A water molecule could move all the way through a plant from soil to root to leaf to air and pass through a living cell only once. This living cell would be a part of which structure?
A) a guard cell
B) the root epidermis
C) the endodermis
D) the root cortex
C
Biology & Microbiology
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New species evolve from pre-existing species by the accumulation of
A. metabolic events. B. genetic mutations. C. proteomes. D. reproductive events. E. developmental events.
Biology & Microbiology
All of the following are second messengers except
A) calcium ions. B) IP3. C) DAG. D) cameleons. E) PDGF.
Biology & Microbiology
Explain which noise is found and which noise is eliminated in the water hole
What will be an ideal response?
Biology & Microbiology
Which pair is NOT matched correctly?
a. plant cell wall : cellulose b. intermediate filaments : tubulin c. microfilaments : actin d. cell membrane : phospholipid bilayer
Biology & Microbiology