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Sergio [31]
3 years ago
6

The phylum Cycliophora are tiny organisms that live in large numbers on the outsides of the mouthparts and appendages of lobster

s. The feeding stage permanently attaches to the lobster via an adhesive disk and collects scraps of food from its host's feeding by capturing the scraps in a current created by a ring of cilia. The body is saclike and has a U-shaped intestine that brings it'sanus close to the mouth. Cycliophorans are coelomates, do not molt (though their host does), and their embryos undergo spiral cleavage. Basing your inferences on information in the paragraph, to which clades should cycliophorans belong? I answered it was b. Eumetazoa and Lophotrochozoa. I just have a difficult time reading the trees and I wanted to check :)
a.Metazoa and diploblasts
b. Eumetazoa and Lophotrochozoa
c. Deuterostomia and Ecdysozoa
d. Deuterostomia and Lophotrochozoa
e. Bilateria and Echinodermata
Biology
1 answer:
Colt1911 [192]3 years ago
8 0

Answer:

The answer is B. Eumetazoa and Lophotrochozoa.

Explanation:

The difference between the lophotrochozoa and deuterostomia is the way they develop on the cigote phase.

Lophotrochozoa are a clase that has a spyral shape.

The literature mentions that the phylum Cycliophora are coelomates and their embryos undergo spyral cleavage which is a common characteristic of the Lophotrochozoa.

The Eumetazoa clase are conformed on organisms whit his own tissues and the phylum Cycliophora has a "U-shaped intestine that brings it´s sanus close to the mouth".

In conclusion, the correct answer is that the phylum Cycliophora gets into the clases Eumetazoa and Lophotrochozoa.

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Use the information below to answer the following question(s). In a survey, the rate of heavy smokers was reported as 270 per 10
Eddi Din [679]

The probability that neither of them is a heavy smoker is 0.53 or 53%

<h3>What is genetic probability?</h3>

Probability serves to mathematically estimate the possibility of events that happen by chance, that is, as a matter of luck.

In this case:

Probability that selected one is heavy smoker is:

p=270/1000=0.27

Number of individuals selected  is 2 and We know that:

P(X=x)=nc_x(1-p)^{n-x}(p)^x

We need to prove that X=0:

P(X=0)=nc_0(1-0.27)^{2-0}(0.27)^0

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2 years ago
Before the forming urine flows into the distal tubule of the nephron, it is in the _____ ______ _____, where water is absorbed a
liraira [26]

Answer:

<em>"Before the forming urine flows into the distal tubule of the nephron, it is in the </em><em>loop of Henle</em><em>, where water is absorbed as the fluid descends into the deep medulla of the kidney, and salts are absorbed as the fluid flows back up to the cortex of the kidney".</em>

Explanation:

Henle´s loop is a specific section of renal tubules that forms the nephrons.

In this U-shaped region, the two parts of the contorted tubule, the distal and the proximal part, are very close to each other. In the kidney, both parts of the tubules are located in the renal cortex, while the loop of Henle is located within the renal medulla.

The proximal region of the Henle´s loop is a permeable region, unlike the proximal and distal regions of the renal tubule.  

This is why it is possible the interchange of water and ions in the Henle´s loop. In the loop´s walls, cells present aquaporines in their membranes that allow passive water absorption, while they do not allow the transport of ions and urea. In this way 25% of the water that passes through the kidney might be filtered.  

The ascendant side of the loop, which is narrower, the tubule wall is impermeable to water but allows the ions´reabsorption. Here, cells present sodium, potassium, and chloride channels.

Potassium sodium pump transporters are found in the basolateral zone. While in the apical area are active transporters of the 3 ions.

Due to these differences in the water and ions´absorption between the two parts of the Henle´s loop, a countercurrent multiplier effect is produced, stratifying the osmotic compounds of the medullary interstitium, being the part closest to the cortex less concentrated than the part closest to the renal papilla, which is about 4 times more concentrated in ions.

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Answer:

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Bigorexia: Bigorexia, also termed as Muscle Dysmorphia, is a condition in which the person thinks that he/she is very skinny or under weight when in real he/she is normal or usually over weight.

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