Correct option is B
DNA constitutes of two polynucleotide chains. The backbone is constituted by the sugar-phosphate bond and the bases project inside.
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Which of the following forms the backbone of DNA?
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CUET 2025 English Language Mock 01
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EnglishSimilar Questions
- 1)
Match Column ‘A’ with Column ‘B’ and select the suitable answer from the codes given below:
Column IColumn IIA. Leishmania donovani{i}MalariaB. Wuchereria bancrofti{ii}AmoebiasisC. Trypanosoma gambiense{iii}Kala azarD. Entamoeba histolytica{iv}Sleeping sickness(v) Filariasis - 2)
Which of the following statement(s) is/are correct?
{i}Collagen is the most abundant protein in animals.
{ii}RuBisCO is the most abundant protein in plants.
{iii}Z-DNA is the most common double helical structure found in nature. - 3)
Match Column I (taxonomic rank) with Column II (example/term) and choose the correct code.
Column IColumn IIA. Family{i}SolanumB. Kingdom{ii}SolanaceaeC. Order{iii}lycopersicumD. Species{iv}PlantaeE. Genus(v) Solanales - 4)
Given below are two columns:
Column I lists the names of scientists and Column II lists the discoveries made by them towards understanding photosynthesis in plants.
Match the scientists with the corresponding discoveries and choose the correct code.Column IColumn IIA. J.B. Van Helmont{i}Starch is the first visible product of photosynthesisB. Stephen Hales{ii}Water of soil contributes to the growth of plantsC. Engelmann{iii}Green plants get nourishment through their leaves from air and sunlightD. Sachs{iv}Action spectrum of photosynthesis - 5)
Match the components of the Electron Transport System (ETS) of aerobic respiration with their respective electron carriers.
Column IColumn IIA. Complex I{i}Cyt c → O₂B. Complex II{ii}NADH → CoQC. Complex III{iii}Succinate → CoQD. Complex IV{iv}CoQH₂ → Cyt c - 6)
Observe the columns and match the plants/types in Column I to the morphological forms in Column II.
Column -IColumn- IIA. Scapei. TinosporaB. Culmii. GrassesC. Lianaiii. OnionD. Creeperiv. BambooChoose the correct answer from the codes given below:
- 7)
Consider the statements — identify the incorrect ones:
A. Inulin is a polymer of fructose.
B. Starch is present as storehouse of energy in plants.
C. Cellulose is a polymer of sucrose.
D. Chitin is a heteropolymer.
Choose the correct answer: - 8)
Human placenta is derived from:
- 9)
Hormones secreted by the placenta to maintain pregnancy are:
- 10)
Match Column ‘A’ with Column ‘B’ and select the suitable answer from the codes given below:
Column IColumn IIA. Leishmania donovani{i}MalariaB. Wuchereria bancrofti{ii}AmoebiasisC. Trypanosoma gambiense{iii}Kala azarD. Entamoeba histolytica{iv}Sleeping sickness(v) Filariasis
