BIOLOGY HIGH SCHOOL

Which of the following is least likely to have difficulties with economic access to potable water?a.Zimbabwe

b.Australia

c.India

d.None of the above

Answers

Answer 1
Answer: Australia is the least likely of the countries listed to have problems gaining access to potable water. They are a more developed country with more money and therefore more access to resources and basic necessities. Sadly, the other countries listed are not as developed.
Answer 2
Answer:

out of all your options the best one to your question is Australia

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Question from Campbell Biology Chapter 16:42) Which of the following represents the order of increasingly higher levels of organization of chromatin?
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Answers

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Alchemy was practiced: -in the Middle Ages -by modern chemists -by Renaissance scientists

Answers

Alchemy was practiced in the middle ages, during the medieval period, around 1200-1300 AD

It was practiced in the Middle Ages

How do the characteristics of living things contribute to an organisms survival

Answers

Any characteristic, whether a physical trait, a behaviour, a physiological adaptation etc can make an organism more or less likely to survive in a particular environment. 

A dark colour could help a rabbit survive if it lives in a dark forest, because predators can't see it so well, but it would be less likely to survive in the arctic, where the environment is all white and it would show up. 

In terms of the characteristics, think about: does it help the organism get food? Does it help protect the organism from predators? If it does, that organism is more likely to survive, and pass the characteristic on to it's offspring. If a bacterium has a characteristic of not being killed by antibiotics, this will help it to survive and breed.

Which non-specific defense mechanism is mismatched with its associated body structure or body fluid?

Answers

Answer:

Mucociliary escalator- intestine

Explanation:

This is a complete mismatched. Simply because this  defense mechanism maintains the respiratory tract by sweeping  foreign substances inhaled with air molecules upwards in the trachea, to be swallowed or spit out .

It is composed of the Goblet cells and  Ciliated Epithelium.It is a defence mechanism which protects the lungs parenchyma from infection and  inflammation from foreign particles and microorganism. The mucus produced from the Goblet cells trapped theses particles,at the same time moistening the pathways,  while the cilliated epithelium beat in upward fashion to sweep them out through the trachea. To complete mucociliary clearance.

Which of the following BEST describes the theory of natural selection

Answers

What are the following?

What amino acid is carried by tRNA with anticodon, GUA?

Answers

Hi There! :)

What amino acid is carried by tRNA with anticodon, GUA?

The mRNA sequence that you have shown above has been given in triplets of bases. These triplets are called codons. Therefore the amino acid that tRNA will bring must be complementary to this hence called the anticodon. There is a rule. A always pairs with U (or T if it was a DNA strand) and C always pairs with G. 

For the first two triplets I will do the anticodon sequence then you can finish off : GUA GCC ..... 

Each codon or anticodon triplet codes for an amino acid. To find this out published tables are used. All the possible triplets will be on there. You will simply just have to read off the names of the amino acid stated next to it in that grid table. 
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