Answer:
8. D
9. D
10. C
I'm not sure about number 8
Answer:
ICF to ECF
Explanation:
This is achieved by the evacuation of potassium ions (K+ ions) and sodium ions (Na+) from the inside of the neuron cells to the outside through ion channels. This process requires energy. This eventually leaves the inside of the cell electronegative relative to the outside (usually leaving an emf of -70mV).
Answer:
c. constant expression of the lac operon in the absence of lactose.
Explanation:
The lac operon allows to shift the metabolism from glucose to lactose. In the abscence of lactose, this repressor, lacl, impede the expression of the lac operon. If this repressor is not functional, the lac operon would be expressed in the absence of lactose.
TT is homozygous dominant, gives phenotype tall.
Tt is heterozygous, also gives the phenotype tall.
