Match the following columns and select the correct option:

NEET-(Oct)2020 [cell-the-unit-of-life] [class-xi ]

• (A)-(II), (B)-(I), (C)-(III). (D)-(IV)
• (A)-(III), (B)-(I), (C)-(II), (D)-(IV)
• (A)-(IV), (B)-(II), (C)-(I), (D)-(III)
• (A)-(I), (B)-(II), (C)-(III), (D)-(IV)
Correct Option: A  [ (A)-(II), (B)-(I), (C)-(III). (D)-(IV) ]

Remark:

Which of the following elements helps in maintaining the structure of ribosomes?

NEET-(Oct)2020 [cell-the-unit-of-life] [class-xi ]

• Magnesium
• Zinc
• Copper
• Molybdenum
Correct Option: A  [ Magnesium ]

Remark:

Which is the important site of formation of glycoproteins and glycolipids in eukaryotic cells?

NEET-(Sept)2020 [cell-the-unit-of-life] [class-xi ]

• Endoplasmic reticulum
• Peroxisomes
• Golgi bodies
• Polysomes
Correct Option: C  [ Golgi bodies ]

Remark:

The concept of "Omnis cellula-e cellula" regarding cell division was first proposed by:

NEET-2019 [cell-the-unit-of-life] [class-xi ]

• Theodore Schwann
• Schleiden
• Rudolf Virchow
• Aristotle
Correct Option: C  [ Rudolf Virchow ]

Remark:

Which of the following pair of organelles does not contain DNA:

NEET-2019 [cell-the-unit-of-life] [class-xi ]

• Mitochondria and Lysosomes
• Chloroplast and Vacuoles
• Nuclear envelope and Mitochondria
• Lysosomes and Vacuoles
Correct Option: D  [ Lysosomes and Vacuoles ]

Remark:

The shorter and longer arms of a submetacentric chromosome are referred to as:

NEET-2019 [cell-the-unit-of-life] [class-xi ]

• p-arm and q-arm respectively
• s-arm and l-arm respectively
• q-arm and p-arm respectively
• m-arm and n-arm respectively
Correct Option: A  [ p-arm and q-arm respectively ]

Remark:

Which of the following statements regarding mitochondria is incorrect?

NEET-2019 [cell-the-unit-of-life] [class-xi ]

• Mitochondrial matrix contains single circular DNA molecule and ribosomes.
• Inner membrane is convoluted with infoldings.
• Enzymes of electron transport are embedded in outer membrane.
• Outer membrane is permeable to monomers of carbohydrates fats and proteins.
Correct Option: C  [ Enzymes of electron transport are embedded in outer membrane. ]

Remark:

Which of the following statements is not correct?

NEET-2019 [cell-the-unit-of-life] [class-xi ]

• Lysosomes have numerous hydrolytic enzymes.
• The hydrolytic enzymes of lysosomes are active under acidic pH.
• Lysosomes are membrane bound structures.
• Lysosomes are formed by the process of packaging in the endoplasmic reticulum.
Correct Option: D  [ Lysosomes are formed by the process of packaging in the endoplasmic reticulum. ]

Remark:

Match List-I with List-II.

NEET-2024 [cell-the-unit-of-life] [class-xi ]

• A-III, B-IV, C-II, D-I
• A-I, B-II, C-III, D-IV
• A-II, B-III, C-I, D-IV
• A-III, B-II, C-IV, D-I
Correct Option: D  [ A-III, B-II, C-IV, D-I ]

Remark:

The DNA present in chloroplast is:

NEET-2024 [cell-the-unit-of-life] [class-xi ]

• Circular, double stranded
• Linear, double stranded
• Circular, single stranded
• Linear, single stranded
Correct Option: A  [ Circular, double stranded ]

Remark: Explanation: NCERT Page No.136,(Topic-8.5.5 Plastids)