The correct statement regarding the counter current exchange in fish gills are It is a very efficient way to capture oxygen from water, Water flows across the lamellae in the opposite direction of blood flow, Oxygen diffuses into the capillaries across the lamellae, because even as oxygen is depleted, it is still at higher concentration than in the Inflowing blood
Gills are used by fish to exchange gas. Gills have a lot of folds, which increases their surface area. They can extract oxygen at a rate that is three times faster than that of a human because the water flows past their gills in the opposite direction from the blood (this is known as countercurrent flow). Blood always flows close to water that has given up less oxygen due to the fact that it moves in the opposite direction of the water. In this manner, the blood is able to take in more and more oxygen as it flows. Even as the blood, which is about 80% oxygenated, travels to the lamella's conclusion, it passes water, which is at the lamella's beginning and is 90% oxygenated.Even as the blood, which is around 80% oxygen-saturated, approaches the lamella's end, it is passing water, which is 90–100% oxygen-saturated at the lamella's beginning. Because there is still a concentration gradient, the blood can continue to receive oxygen from the water even after it is highly saturated and has passed through most of the lamellae.
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Answer: Although produced in both males and females, by the mid-teens, estradiol production in females is 8 times greater than it was before puberty, while testosterone production in males is 20 times greater than it was before puberty.
Explanation:
Puberty is the transition phase in which somatic growth and sexual development are completed, with the consequent acquisition of reproductive capacity. Estradiol is the most potent and abundant estrogen, it is secreted by the ovarian follicle granulosa cells and also by the corpus luteum. testosterone is the hormone responsible for the emergence of secondary sexual characteristics, sperm production and increased sexual drive, aggression, height growth and physical strength, among others. There are many differences in body composition between both sexes, and those differences are also present in the hormones concentration. While estradiol is 8 times greater after puberty in females, this number is 20 times greatern in males, when we are talking about testosterone
Answer:
Which term can be applied to a population that is not in Hardy-Weinberg equilibrium? Evolving
D) the nucleotide sequence in its DNA
Categories within taxonomic classification are arranged in increasing specificity.<span>The most general category in taxonomic classification is domain, which is the point of origin for all species; all species belong to one of these domains: Bacteria, Archaea, and Eukarya.</span>Within each of the three domains, we find kingdoms, the second category within taxonomic classification, followed by subsequent categories that include phylum, class, order, family, genus, and species.At each classification category, organisms become more similar because they are more closely related.As scientific technology advances, changes to the taxonomic classification of many species must be altered as inaccuracies in classifications are discovered and corrected.
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