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Please fill in the blank in the following statement:

In archaea, phytanyl is composed of 4 isoprene molecules. Isoprene molecules cannot be classified as fatty acids because _____.

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Collen Von
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2 Nov 2018

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Related questions

Fill in the blank assignment

Biological membranes are primarily formed from two types oforganic molecules, (16)______, composed of amino acids and(17)_____, composed of phosphates, glycerol and fatty acids.Membranes are (18)___ ____ to molecules allowing some to freelypass through and restricting or preventing the passage of others.Molecules may cross membranes on their own moving from areas ofhigher to lower concentration, with no expenditure of externalenergy, in a process called (19)____. Protein molecules that spanthe membrane may assist or carry other molecules across themembrane, (20)_____ _____, also from areas of higher to lowerconcentration. (21)____ _____ moves molecules across membranes fromareas of lower to higher concentration with the use of energy inthe form of ATP. As opposed to the process of passive transport,illustrated by answers (19) and (20), molecules move against their(22) ______ _______.

If you compare two situations on either side of a cellularmembrane, they are said to be (23)_____ if their soluteconcentrations are equal. Solutions that have higher soluteconcentrations are (24)_____ when compared to solutions with lowersolute concentrations, (25)______. If molecules or substances aretoo large to pass through membranes on their own or with the use ofprotein carriers, vesicles may help to move these materials in orout of the cell as vesicles fuse with or pinch off membranes. This(26)____ ____ of materials is called (27)____ if materials aremoved into cells. The transport of lage solids or "cell-eating" is(28)_____. Entry of liquids is termed (29)____ or "cell drinking."Movement of materials out of the cell is (30)_____.

Nitrogen and phosphorus are in the same column of the periodic table. They have similar properties in bonding with other molecules because they have the same number of:
We cannot answer this question definitively because there is not enough information.
What I choose are wrong.

25. Which of the following statements concerning fatty acids is incorrect?

A. fatty acids are rarely found in the free state in nature

B. double bonds present in fatty acids are almost always in a cis-configuration

C. at least 20 carbon atoms must be present in the carbon chain of a fatty acid

D. some fatty acids needed in the human body must be obtained from food because they cannot be synthesized with the body

26. In which of the following types of lipids are two ester linkages and one amide linkage present?

A. glycerophospholipids

B. sphingophospholipids

C. sphingoglycolipids

D. triacylglycerols

27. Which is the correct series of reactions in fatty acid synthesis?

A. Condensation, reduction, hydration, reduction

B. Condensation, oxidation, dehydration, oxidation

C. Reduction, hydration, reduction, thiolysis

D. Oxidation, hydration, oxidation, thiolysis

E. Condensation, reduction, dehydration, reduction

28. Linoleic acid and linolenic acid are essential fatty acids because

A. They are precursors for palmitate.

B. They are local hormones.

C. They are omega-6 fatty acids.

D. They have cis-double bonds beyond carbon 9.

E. They are omega-3 fatty acids.

29. The process of fatty acid synthesis involves all of the following except:

A. complex Fatty acid synthase

B. Acetyl CoA carboxylase

C. NADH

D. Malonyl CoA

E. acetyl coA

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