Multiple Choice Questions on Genetic Material:
1. The genetic material of an organism is________
A. nucleic acid
B. protein
C. DNA
MCQ
D. RNA
Answer: C
2. The genetic material of Viruses is_________
A. DNA
B. DNA or RNA
C. RNA
D. None of these
Answer: B
3. The genetic material of pneumococcus is_______
A. DNA
B. RNA
C. DNA and RNA
D. DNA or RNA
Answer: A
4. What stores the genetic information in DNA?
A. Sugar
B. Phosphate
C. Nitrogenous base
D. Polymerase
Answer: C
5. Of the following organisms, the genetic material is RNA
A. Escherichia coli
B. Escherichia coli T2 phage
C. Tobacco mosaic virus
D. tobacco
Answer: C
6. Escherichia coli was infected with 32 P and 35 S labeled phage, and then tested, in the chemical composition of the progeny phage, detectable
A. There are 32 P
B. There are 35 S
C. There are 35 S and 32 P
D. Available in 35 S or 32 P
Answer: A
7. Building blocks of nucleic acids are ____________
A. Nucleotides
B. Nucleosides
C. Amino acids
A. Histones
Answer: A
8. The RNA→RNA pathway of genetic information is complementary to the central dogma, and the following organisms capable of this transfer are______
A. Tobacco
B. Tobacco mosaic virus
C. bacteriophage
D. Escherichia coli
Answer: B
9. The transformation experiment of Streptococcus pneumoniae can prove that________
A. DNA is the genetic material
B. DNA controls protein synthesis
C. Proteins are not genetic material
D. All of these
Answer: D
10. Experiments with phages infecting bacteria have shown_______
A. Protein is hereditary
B. DNA is the genetic material
C. DNA is the main genetic material
D. Protein and DNA are genetic material
Answer: B
11. The genetic material of eukaryotes exists in________
A. Inside the nucleus
B. Intracellular organelles in the cytoplasm
C. In the cytoplasmic matrix
D. in nucleus and cytoplasm
Answer: A
12. Which of the following statements about nucleic acids is correct
A. The five-carbon sugars in DNA and RNA are the same
B. The elements that make up DNA and ATP are of the same type
C. The genetic information of the T2 phage is stored in RNA
D. The number of purines in a single-stranded DNA molecule equals the number of pyrimidines
Answer: B
13. Fredrick Griffith’s experiment involving Streptococcus pneumonia lead to the discovery of____________
A. DNA as genetic material
B. RNA as genetic material
C. Protein as genetic material
D. Transforming principle
Answer: D
14. The following characteristics that are not necessary for genetic material are________
A. It has a double helix structure
B. The molecular structure is relatively stable
C. capable of self-replication
D. Can store a lot of information
Answer: A
15. Nucleic acids are a polymer of nucleotide monomeric units. Each nucleotide consists of_______
A. base-sugar-OH
B. sugar-phosphate
C. base-sugar-phosphate
D. base-sugar
Answer : C
16. Which of the following are not the components of RNA?
A.Thymine
B. Adenine
C. Guanine
D. Cytosine
Answer: A
17. The general characteristics of genetic material are________
A. The molecular structure is relatively stable
B. capable of self-replication
C. Can store a lot of information
D. All of these
Answer: D
18. How is the genetic material expressed?
A. By replication and transcription
B. By transcription and translation
C. By translation and modification
D. By mutation and transposition
Answer: B
19. In the transformation experiment of pneumococcus, the transformation factor for the transformation of R-type bacteria into S-type bacteria is_______
A. Capsule
B. protein
C. R-type RNA
D. S-shaped DNA
Answer: D
20. The work of Hershey and Chase shows that________
A. Viruses have DNA but no protein
B. Bacteria have DNA but no protein
C. Genetic material includes DNA and proteins
D. Genetic material is DNA
Answer: D
21. At the beginning of the 20th century, protein was still widely believed to be genetic material, and the reasons for making this judgment at that time did not include
A. Proteins of different organisms differ in structure
B. Proteins are closely related to biological traits
C. Proteins can replicate themselves
D. Different arrangements of amino acids in proteins can store a lot of genetic
Answer: C
22. Which of the following statements is correct_______
A. The genetic material of thermophilic bacteria must be DNA
B. Genes always exist in pairs in cells
C. Mendel's discovery of the laws of inheritance using the hypothetical-deductive method
D. Both A and C
Answer: D