A major type of lipid found in cell membranes is

A) saturated fats.
B) phospholipids.
C) glycerol.
D) unsaturated fats.


Answer: B

Biology & Microbiology

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The greatest expression of the lac operon occurs when lactose levels are _____

A) low and glucose levels are low B) low and glucose levels are high C) high and glucose levels are low D) high and glucose levels are high

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Which density-dependent factor affects the size of a

population? a. wind velocity b. light intensity c. nutrient supply d. rainfall e. humidity

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Which of the following have four-chambered hearts?

A) Fishes B) Spiders C) Birds D) Frogs

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Which category of cognitive distortion is represented by the self-talk statement, “I missed my final shot during the pick-up game; I’m sure they’ll never let me in a game again.”

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