Which one of the following statements refers to Reductionist Biology?
| 1. | Chemical approach to study and understand living organisms |
| 2. | Behavioural approach to study and understand living organisms |
| 3. | Physico-chemical approach to study and understand living organisms |
| 4. | Physiological approach to study and understand living organisms |
Subtopic: Introduction to Botany |
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A specialised membranous structure in a prokaryotic cell which helps in cell wall formation, DNA replication is :
1. Cristae
2. Endoplasmic Reticulum
3. Mesosome
4. Chromatophores
1. Cristae
2. Endoplasmic Reticulum
3. Mesosome
4. Chromatophores
Subtopic: Cell Envelope and its Modifications |
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Level 1: 80%+
NEET - 2025
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Match List-I with List-II.
Choose the correct answer from the options given below:
| List-I | List-I | ||
| A. | Centromere | I. | Mitochondrion |
| B. | Cilium | II. | Cell division |
| C. | Cristae | III. | Cell movement |
| D. | Cell membrane | IV. | Phospholipid Bilayer |
| 1. | A-IV, B-II, C-III, D-I | 2. | A-II, B-III, C-I, D-IV |
| 3. | A-I, B-II, C-III, D-IV | 4. | A-II, B-I, C-IV, D-III |
Subtopic: Cell Membrane | Mitochondria | Nucleus | Cilia & Flagella |
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NEET - 2025
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Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
In the light of the above statements, choose the correct answer from the options given below :
| Assertion (A): | The primary function of the Golgi apparatus is to package the materials made by the endoplasmic reticulum and deliver it to intracellular targets and outside the cell. |
| Reason (R): | Vesicles containing materials made by the endoplasmic reticulum fuse with the cis face of the Golgi apparatus, and they are modified and released from the trans face of the Golgi apparatus. |
| 1. | (A) is True but (R) is False. |
| 2. | (A) is False but (R) is True. |
| 3. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 4. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
Subtopic: Golgi Apparatus |
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From the statements given below, choose the correct option:
| A. | The eukaryotic ribosomes are 80S and prokaryotic ribosomes are 70S. |
| B. | Each ribosome has two subunits. |
| C. | The two sub-units of 80S ribosomes are 60S and 40S, while those of 70S are 50S and 30S |
| D. | The two subunits of 80S ribosomes are 60S and 20S, and those of 70S are 50S and 20S |
| E. | The two subunits of 80S are 60S and 30S, and those of 70S are 50S and 30S. |
| 1. | A, B and E are true | 2. | B, D and E are true |
| 3. | A, B and C are true | 4. | A, B and D are true |
Subtopic: Ribosome and Inclusion Bodies |
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Match List-I with List-II:
Choose the option with all correct matches.
| List-I | List-II | ||
| A. | Adenosine | I. | Nitrogen base |
| B. | Adenylic acid | II. | Nucleotide |
| C. | Adenine | III. | Nucleoside |
| D. | Alanine | IV. | Amino acid |
| 1. | A-III, B-II, C-I, D-IV | 2. | A-II, B-III, C-I, D-IV |
| 3. | A-III, B-IV, C-II, D-I | 4. | A-III, B-II, C-IV, D-I |
Subtopic: Nucleic Acid | Amino Acids |
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Name the class of enzyme that usually catalyze the following reaction :
\(\mathrm{S}-\mathrm{G}+\mathrm{S}^{\#} \rightarrow \mathrm{~S}+\mathrm{S}^{\#}-\mathrm{G}\)
Where, G → a group other than hydrogen
S → a substrate
\(S^\#\) → another substate
\(\mathrm{S}-\mathrm{G}+\mathrm{S}^{\#} \rightarrow \mathrm{~S}+\mathrm{S}^{\#}-\mathrm{G}\)
Where, G → a group other than hydrogen
S → a substrate
\(S^\#\) → another substate
| 1. | Transferase | 2. | Ligase |
| 3. | Hydrolase | 4. | Lyase |
Subtopic: Enzymes Classification |
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The protein portion of an enzyme is called:
| 1. | Apoenzyme | 2. | Prosthetic group |
| 3. | Cofactor | 4. | Coenzyme |
Subtopic: Enzyme Cofactors |
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Which one of the following enzymes contains 'Haem' as the prosthetic group?
1. Succinate dehydrogenase
2. Catalase
3. RuBisCo
4. Carbonic anhydrase
1. Succinate dehydrogenase
2. Catalase
3. RuBisCo
4. Carbonic anhydrase
Subtopic: Enzyme Cofactors |
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What is the main function of the spindle fibers during mitosis?
| 1. | To repair damaged DNA |
| 2. | To regulate cell growth |
| 3. | To separate the chromosomes |
| 4. | To synthesize new DNA |
Subtopic: Cell Division: Mitosis (Karyokinesis) |
85%
Level 1: 80%+
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