Symbiosis is a close relationship between two species in which at least one species benefits. For the other species, the relationship may be positive, negative, or neutral. There are three basic types of symbiosis: mutualism, commensalism, and parasitism.
Mutualism
Mutualism is a symbiotic relationship in which both species benefit. An example of mutualism involves goby fish and shrimp
Darwin lived in a time where natural selection was a strange theory among scientists and researchers. This was especially true when other researcher Lamarck argued that organisms passed on helpful traits to their offspring, that they magically could form a new trait to adapt to their environment and then pass it onto their offspring. For example, if a giraffe was too short to reach food, it would grow a larger neck in its lifetime and then pass that trait onto its offspring. Darwin argued that, through the process of survival of the fittest, that short giraffe would die off and never receive the chance to pass on its shortness to future populations. Thus, taller giraffes would survive— they can reach food, shorter giraffes can’t— and the short genes would disappear. The fact that Darwin was introducing a new theory that nobody was used to at the time was peculiar, so he had few people on his side until long after his observations.
Another problem Darwin had was the lack of technology. To travel, Darwin would have to use boats to reach far away places, and of course, this took time.
The final problem Darwin had was the extra time it took for evolution, a process that can take up to millions of years. Evolution didn’t occur over night— it took time for Darwin to conduct experiments, observe, conduct them again, come to a conclusion, and so on.
Hope this helped a little!
Answer:
1: cell membrane
2. chloroplast
Explanation:
1. the cell membrane is the outer layer of an animal cell since they don't have cell walls
2. only plant cells have chloroplasts
Explanation:
El ADP con fosfato y la energía absorbida de los alimentos producen ATP
Two-third fraction of the carbon dioxide molecules released is generated during the citric acid cycle.
Explanation:
Aerobic respiration results in energy production as well as releases the waste products of carbon dioxide plus water.
Pyruvate oxidation during aerobic respiration leads to the production of carbon dioxide and pyruvate is converted into a two-carbon molecule aligned with acetyl CoA.
This compound then proceed to the citric acid cycle, oxidize, and results in the production of two carbon dioxide molecules along with one GTP or an ATP, 3 NADH, and 1 FADH molecule.
The citric acid cycle or the tricarboxylic cycle is a set of cyclic biochemical reactions taking place in aerobic organisms to oxidize the acetate (acetyl carbon molecules of the acetyl CoA) from proteins, carbohydrates, and fats into carbon dioxide and release energy.
