Answer: E) lactate ..NAD+
Explanation:
In conditions of oxygen deprivation, cells can't undergo normal cellular respiration and must rely on other processes to obtain energy.
Muscle cells in particular, under anaerobic exercise, do not obtain enough oxygen to produce the energy needed and end up obtaining energy form a process different than cellular respiration: <em>lactic fermentation</em>.
Lactic fermentation turns a molecule of pyruvate into a molecule of lactate, at the same time it turns NADH into NAD+.
It is limited by the number of primary producers
A density independent factor limiting population growth would be earthquakes because it is not dependent on the size of a specifies or population in a certain area. An earthquake can occur and harm a small population or a big one.<span />
Answer:
A
Explanation:
<em>The correct option would be </em><em>A.</em>
<u>The presence of ammonia in the atmosphere of primitive earth provided the nitrogen found in the amine groups of amino acid and the nitrogenous bases in DNA. This has been proven through the simulation experiment of the primitive earth's atmosphere by Stanley Miller and Harold Urey.</u>
The water in the primitive atmosphere was formed from the condensation of water vapour from volcanoes that were characterics of the earth's environment while oxygen in itself is not needed for photosynthesis but a by-product of it.
Answer:
Babies are made when special cells called sperm (produced by men) combine with cells called eggs (produced by women) in a process called conception. Each of these cells is produced by a process called meiosis which makes cells containing half the information of the parent.
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