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Aneli [31]
3 years ago
14

Describe how the following parts of the body aid in respiration: nose, pharynx, larynx, trachea, and lungs.

Biology
2 answers:
Alborosie3 years ago
7 0
Air enters your body through your nose, then enters the pharynx through the two nasal passages. Then it passes into the larynx and then into the trachea though an opening called glottis. The trachea divides into two bronchi (one for each lung), and further branches into numerous bronchioles. At the end of each bronchiole, there is a cluster of air sacs called alveoli. It is inside the alveoli that gas exchange actually takes place. 
All of the above mentioned organs aid respiration as it is through them that oxygen-rich air enters the body, and then the oxygen enters our bloodstream in the lungs. Oxygen is used in aerobic respiration, a process in which energy is released from the food that we have eaten.
harina [27]3 years ago
6 0
They are are in your respiratory system and the are there to help you breath and you forgot avolli
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During translation, nucleotide base triplets (codons) in mRNA are read in sequence in the 5’ → 3’ direction along the mRNA. Amin
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Answer:

The question is incomplete, it lacks the mRNA sequence. The sequence is as follows:

5′−AUGGCAAGAAAA−3′

The answer is Met-Ala-Arg-Lys

Explanation:

Gene expression in living organisms involves the process of transcription and translation. Transcription is the synthesis of a complementary strand of mRNA from a DNA template while translation involves using the transcibed mRNA as a template to synthesize amino acid sequence (proteins).

In the RIBOSOME, where the synthesis of protein occurs, the mRNA nuceleotide sequence is read in a group of three nucleotides called CODON. Each codon specifies a particular amino acid. The collection of all codons is the genetic code. Hence, for a specific mRNA sequence that reads 5′−AUGGCAAGAAAA−3′. The nucleotides will be read three at a time starting with AUG which is a codon that encodes METHIONINE.

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Hence, the amino acid sequence using the above mRNA sequence, will read: Met-Ala-Arg-Lys

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3 years ago
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Answer:

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Explanation:

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The succession of metabolic reactions that transform a given initial substance into another is known as a metabolic pathway. The starting substance is known as a substrate or raw material. The final substance is usually known as the final product or metabolite (a metabolic pathway can generate several final products) and the intermediate substances as intermediate metabolites. An intermediate or final metabolite in one metabolic pathway may be the substrate in another, which makes the vast majority of metabolic pathways interconnected.

Metabolites can be classified into two large groups, primary and secondary. Primary metabolites are defined as those that are directly involved in the normal growth, development and reproduction of an organism with an important physiological function. On the contrary, secondary metabolites are not directly involved in these processes. The absence of a primary metabolite usually leads to immediate or short-term death while the absence of a secondary metabolite does not.

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