9. The building blocks or monomers of nucleic acid molecules are called A. Pyrimidines C. Amino acids B. Monosaccharides D. Nucleotides 0. Which scientist(s) discovered a slimy white substance from nuclei and called it a nucleic acid?
9. The building blocks or monomers of nucleic acid molecules are called A. Pyrimidines C. Amino acids B. Monosaccharides D. Nucleotides 0. Which scientist(s) discovered a slimy white substance from nuclei and called it a nucleic acid?
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Nucleotides
It is an organic molecule made up of three basic components- a nitrogenous base, phosphate,and pentose sugar. The nucleotides are important for metabolic reactions andthe formation of DNA (deoxyribonucleic acid) and RNA (ribonucleic acid).
Nucleic Acids
Nucleic acids are essential biomolecules present in prokaryotic and eukaryotic cells and viruses. They carry the genetic information for the synthesis of proteins and cellular replication. The nucleic acids are of two types: deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). The structure of all proteins and ultimately every biomolecule and cellular component is a product of information encoded in the sequence of nucleic acids. Parts of a DNA molecule containing the information needed to synthesize a protein or an RNA are genes. Nucleic acids can store and transmit genetic information from one generation to the next, fundamental to any life form.
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Transcribed Image Text:39. The building blocks or monomers of nucleic acid molecules are called
C. Amino acids
D. Nucleotides
A. Pyrimidines
B. Monosaccharides
40. Which scientist(s) discovered a slimy white substance from nuclei and called it a nucleic acid?
A. Rosalind Franklin
C. Friedrich Miescher
B. Erwin Chargaff
D. Hershey and Chase
41. What is the function of helicase in DNA replication?
A. It untwists the double helix and separates the two DNA strands
B. It relieves strain from twisting of the double helix as it is unwound
C. It adds nucleotides to the new strand in the 5' to 3' direction
D. It joins Okazaki fragments
42. In the repair of damaged DNA, which enzyme removes the damaged DNA?
A. Helicase
C. Nuclease
B. Ligase
D. Primase
43. In the repair of damaged DNA, which enzyme seals the repaired DNA?
A. Helicase
C. Nuclease
D. Primase
B. Ligase
44. What is meant by the description "antiparallel" regarding DNA strands?
A. The 5' to 3' direction of one strand runs counter to the 5' to 3' direction of the other strand
B. One strand contains only purines and the other contains only pyrimidines
C. The twisting nature of DNA creates nonparallel strands
D. Base pairings create unequal spacing between the two DNA strands
45. If a species contains 23% of adenine in its DNA, what is the percentage of guanine?
A. 23%
B. 46%
C. 44%
D. 27%
46. In prokaryotes, the location for DNA Replication is
A. On the cell membrane
B. In the nucleus
C. In the cytoplasm
D. On ribosomes
47. In eukaryotes, the location for DNA Replication is
A. On the cell membrane
B. In the nucleus
48. If the protein coat of a virus that infects a bacterium is labeled with radioactive sulfur while the DNA of the virus
is labeled with radioactive phosphorus, over time
A. Only sulfur would make it into the bacterium
B. Only phosphorus would make it into the bacterium
C. Neither would make it into the bacterium
D. Both would make it into the bacterium
49. If radioactive guanine is added to the growth medium of cells, which macromolecules will be florescent/ labeled?
A. Protein
D. DNA
E. Both DNA and RNA
B. Carbohydrates
C. RNA
C. In the cytoplasm
D. On ribosomes
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