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Mariana [72]
4 years ago
11

Please help me write 5 to 7 sentences about closed and open systems.

Biology
1 answer:
Mrac [35]4 years ago
4 0

Answer:

See the answer below, please.

Explanation:

Thermodynamic systems (that portion of the universe under study), can be defined as closed, open or isolated.

Closed systems: those in which only energy is exchanged (either in the form of heat or work) but not matter with the surroundings.

Open systems: those that exchange matter and energy with the surroundings.

Isolated systems: are those in which there is no exchange of energy or matter with the surroundings.

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In a study researches used stem cells to treat 130 dogs with arthritis there is a loss of cartilage tissue that cushions the bon
givi [52]

In the treatment applied to dogs, in 22% of the dogs, the cell specialization process was not successful because the stem cells did not improve the arthritis problem

Stem cells are a type of cell that can transform into any of the 44 types of cells in the body, in a process called cell specialization. For instance:

  • Neurons
  • Sperms or ovules
  • Pneumocytes
  • Cells of the epidermis

Cell specialization is a term that refers to the process in which stem cells change from one cell type to another, stem cells modify their genetic expression, acquire specific morphology and functions.

According to the above, the treatment process that was not successful in 22% of the dogs was the cell specialization process, so they could not become the type of cell required to improve the condition of the dogs.

Learn more in: brainly.com/question/12730320

7 0
2 years ago
Prairie dogs are rodents that live in colonies. Black-tailed prairie dog (Cynomys ludovicianus) colonies typically have around 1
Tresset [83]

Population density is the aspect of population ecology of the black-tailed prairie dog does this statement describe.

Explanation:

Population density is the number of organisms are there in per unit area. It is used to measure geographical area occupied by organisms and its statistics.

In population ecology the structure, dynamics and contribution of population of species is studied. The idea of species distribution is studied in it.

The population density determines the number of species or members of particular population are present is a particular area.

An area of  low density population will have more resources and more area per organism and less competition for resources and vice versa for high density population.

Prairie dogs have 12 adults per hectare of area this tells the population density of the rodents.

7 0
3 years ago
What is the name for the process of maintaining a stable environment within a cell
BigorU [14]

homeostasis is the answer

7 0
4 years ago
Read 2 more answers
The following is a list of events involved in the activation of a cell by a steroid hormone. Which one of the following answers
ira [324]

Answer:

diffusion of the hormone through a target cell membrane

formation of a hormone-receptor complex

activation of a gene

cellular response to the hormone

production of a protein

Explanation:

Steriod hormone are primary hormones derived from lipids. Such as reproductive hormones i.e the testosterone and the estrogens, which are produced by the gonads (testes and ovaries). Steroid hormones are not soluble in water (they are hydrophobic). For a new cell to be activated by a steriod hormone, there are a lot of steps invovled, Steriod hormones must travel to their target cell bound to a transport protein (i.e diffusion of the hormone through a target cell membrane).

Once the hormone binds to the receptor in the targeted cell, a chain of events is initiated that leads to the target cell’s response (I.e formation of a hormone-receptor complex). Hormones plays a vital role in the regulation of physiological processes because of the target cell responses they regulate.

The message a hormone sends is received by a hormone receptor, (a protein located either inside the cell or within the cell membrane). The receptor will process the message by initiating other signaling events such as (activation of a gene) or cellular mechanisms that result in the target cell’s response. Hormone receptors recognize and respond to them (i.e cellular response to the hormone). Thus, the response triggered by a hormone depends not only on the hormone, but also on the target cell.

Once the target cell receives the hormone signal, it can respond in a variety of ways. The response may include the (production of protein synthesis), activation or deactivation of enzymes, alteration in the permeability of the cell membrane,  and stimulation of the secretion of products. etc

5 0
3 years ago
The results from a DNA fingerprint were inconclusive. This means _____.
Sloan [31]
The test was faulty and did not yield accurate results
3 0
3 years ago
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