Question
12. Why is RNA necessary to act as a messenger? __ 13. Proteins are made where in the cell? __ 14. How is RNA different from DNA? (list 3 things) __ 15. The process of copying DNA is called __ 16. What is the shape of DNA? __ 17. Proteins are made from what subunits? __ 18. What base is found in mRNA, but not DNA? __
Solution
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(373 Votos)
Ricardo
Elite · Tutor por 8 anos
Resposta
12. RNA is necessary to act as a messenger because it carries genetic information from the DNA to the ribosomes, where proteins are synthesized.13. Proteins are made in the ribosomes of the cell.14. RNA is single-stranded, contains ribose, and uses uracil instead of thymine.15. The process of copying DNA is called replication.16. The shape of DNA is a double helix.17. Proteins are made from amino acids.18. Uracil is found in mRNA but not in DNA.
Explicação
## Step1RNA, or ribonucleic acid, is necessary to act as a messenger because it carries the genetic information from the DNA in the nucleus to the ribosomes in the cytoplasm, where proteins are synthesized. This process is known as transcription and translation.## Step2Proteins are made in the ribosomes of the cell. Ribosomes can be found either freely floating in the cytoplasm or attached to the endoplasmic reticulum.## Step3RNA is different from DNA in three main ways:1. RNA is single-stranded, while DNA is double-stranded.2. RNA contains the sugar ribose, while DNA contains the sugar deoxyribose.3. RNA uses the base uracil (U) instead of thymine (T), which is found in DNA.## Step4The process of copying DNA is called replication. This is a crucial process that occurs before cell division, ensuring that each new cell receives a complete set of genetic information.## Step5The shape of DNA is a double helix, which looks like a twisted ladder. This structure was discovered by James Watson and Francis Crick in 1953.## Step6Proteins are made from subunits called amino acids. There are 20 different amino acids that can be combined in various sequences to form a vast array of proteins.## Step7The base found in mRNA (messenger RNA) but not in DNA is uracil (U). In DNA, uracil is replaced by thymine (T).