Most animal fats form a solid at room temperature, while plant fats remain liquid at room temperature. Which of the following is a feature of lipids in plant membranes that best explains this difference?

(a) unsaturated hydrocarbons
(b) longer hydrocarbon tails
(c) higher levels of sterols
(d) larger head groups


(a)

Biology & Microbiology

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In simple diffusion substances will move from an area of high concentration to an area of low concentration

1.True 2.False

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Which rule states that atoms attempt to acquire an outermost energy level with eight electrons through chemical reactions? 

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Cadherins and other cell-adhesion molecules that guide cell migration are

A) steroid hormones. B) glycoproteins. C) fatty acids. D) prostacyclins. E) ribonucleic acids.

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