Answer:
membrane potential reaches threshold
many voltage-gated Na+ channels open
Na+ ions rush into the cell
membrane potential rises
Explanation:
During resting condition, the axon membrane is polarized and has a voltage of -70mV. However, when action potential occurs after reaching the threshold level (voltage is equal to -55mV) after which the axon membrane first depolarizes and then polarizes again to reach the initial resting state. The threshold potential open the sodium voltage gates channels thereby allowing sodium ions to enter into the cell. As the sodium ion enters the cell, the membrane potential become less negative. When the membrane potential reaches the mark of +30mV, the sodium gated channels closes and potassium voltage gated channel opens.
1 and 2 and that’s the answer
Algae, Mosquito larva, Mallard Duck, and Racoon
"The first stage, which includes the light-dependent reactions" is the stage of photosynthesis among the choices given in the question that <span>Inglehaus’s experiment reveal. The correct option among all the options that are given in the question is the first option or option "A". I hope the answer helped you.</span>
Answer:
is a result of the absence of macrophages or B cells.
Explanation:
Severe combined immunodeficiency (SCID) results due to the absence of macrophages or B cells that is responsible for the immunity of our body. Severe combined immunodeficiency (SCID) is an inherited immunodeficiency disease (PIDD) that presents in infancy results in a weak immune system that is unable to fight against even mild infections so due the absence of macrophages or B cells, the body is vulnerable to diseases.
