Which of the following is NOT a component of a nucleotide?
Nitrogenous base
Pentose sugar
Phosphate group
Amino acid
Related Questions
If the total amount of adenine and thymine in a double-stranded DNA is 60%, then the amount of guanine in this DNA will be
15%
20%
30%
40%
According to Watson-Crick model, DNA exists as a …A… . The two strands of polynucleotides are …B… . The backbone is formed by the sugar …C…, …D… chain. The nitrogen bases are more or less …E… to this backbone
Choose the correct options for the blanks A, B, C, D and E
A: double helix, B: antiparallel, C: deoxyribose, D: phosphate, E: perpendicular
A: single helix, B: parallel, C: ribose, D: phosphate, E: parallel
A: double helix, B: parallel, C: deoxyribose, D: sulfate, E: perpendicular
A: triple helix, B: antiparallel, C: ribose, D: phosphate, E: oblique
The left handed DNA is called
A-DNA
B-DNA
Z-DNA
C-DNA
Which of the following is incorrect?
log(5 * 2) = log(5) + log(2)
log(5 + 2) = log(5) + log(2)
log(5/2) = log(5) - log(2)
log(5^2) = 2 * log(5)
A researcher isolates a nucleic acid sample and finds it contains 22% adenine. Which of the following is the MOST LIKELY composition of the sample?
22% thymine, 28% guanine, 28% cytosine
28% thymine, 22% guanine, 22% cytosine
22% uracil, 28% guanine, 28% cytosine
Equal amounts of all four bases
The double helical model of the DNA was proposed by Watson and Crick based on what data produced by Wilkins and Franklin?
Hybridization
DNA sequencing
Southern blotting
X-ray diffraction
The double-helix structure of DNA is stabilized by:
Covalent bonds
Ionic bonds
Hydrogen bonds
Van der Waals forces
The form of DNA with 34Å pitch with a rise per base pair of 3.4Å is called
A-DNA
B-DNA
Z-DNA
C-DNA
Which nitrogenous base is found in RNA but not in DNA?
Adenine
Guanine
Thymine
Uracil
Identify, in which of the following carbon compounds, heterocyclic rings can be found?
Proteins
Amino acids
Nitrogen bases
Lipids
