Answer: FALSE
Explanation:
The plasma membrane has both Na –K channels across it walls. They are membrane transport proteins which hydrolyse ATP s for the active transport mechanisms for transport of sodium and potassium ions across the plasma membranes .
Naturally,there are more potassium ion channels than sodium channels in plasma membrane; potassium is also extracellular while sodium is extracellular
Therefore ,when some potassium ions diffused into the Axoplasm, from the extracellular medium;;some potassium ions still move out BACK into the extracellular environments. Not all potassium are restricted from leaving .
This leakage occurs because of more available potassium ions channels than sodium ions, and higher number of available potassium ions
Thus the answer is FALSE
the ratio of diffusion <u>is 3 sodium out to 2 potassium in </u>
Stop copying and start studying
The nucleotide
bases are adenine (A), guanine (G), cytosine (C), thymine (T), and uracil (U).
The bases combine with sugar to make them adenosine, guanosine, cytidine, thymidine, and uridine
repectively.
The bases can
be arranged in many different combinations and the genes in their long chains
can have trillions of different combinations.
The Douglas fir adapted to enable its survival in the taiga biome due to waxy needles.
<h3>What is Douglas fir?</h3>
Douglas fir may be defined as any type of a genus of tall evergreen timber trees of the pine family having stout bark, pitchy timber, and drooping cones with expanding branching.
Douglas-fir has elongate, narrow, and waxy needle-shaped leaves. The presence of waxy leaves precludes the thrashing of water through the process of transpiration and also controls freezing and leaves drying out.
The complete question is as follows:
How has the Douglas-fir adapted to enable its survival in the taiga biome?
- low growing
- perennial
- waxy needles
- survive on limited nutrients
Therefore, the correct option is C, i.e. waxy needles.
To learn more about the Taiga biome, refer to the link:
brainly.com/question/26527043
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