The way water travels up the length of the stem is explained by the cohesion-adhesion-tension theory.
Answer the following statement true (T) or false (F)
True
The way water travels up the length of the stem is explained by the cohesion-adhesion-tension theory.
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Many different structures make up a cell and have unique functions. Each cell structure is associated with a critical function in the cell. These pairings include
_____ microfilaments; cytoskeleton. _____ lysosomes; protein synthesis. _____ nucleus; DNA replication. _____cell membrane; barrier between the cell and the external environment _____ Golgi apparatus; modification, processing, and sorting of macromolecules.
_____ is an example of reproductive cloning
a. Somatic cell nuclear transfer (SCNT) b. Multiple offspring from the same pregnancy c. Artificial embryo splitting d. [Somatic cell nuclear transfer (SCNT)] and [Artificial embryo splitting] e. All of these
The minimum number of microbes required for infection to proceed is termed a/an ________.
A. indigenous biota B. infectious dose C. virulence factor D. minimal dose E. endotoxin
Cystic fibrosis is a recessively inherited disorder that results from a mutation in the gene encoding CFTR chlorine ion channels located on the surface of many epithelial cells. As shown in the figure, the mutation prevents the normal movement of chloride ions from the cytosol of the cell to the extracellular fluid. As a consequence of the mutation, the mucus layer that is normally present on the surface of cells becomes exceptionally dehydrated and viscous. An answer to which of the following questions would provide the most information about the association between the CFTR mutation and the viscous mucus?
A) Is the mucus also secreted from the cells through the CFTR proteins? B) How does the disrupted chloride movement affect the movement of sodium ions and water by the cell? C) How does the mutation alter the structure of CFTR proteins? D) What is the change in nucleotide sequence that results in the CFTR mutation?