Dosage refers to the number of copies of each gene in a chromosome

A. true
B. false


A

Biology & Microbiology

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Rapid turgor pressure changes in specialized multicellular swellings called ____________ are associated with leaves that move in response to touch or light.  

A.  petioles B.  pulvini C.  stipules D.  pudicas E.  coleoptiles

Biology & Microbiology

Cells undergo exocytosis ____

a. to pump protons down a concentration gradient b. when replicating c. to secrete protein and wastes from the cell d. to ingest nutrients e. as a means of cellular protection

Biology & Microbiology

One of the major differences between the first and second line of defense is that

A. the first line defenses are anatomical barriers whereas the second line defenses are mechanisms. B. the first line defenses are mechanisms whereas the second line defenses are physical barriers to infection. C. the first line defenses involve the respiratory tract whereas the second line defenses involve the gastrointestinal tract. D. the first line defenses involve complement proteins whereas the second line defenses involve antibodies.

Biology & Microbiology

The source of life's diversity originates from differences in ________ .

a. DNA molecules b. sulfur backbones c. carbohydrate reservoirs d. lipid molecules e. cell wall structure

Biology & Microbiology