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3 years ago

Which organisms have the least amount of stored energy in an ecological pyramid

Biology

1 answer:

Alenkinab [10]3 years ago

5 0

<h2>Answer</h2>

Tertiary Consumers get least amount of the energy.

<h2>Explanation</h2>

In an ecological pyramid less energy is available to organisms in the upper level because each organism releases some of the chemical energy as food and to the air as thermal energy .Therefore primary consumers get almost 10% of autotrophs prduced energy. The second consumers in the pyramid get 1% from primary consumer. In the case of tertiary consumers, they get only 0.1%. Hence the top consumer of a food pyramid receives the least energy.

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Define embryonic stem cells. Explain the pros and cons of Embryonic Stem Cells

just olya [345]

Answer:

Embryonic stem cells are pluripotent stem cells derived from the inner cell mass of a blastocyst, an early-stage pre-implantation embryo. Human embryos reach the blastocyst stage 4–5 days post fertilization, at which time they consist of 50–150 cells.

Explanation:

Adult Stem Cells

Embryonic Stem Cells

Induced Pluripotent Stem Cells

Pros

Trans differentiate and and reprogramming of these cells is possible but is not well studied

Thought to be less likely to be rejected if used in transplants

Success has already been demonstrated in various clinical applications

Can maintain and grow for 1 year or more in culture

Established protocols for maintenance in culture

ESCs are pluripotent cells that can generate most cell types

By studying ESCs, more can be learned about the process of development

Abundant somatic cells of donor can be used

Issues of histocompatibility with donor/recipient transplants can be avoided

Very useful for drug development and developmental studies

Information learned from the “reprogramming” process may be transferable for in vivo therapies to reprogram damaged or diseased cells/tissues

Cons

Limitations on ASC ability to differentiate are still uncertain; currently thought to be multi or unipotent.

Cannot be grown for long periods of time in culture

Usually a very small number in each tissue making them difficult to find and purify

Currently there is no technology available to generate large quantities of stem cells in culture

Process to generate ESC lines is inefficient

Unsure whether they would be rejected if used in transplants.

Therapies using ESC avenues are largely new and much more research and testing is needed

If used directly from the ESC undifferentiated culture prep for tissue transplants, they can cause tumors (teratomas) or cancer development

Methods for ensured reproducibility and maintenance, as differentiated tissues are not certain.

Viruses are currently used to introduce embryonic genes and has been shown to cause cancers in mouse studies

7 0

3 years ago

A cat has 38 chromosomes. How many chromosomes would the cat’s sex cells have?

PIT_PIT [208]

Answer:

Explanation:

divide 38 by 2

8 0

2 years ago

A group of parasites called myxozoans have traditionally been considered simple multicellular protists. However, because these o

brilliants [131]

Answer:

A group of parasites called myxozoans have traditionally been considered simple multicellular protists. However, because these organisms possess stinging cells, some scientists consider them to be animals in the phylum that is named for such cells, the <u>cnidarians</u>.

Explanation:

Cnidarians are animals with radial symmetry, that is, their bodies can be divided, by different planes, into equal parts. It includes hydras, jellyfish, anemones and marine corals. Its body is a kind of sac with an opening (the mouth) surrounded by a circle of tentacles. Some have a dominant jellyfish phase, others polyp, or both. They present defensive nematocysts with stinging action.

3 0

3 years ago

Read 2 more answers

Simone is training for a swim race. How can she make sure she always trains at the same speed of 2 miles per hour? Check all tha

Kipish [7]

Answer:

B. Every point on the line is an equivalent ratio.

C. As the line goes up, the speed increases.

D. Simone can pick any ratio on the line and she will be swimming at a rate of 2 mph.

Explanation:

If the line on the graph has equivalent ratio, it shows that the Simone swim at the speed of 2 mph. If the line on the graph goes up , it means the speed of swimming increases while when the line on the graph goes down, the swimming speed decreases so maintaining the speed of 2 mph, the line have to go horizontally in straight line. If Simone can pick any ratio on the line present on the graph so she has to swimming at a rate of 2 mph.

5 0

3 years ago

This climate is always dry. Usually we think of these places being hot, but sometimes they are cold!

Lina20 [59]

Desert because they are always dry, but in the colder months they can get cold

6 0

2 years ago

Read 2 more answers