the following table to answer questions 42-45 NH2 NH NH 42 These molecules are a
ID: 1040363 • Letter: T
Question
the following table to answer questions 42-45 NH2 NH NH 42 These molecules are all A) nitrogen bases B) nucleotides C) nucleosides D) amino acids E) purines 43 Which of these molecules are pyrimidines? A) A and C B) B and D C) A, C, and E D) C only E) All of these molecules are pyrimidines. 44 Which of these molecules is found in RNA but not in DNA? A) A ?) ? c) C D) D E) E 45 Molecule A is a(n) A) adenine B) thymine C) guanine D) uracil E) cytosine 46 The two strands of DNA in the DNA double helix are held together by bonds between nucleotides. A) hydrogen B) phosphodiester C) amide D) ionic E) glycosidicExplanation / Answer
66.)
All statements are true
67)
1.In eukaryotic cells, DNA is located in the nucleus, the mitochondria and the chloroplasts (occuring only in plants and some protists). The nucleus contains most DNA. It is present in this compartment in the form of linear chromosomes that together constitute the genome.
2 . A nucleotide consists of three things: A nitrogenous base, which can be either adenine, guanine, cytosine, or thymine (in the case of RNA, thymine is replaced by uracil). A five-carbon sugar, called deoxyribose because it is lacking an oxygen group on one of its carbons. One or more phosphate groups.
3.
Differences Between DNA and RNA
Structurally, DNA and RNA are nearly identical. As mentioned earlier, however, there are three fundamental differences that account for the very different functions of the two molecules.
RNA is a single-stranded nucleic acid.
RNA has a ribose sugar instead of a deoxyribose sugar like DNA.
RNA nucleotides have a uracil base instead of thymine.
Other than these differences, DNA and RNA are the same. Their phosphates, sugars, and bases show the same bonding patterns to form nucleotides and their nucleotides bind to form nucleic acids in the same way.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.