four bonds in the compound. propane (c
SIZIF [17.4K]

There are three carbon and 8 hydrogen present in propane molecule. The Lewis structure of propane is shown as:

Three molecules of such carbon atoms bound to eight molecules with hydrogen atoms make up the organic complex propane molecule.

It is known that carbon has 4 valence electrons and hydrogen has one valence electron. Carbon needs 4 extra electrons to complete its octet hence, it will share its electrons with with 4 hydrogen atom and complete its octet.

Carbon will be formed 4 bond . Three bond with hydrogen and one bond with carbon atom.

To know more about Lewis structure.

brainly.com/question/15837141

#SPJ4

6 0
2 years ago
How many moles of al is needed to replace all the iron from 5.6 moles of fe2o3
Arte-miy333 [17]
Necesito los puntos es urgente
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