Biotechnology methods allow for the measurement of gene transcription levels. Mutations can be created in different regions of a DNA sequence to study the effect on gene expression. If a mutation was created in an enhancer that prevented molecules from binding, how would the transcription levels of the associated gene be affected

How is an environment able to support different varieties of organisms?

How do tides affect the organisms living in intertidal zones? a. no organisms live in intertidal zones due to the tumultuous environment. b. the mechanical forces of the waves keeps the organisms clean. c. only plants live in intertidal zones because the animals float away with the waves and never return. d. the mechanical forces of the waves can dislodge the organisms from their habitat.

The current thought on the structure of the cell membrane is: a. a static phosphate sandwich of lipids b. a fluid-mosaic of phospholipids and proteins c. a bilayer of proteins with static lipid molecules d. an impermeable bilayer of protein molecules e. a static and permeable phospholipid single layer