BIOLOGY HIGH SCHOOL

Which of the following is a drawback to superconductors?-They perform well only at very low temperatures.
-They are made from extremely expensive materials.
-They have very few uses.
-They are dangerous to use.

Answers

Answer 1
Answer: The answer is the first option.

"They perform well only at very low temperatures."

Despite of advantages of Superconductors such as power and cost efficiency, these conductors have drawbacks. Semiconductors have restricted operation range of operating temperatures. They are required to work at very low temperatures. 
Answer 2
Answer:

Answer:

They perform well only at very low temperatures.

Explanation:

it was on my test

Related Questions

Why is there more oxygen and carbon dioxide near the surface of the ocean than near the ocean floor? Organisms near the ocean floor cannot process these gases, so there is more gas at the surface. The salinity of ocean water traps these gases and prevents them from escaping into the atmosphere. Organisms near the surface do not use up these gases, so there is more gas at the surface. The exchange of these gases between water and the atmosphere occurs more readily at the surface.
The genetic information in human and chimpanzee DNA shows a high degree of similarity, as humans share about 96-99% of their DNA code with chimpanzees. What is an explanation for this similarity?
Which of the following kingdoms contains prokaryotes?A. Plantae B. Protista C. Eubacteria D. Fungi I think it is Eubacteria but im not for sure
1. Describe two advantages of genetic engineering.
Cactus spines are modified.1.) Leaves2.) Stems3.) Branches

According to some scientists, what is the connection between sea levels and the continental drift hypothesis? Explain.

Answers

Answer:

The movement of the continents in the continental drift hypothesis causes the land to rise or fall. The earth’s crust is dynamic and it is constantly moving slowly. If the continent rises, the sea level decreases and if the continent goes downward, sea level rises.

Explanation:

Which of the following conclusions can be accurately drawn by analyzing both the Silk Road trade and the African gold-salt trade?A. In both cases, wealthy Asian and European traders were able to exploit African merchants. As a result, African countries suffered from trade.

B. In both cases, Islam spread among societies that traded with one another. This contributed to Islam becoming the dominant religion in Africa and Asia.

C. In both cases, socieites were brough into contact through trade. The cultural exchanges that went along with that trade enriched those societies.

D. In both cases, interactions between societies led to conflict despite the success of trade contacts. These clashes left trading societies vulnerable.

Answers

Out of the choices given, the conclusion that can be made is that in both cases, societies were brought into contact through trade. The cultural exchanges that went along with that trade enriched those societies. The correct answer is C. 

A cell is viewed under a microscope and is found to have two nuclear envelopes and spindles that appear to be breaking apart. Which phase of mitosis is the cell most likely in?a. Telophase
b. Anaphase
c. Metaphase
d. Prophase

Answers

Mitosis is the process in which cells divide toform new cells. The cell that is being described under the microscope isalready in the Anaphase stage in mitosis.

Anaphase is the process in which two sister chromatids separate and move toopposite poles of the cell. These two sister chromatids contain identicalcopies of DNA that are joined at the middle called centromere. The chromosomesare separated by the mitotic spindle. Towards the end of the anaphase the two sister chromatids now have their twoseparate poles. The mitotic process then proceeds to theTelophase.

Answer:

A : Telophase

Explanation:

the final phase of cell division, between Anaphase and Interphase, in which the Chromatids or chromosomes move to opposite ends of the cell and two nuclei are formed.

Seeds that are transported by wind or water typically areA. dispersed by animals.
B. lightweight.
C. large.
D. sweet and fleshy.

Answers

Answer:

Option B, lightweight

Explanation:

Wind basically carries away the seeds which are light weight and winged which makes them peculiar to fit in the criteria required for floating. For example seeds of swan plants and cotton wood are light weight and also have some feather like bristles which allow them to be carried away by wind to a longer distance.

Water also carries light weight seeds as they can easily float on the water  for example seeds of mangrove trees.  

Thus, Option B is the correct answer
Seeds that are transported by wind or water typically are Lightweight 
so the answer is B

Saturated fats found in animal products, such as bacon and cheese, are also called A. amino acids.
B. cholesterol.
C. lipids.
D. triglycerides.

Answers

♥ B. cholesterol.
This is because all saturated fats are found in animal foods such as bacon. 
cheeses and Bacon and other animals products are rich in cholesterols.

Unlike DNA, RNA contains the nitrogenous base called a
Adenine
b
Phosphate group
c
Thymine
d
Uracil

Answers

The answer is D
It contains the base Uracil.
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