Answer:
The dna of every eukaryotic cell is stored in one or morechromosomes located in the nucleus
Explanation:
The nueclear compartment has 46 chromosomes each consisting of a long DNA molecule combined with proteins called histones (chromatin). When certain sectors of DNA are translated to generate RNA, these molecules leave the nucleus to begin protein synthesis.
Answer:
D) Na+ is used to repolarize the membrane.
Explanation:
Option D is wrong choice because it is K+ which is used to repolarize the membrane not Na+.
As soon as membrane gets depolarized because of influx of Na+ due to opening of voltage gated Na+ channels simultaneous opening of voltage gated K+ channels and closing of Na+ voltage gated channels takes place. As a result of which K+ moves out of the cell leading to drawing of electrochemical gradient out of the cell.
In order to achieve resting membrane potential, more Na+ must be out of the cell and more K+ must be inside the cell. There are many leaky channels on neurons from which Na+ has tendency to leak into the cell while K+ has the tendency to leak outside of the cell. So Na+/K+ pump which is located on the membrane of neuron keeps pushing Na+ outside of the cell and K+ inside the cell so as to maintain resting membrane potential which is -70 mV.
Answer:
The movement of ions or molecules across a cell membrane into a region of higher concentration
Answer:
Water and energy
Explanation:
Water and carbon dioxide are exchanged between the ocean and the atmosphere. Carbon dioxide is taken out of the atmosphere by photosynthesis into plants to produce ENERGY.
Answer:
Cross-pollination
Explanation:
cross-pollination is when pollen from one plant gets transported to another plant.
self-pollination is when pollen gets transported from the anther to the stigma of the same flower or a different flower on the same plant.
