Answer:
Option B - Repolarization
Explanation:
The change in the membrane potential to a negative value just after action potential is known as repolarization phase.
In cell, the depolarization event allows sodium channel to open. The cell after a short period of time allows the event of repolarization. The repolarizationevent occurs due to outflow of K+ ions. Thus, a damaged neuron will prevent the repolarization event.
ureters
c.
pancreas
b.
kidneys
d.
urethra
Answer:
Macronutrients are defined as those nutrients that supply the body with calories (Protein, Fat, Carbohydrates).
Micronutrients are those nutrients that the organism needs in smaller amounts than Macronutrients (Vitamins are Minerals in humans and animals and Minerals in plants)
Explanation:
The nutrients are divided into two catogories, which are:
A. Macronuetrients.
B. Micronutrients.
Below you can find the definition of each one of them:
A. Macronutrients are defined as those nutrients that supply the body with calories, that's why the body needs them in large amounts.
There are three Macronutrients. These are:
1. Protein.
2. Fat.
3. Carbohydrates.
B. Micronutrients are defined are those nutrients that the organism needs in smaller amounts than Macronutrients.
In humans and animals Micronutrients are also known as "Vitamins and Minerals". They are essential to keep us alive, because they mantain the metabolic and physiological function of our organism.
Inr plants, Micronutrients are all minerals and are essential for plant growth.
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Answer:
Explanation:
Only archaebacteria are capable of methanogenesis
Archaebacteria who use other forms of cellular respiration also exist, but methane-producing cells are not found in Bacteria or Eukarya.
Unique cell membrane chemistry. Archaebacteria have cell membranes made of ether-linked phospholipids,
Answer:
Human activities have adversely affected the ecosystem because human needs wood for making houses so they cut the trees and the organisms lives there loss their habitat and whole ecosystem is disturbed. Tropical forest is also called lungs of planet earth because they provide oxygen to the atmosphere and absorbs carbondioxide gas in large amounts. About half of world species lives in these forest. If humans continue to cut these forest all the species lives their will be vanished and affected the whole world.
Answer:
Nuclear envelop
Explanation:
Nuclear envelop is the double membrane structure that makes the boundary of the nucleus. It serves to protect the DNA from the toxins, wastes and other harmful substances produced during metabolic reactions of the cell occurring in cytoplasm.
If the nuclear envelope does not protect DNA, DNA could be damaged by free radicals or toxins. A cell with damaged DNA is subjected to death.
Answer:
The Nucleus.
Explanation:
The nucleus is surrounded by a membrane called the nuclear envelope, which protects the DNA.