Select all that apply. Which of the following are not properties of lipids?

derived from fish, beans, milk, and eggs
held together by peptide bonds
made up of steroids and phospholipids
deep, long-term storage of energy

b

Explanation:

because they are held together by ester bonds not peptide bond :)

the answer that best describes the relative refractory period in the neuron is the resting membrane potential is restored, but concentrations of sodium and potassium are not restored to their original state.

the refractory period is the time during which another stimulus given to the neuron will not lead to a second potential. thus, because na+ channels are inactivated during this time, additional depolarizing stimuli do not lead to new action potentials.  

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not sure but try c two haploid cells

explanation: