Nucleic Acids - Mock Test 2

Question 11

nucleotides have how many components

A) 2 B) 3 C) 4 D) 5

---

No Details

Question 12

Nucleotides are linked together to form nucleic acid through which type of bond

A) Glycosidic bond B) Phosphor-di-ester bond C) Both D) None

---

No Details

Question 13

Nucleic acids combine with which biomolecule

A) Fats B) Carbohydrates C) Lipids D) Proteins

---

No Details

Question 14

Histones

A) are negatively-charged globular proteins. B) contain both α-helix and β-pleated sheet. C) have molecular weights in excess of 100,000. D) contain high amounts of basic amino acids.

---

No Details

Question 15

Which is a characteristic of eukaryotic genetic material

A) Eukaryotic genetic material consists of supercoiled circular DNA molecules complexed with proteins into chromosomes. B) Eukaryotic genetic material consists of relaxed linear DNA molecules complexed with RNA into a 30 nm fiber. C) Eukaryotic genetic material is compacted by wrapping the double-helix around histone proteins to form nucleosomes. D) Eukaryotic genetic material is compacted by folding linker regions around non-histone proteins to form a scaffol

---

No Details

Question 16

Which property is shared by the five histone proteins

A) They are acidic proteins with relatively large molecular weights. B) They are multimeric proteins with high levels of Arg and Lys. C) They are fibrous proteins with high amounts of α-helix. D) They are globular proteins with a positive charge.

---

No Details

Question 17

Which describes the structural properties of a eukaryotic chromosome

A) It contains a double-helix composed of nucleosomes each with four million base-pairs. B) It is one double-stranded linear DNA molecule bound to proteins for compaction. C) It is arranged into a 30 nm fiber which is attached to the cell membrane. D) It contains linker regions which are arranged into loops and coiled to form a helix.

---

No Details

Question 18

Which are characteristics of bacterial genetic material

A) It is double-stranded and supercoile4⃣ B) It is single-stranded and relaxe4⃣ C) It is circular and compacted into palindromes. D) 2⃣ It is single-stranded and relaxe

---

No Details

Question 19

A new virus, virus X, is isolated and studie4⃣ Which molecule is most likely to be the genetic material of virus X

A) a linear DNA molecule containing 10,000 base-pairs B) a linear RNA molecule containing plasmids C) a circular DNA molecule containing nucleosomes D) Which molecule is most likely to be the genetic material of virus X? 1⃣ a linear DNA molecule containing 10,000 base-pairs 2⃣ a linear RNA molecule containing plasmids 3⃣ a circular DNA molecule containing nucleosomes

---

No Details

Question 20

Assume that DNA molecules are studied in a variety of organisms and found to have the following properties. Which property would be consistent with the hypothesis that genetic material is composed of DNA

A) DNA in all organisms is composed of the same nucleotides. B) DNA in an organism remains constant as the organism ages. C) DNA from two different organisms has the same base composition. D) DNA is different in two different cells of the same organism.

---

No Details