Answer:
B i think
Explanation:
Because they take years and years to redevelope which makes them harder to get a hold of. ex) coal
<span>the answer is thymine</span>
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>
Answer:
16 possible combinations
Explanation:
Gamete formation involves the random and independent segregation of the alleles. During anaphase I (meiosis) occurs the independent separation of homologous chromosomes that migrate to opposite poles of the cell. This separation generates different chromosomal combinations in the daughter cells. There are two alternatives per homologous pair.
The number of gametes with different combinations is 2ⁿ, where
n = number of homologous pairs.
In the exposed example there are 4 pairs of chromosomes, so
the number of possible combinations of chromosomes = 2ⁿ = 2⁴ = 16