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Rainbow [258]
3 years ago
13

Which of the following describes a feedback mechanism

Biology
1 answer:
hodyreva [135]3 years ago
6 0

Answer:

C

Explanation:

I believe it is C

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When the CAU anticodon of a tRNAMet was modified to UAC, the anticodon for tRNAVal, valine aminoacyl-tRNA synthetase, recognized
aalyn [17]

Answer:

With the information obtained, it can be deduced that the tRNA anticodon region is recognized by an aminoacyl-tRNA synthetase, however some of these enzymes may have different elements in their structure and which would be the majority and which may trigger a fundamental role in the aminoacyl-tRNA synthetase recognition

6 0
3 years ago
Describe the path that air takes as it enters and passes through the human respiratory system.
BabaBlast [244]

Answer:

In our respiratory system, there is a pair of external nostril situated above the upper lip that receives atmospheric air and passed to the pharynx (a common passage for air and food). The pharynx passed this air to the trachea via larynx (known as the soundbox). The trachea is an extended part which is divided into left and right primary bronchi. Bronchi divide into secondary bronchi, tertiary bronchi, and bronchioles that ending up in thin terminal bronchioles. Each terminal bronchiole constitutes a number of irregular-walled, thin and vascularised bag-like structures called alveoli which are the primary sites of gases exchange.

8 0
3 years ago
If 70 percent of the hypothetical population passed along allele b, the dominant allele for brown eyes, and 30 percent passed al
FromTheMoon [43]
Dominant phenotype will be expressed on homozygous dominant(BB) and heterozygous(Bb) type. Using hardy-Weinberg equilibrium, the percentage of individual with brown eye would be:
homozygous dominant= BB= 70%*70%= 49%
heterozygous = 2Bb= 2* 70%*30%= 42%

Total brown eyes= homozygous dominant+ heterozygous
Total brown eyes= 49%+42%= 91%
8 0
3 years ago
Help which is it!?!
vlada-n [284]
Enzymes increase the rate of reaction
8 0
3 years ago
How can mutations be helpful? Give 2 examples
RSB [31]
Having two copies of the mutated genes cause sickle cell anemia, but having just one copy does not, and can actually protect against malaria - an example of how mutations are sometimes beneficial. 

The majority of mutations have neither negative nor positive effects on the organism in which they occur. These mutations are called neutral mutations. Examples include silent point mutations. They are neutral because they do not change the amino acids in the proteins they encode.

Hope this helped :)
6 0
3 years ago
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