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Masteriza [31]
3 years ago
6

Archaea are thought to have diverged from some ancient group of _______ bacteria.

Biology
2 answers:
Anna11 [10]3 years ago
3 0
<span>Archaea are thought to have diverged from some ancient group of _______ bacteria<span><span><span>      </span> gram-positive</span></span></span>
leva [86]3 years ago
3 0

Answer:

The correct answer would be gram-positive bacteria.

Explanation:

The gram-positive bacteria cell structure is most similar to the archaeal cell because they contain a thick exoskeleton of different chemical composition and both cells have a single lipid bilayer.

In phylogenetic trees, the archaeal homolog characters are more closely related to gram-positive bacteria. It has been suggested that the archaea diverged from gram-positive bacteria in counter-reaction to antibiotic selection pressure.

Thus, the correct answer would be gram-positive bacteria.

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8 0
3 years ago
Which of the following samples will have the greatest volume at STP?a. 22 g Neb. 22 g Hec. 22 g O2d. 22 g Cl2 e. All have the sa
sammy [17]

Answer:

22g of He

Explanation:

Volume of gas at STP is given as :

Volume occupied(dm³) = number of moles x 22.4dm³mol⁻¹

In order to solve this given problem, we would first find the number of moles from the different masses of atoms and molecules given.

Number of moles = \frac{mass }{Molar mass}

Now, let us obtain the molar mass of the given atoms and elements:

For Ne; molar mass is the atomic mass = 20gmol⁻¹

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      Cl₂ = (35.5x2)gmol⁻¹ = 71gmol⁻¹

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Volume occupied by Ne at STP = 1.1 x 22.4 = 24.64dm³

       

Number of moles of He = \frac{22}{4} = 5.5mol

Volume occupied by He at STP = 5.5 x 22.4 = 123.2dm³

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