Molecules that permeate a plasma membrane by facilitated diffusion
A) do so much more quickly than those crossing by simple diffusion.
B) require the aid of transport proteins.
C) require energy.
D) move from an area of low concentration to an area of high concentration.
B
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Where are abscisic acid receptors located in plant cells?
a. cell wall b. cytoplasm c. endoplasmic reticulum d. plasma membrane e. nucleus
________ is a syndrome that occurs in females who have only a single X chromosome (XO)
Fill in the blank(s) with correct word
As a botanist working for a field museum, you spend many hours in the field looking for new species. On a recent trip you may have discovered a new plant species. Your observations of the new plant include small leaves with a single, unbranched vein and roots that seem to be simple extensions of the stem. Your new plant species is probably a(n):
A. Gnetophyte B. Fern C. Liverwort D. Angiosperm E. Lycophyte
Transcription factors include ______________.
A. promoters and insulators B. silencers and enhancers C. activators and repressors D. activators, repressors, and translational factors E. enhancers and repressors