Answer the following questions true (T) or false (F)

1. Cholesterol helps to maintain the correct fluidity of the plasma membrane.

2. The phospholipid bilayer forms spontaneously in water.

3. The phospholipid bilayer forms because fatty-acid tails do not dissolve in water.


1. TRUE
2. TRUE
3. TRUE

Biology & Microbiology

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_________________ is a type of horizontal gene transfer during which genetic information is transferred from one bacterium to another via a pilus

A. Transduction B. Transformation C. Transferation D. Conjugation E. Conduction

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Which statement is TRUE?

a. Environment can readily alter some genotypes. b. Genotype is manifested in phenotype. c. Unlike phenotypic variation, genetic variation is easily observable. d. Variation dies with individuals. e. Phenotype is seen physically in the genotype.

Biology & Microbiology

Which receptors are responsible for touch, pressure, hearing, and equilibrium?

A) mechanoreceptors B) chemoreceptors C) photoreceptors D) thermoreceptors

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The ____ is a functional region found in certain proteins that are important in development. It consists of sixty amino

acids that form four helices. a. homeobox b. homeodomain c. homeogene d. homeochromosome e. functional group

Biology & Microbiology