Cell membranes consist mainly of a _____

a. carbohydrate bilayer and proteins c. lipid bilayer and proteins
b. protein bilayer and phospholipids


C

Biology & Microbiology

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The science of ____ explains the origin of life, the persistence of life, and studies the changes in living

things.

a. nanotechnology b. mathematics c. biology d. chemistry e. pharmacology

Biology & Microbiology

_________ occur where winter drought reduces photosynthesis and most trees drop their leaves

a. Tropical montane forests b. Tropical deciduous forests c. Boreal forests d. Dry savannas e. Temperate forests

Biology & Microbiology

A set of symptoms that usually occur together and characterize a disorder is called

a. an abnormality. b. a deviation. c. a syndrome. d. a carrier. e. a pedigree.

Biology & Microbiology

Calico cats are never male because:a

recessive genes are not usually expressed on their X chromosome. b. male hormones prevent expression of the calico phenotype. c. two different X chromosomes are needed for the expression of the calico phenotype. d. two different Y chromosomes are needed for the expression of the calico phenotype. e. one X chromosome and one Y chromosome are needed for the expression of the calico phenotype.

Biology & Microbiology