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Vladimir [108]
3 years ago
10

Difference between hydra, sponge and obelia

Biology
1 answer:
Simora [160]3 years ago
5 0

Answer:

Hydra are simple freshwater animals, while Obelia lives in the sea or fresh water

Explanation:

The main difference is that Hydra's body shape is a polyp, while Obelia consist of polyps and medusae in its life cycle

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How does air move in a high pressure system? *
GarryVolchara [31]
It slowly gets compressed so I guess you can say it moves slowly as the space gets compressed
6 0
3 years ago
In a humoral or antibody-mediated immune response, specific B cells are stimulated by Helper T cells to help transform into plas
steposvetlana [31]

Answer:

An important feature that B-cells must have in order to become plasma cells and synthesize antibodies is increased rough endoplasmic reticulum in order to have the surface area needed for antibody production (option A).

Explanation:

The transformation of B cells into plasma cells to produce antibodies is a well known function of lymphocytes related to the immune response. This leads to a series of structural transformations in order to performs their function.

The rough endoplasmic reticulum (RER) has the function of contributing to protein synthesis, in conjunction with the ribosomes that are attached to it and the information of the mRNA.

<em>One of the changes experienced by B cells in their transition to plasma cells is the availability of larger RERs, in preparation for antibody synthesis, formed mostly by proteins</em>.

Learn more:

Plasma cells and humoral immune response brainly.com/question/1512036

5 0
4 years ago
Pectinate muscles extend from the atrial internal wall into the pouch-like structures that increase the total filling capacity o
alukav5142 [94]
Pectinate muscles are parallel ridges in the walls of the atria of the heart. The name is due to their resemblance to the teeth of a comb (pecten). The heart is the organ  pumps blood to all parts of the body. It is made up of four chambers, that is, right and left ventricles, left and right atria, and the blood vessels, Pulmonary artery, pulmonary vein, aorta, and venacava. An auricles are pouch like structure that increase the total filling capacity of the atrium and also increase the volume of blood that an atrium is able to contain.
3 0
3 years ago
After 2 weeks of radiation therapy for cancer of the breast a client experiences some erythema over the area being irradiated. t
gayaneshka [121]
The correct answer is that "further teaching on skin care is necessary". This patient is using tepid water to cleanse the area as well as applying ice three times a day. The nurse should educate the patient that the extremes of temperatures are not necessary and should be avoided such as warm to hot water as well as cold water or even ice. Cold water or ice will constrict blood vessels in the area and can produce tissue necrosis by ischemia. Warm to hot water can scald the skin (if hot enough) and even promote the redness as warm water dilates blood vessels.
7 0
3 years ago
A person who is optimistic:
Serggg [28]

Answer:A

Explanation:

because optimistic people are confident about their future

7 0
3 years ago
Read 2 more answers
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