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Kay [80]
3 years ago
11

As food molecules are broken down during __________, carbon is released back into the atmosphere as carbon dioxide.

Biology
1 answer:
elena-14-01-66 [18.8K]3 years ago
3 0
D. Cellular Respiration
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The correct answer for the question is B; Oxygen is used for respiration and carbon dioxide is a waste product.

Explanation;
Plants and animals use the process of respiration to produce energy which is used to fuel normal activities such as growth and movement. The process uses oxygen to break down nutrients such as carbohydrates, fats and proteins, and release energy needed by the plants and animals; but, also creates water and carbon dioxide as byproducts. 
Carbon dioxide is a by product of the process of respiration, a chemical reaction that plants and animals use to produce energy they need to carry out day to day activities. 
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3 years ago
Which two codons in the mRNA represent the amino acid phenylalanine
Trava [24]

Answer:

UUU and UUC

Explanation:

Information that encodes certain functional products called PROTEIN are present in the DNA molecule. However, the information needs to be expressed via the processes of transcription and translation. Transcription is the synthesis of a mRNA using a DNA template.

The mRNA then undergoes translation, where it is read in a group of three nucleotides called CODON. Each CODON specifies a particular amino acid. Due to the degenerate nature of the genetic code, more than one codon can specify one amino acid.

Hence, in the case of phenylalanine amino acid, codons UUU and UUC both specify it. This means that whenever UUU and UUC are read during translation, a phenylalanine is added to the peptide chain.

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What is the pH of skin
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