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Biology 10th Class English Medium Chapter 15 Online Test
| Sr. # | Questions | Answers Choice |
|---|---|---|
| 1 | Adenine always pairs with: |
Guanine Cytosine Uracil thymine |
| 2 | Inside of double helix consists of: |
Nitrogenous bases sugar sugar Phosphate Phosphate |
| 3 | Outside back bone of double helix is made up: |
<p class="MsoNormal">Sugar <o:p></o:p></p> Phosphate Sugar Phosphate None of these |
| 4 | A DNA molecule consists of______ polynucleotide strands. |
2 3 4 5 |
| 5 | In________ James Watson and Francis Crick proposed the structure
for DNA. |
<p class="MsoNormal">1951 <o:p></o:p></p> 1953 1955 1957 |
| 6 | DNA wraps around histone protein and forms-rounded structures called as | <p class="MsoNormal">Nucleosomes <o:p></o:p></p> Ribosomes Lysosomes mRNA |
| 7 | Chromatin is made up of: | DNA Protein DNA+ Protein None of these |
| 8 | There are how many pairs of homologous chromosomes in human body cell? | 22 23 40 46 |
| 9 | Gene contain instructions for the synthesis of. | Fats Carbohydrates Vitamins Proteins |
| 10 | Chromosomes carry units of inheritance called as: | Chromatin DNA Genes None of these |
| 11 | Transmission of characteristics from parents to offsprings is called as: | Replication Inheritance co-dominance Mutation |
| 12 | Branch of biology that deals with the study of inheritance is called as: | Artificial selection Natural selection Genetics Histology |
