Answer:
The correct answer is b. He determined that DNA contains four nitrogenous bases.
Explanation:
Levene was an American biochemist who studied the structure of DNA in the early 1900s and in 1920 he found that DNA consists of four nitrogenous bases that are Adenine, Guanine, Thymine, Cytosine.
He also found deoxyribose sugar and phosphate group and said that nucleotide is the basic unit of DNA which contains a ribose sugar with attached nitrogenous base and phosphate group.
He also concludes that an equal amount of adenine, guanine, thymine, and cytosine makes the DNA which is now known as tetranucleotide hypothesis. So the correct answer is b. He determined that DNA contains four nitrogenous bases.
The answer is; Beads of different color joined together on a piece of string
Primary structure of a protein is right after it has been translated from an mRNA by a ribosome. It is linear and has not yet been folded into a functional protein. The beads in the item represent amino acids joined together by peptide bonds.
Hey!
80 kilograms is 80,000 grams!
7910 is only 7.910 kilograms!
Final Answer - 80kg > 7910g
Hope This Helps!
Answer: Transcription
Explanation:
Transcription is the process by which DNA is copied (transcribed) to mRNA, which carries the information needed for protein synthesis. ... The pre-messenger RNA is then "edited" to produce the desired mRNA molecule in a process called RNA splicing.
Answer: Yes they are
Explanation: plz mark brainliest
