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kaheart [24]
3 years ago
14

Phospholipids, steroids and glycolipids are amphipathic and can form membranes made of lipid bilayers. On the other hand, trigly

cerides are fatty acids linked to all three carbons of glycerol and are basically one hydrophobic ball of a macromolecule. Consider the hydrophobic and hydrophilic layers of a lipid bilayer. If a membrane were to form around a clot of triglycerides, what would be predicted?
Biology
1 answer:
Svetlanka [38]3 years ago
4 0

Answer:

The cell membrane of the living organism is made of the lipid bilayer and proteins. The most common lipid present in the plasma membrane is the phospholipids.

Phospholipids has both the hydrophobic tail and hydrophilic head. The hydrophobic region interacts with each other. The lipid layer of phopholipids gets in association with the hydrocarbon chain of triglycerides. Their hydrophilic part dissolve in each other.

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While alive, an organism absorbs (radioactive) carbon 14 at such a rate that the proportion of carbon 14 in the organism remains
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Answer:

The person has been dead for approximately 15,300 years

Explanation:

<u>Available data</u>:

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To answer this question we can make use of the following equation

Ln (C14T₁/C14 T₀) = - λ T₁

Where,

  • C14 T₀ ⇒ Amount of carbon in a living body at time 0 = 100%
  • C14T₁ ⇒ Amount of carbon in the dead body at time 1 = 15%
  • λ ⇒ radioactive decay constant = (Ln2)/T₀,₅
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Let us first calculate the radioactive decay constant.

λ = (Ln2)/T₀,₅

λ = 0.693/5600

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Now, let us calculate the first term in the equation

Ln (C14T₁/C14 T₀) = Ln (15%/100%) = Ln 0.15 = - 1.89

Finally, let us replace the terms, clear the equation, and calculate the value of T₁.

Ln (C14T₁/C14 T₀) = - λ T₁

- 1.89 = - 0.000123 x T₁

T₁ = - 1.89 / - 0.000123

T₁ = 15,365 years

The person has been dead for approximately 15,300 years

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