Cell: The Unit of Life

Which type of substance would face difficulty to pass through the cell membrane?

1. Substance soluble in lipids
2. Substance with hydrophobic moiety
3. Substance with hydrophilic moiety
4. All substances irrespective of hydrophobic and hydrophilic moiety

If the pH in lysosomes is increased to alkaline, what will be the outcome?

1. Lysosomal enzymes will be more active
2. Hydrolytic enzymes will function more efficiently
3. Hydrolytic enzymes will become inactive
4. Lysosomal enzymes will be released into the cytoplasm

Pathogenic bacteria gain resistance to antibiotics due to changes in their :

1. Nucleoid
2. Cosmids
3. Plasmids
4. Nucleus

Which of the following is an incorrect statement?

1. Nuclear pores act as passages for proteins and RNA molecules in both directions between nucleus and cytoplasm
2. Mature sieve tube elements possess a conspicuous nucleus and usual cytoplasmic organelles
3. Microbodies are present both in plant and animal cells
4. The perinuclear space forms a barrier between the materials present inside the nucleus and that of the cytoplasm

Match List-I with List-II. Choose the correct answer from the options given below.

1. (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)
2. (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
3. (a)-(i), (b)-(iv), (c)-(iii), (d)-(ii)
4. (a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)

When the centromere is situated in the middle of two equal arms of chromosomes, the chromosome is referred as :

1. Acrocentric
2. Metacentric
3. Telocentric
4. Sub-metacentric

The organelles that are included in the endomembrane system are

1. Golgi complex, Endoplasmic reticulum, Mitochondria and Lysosomes
2. Endoplasmic reticulum, Mitochondria, Ribosomes and Lysosomes
3. Endoplasmic reticulum, Golgi complex, Lysosomes and Vacuoles
4. Golgi complex, Mitochondria, Ribosomes and Lysosomes

Which of the following statements about inclusion bodies is incorrect?

1. These are involved in ingestion of food particles
2. They lie free in the cytoplasm
3. These represent reserve material in cytoplasm
4. They are not bound by any membrane

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

1. Peroxisomes
2. Golgi bodies
3. Polysomes
4. Endoplasmic reticulum

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

1. Lysosomes and Vacuoles
2. Nuclear envelope and Mitochondria
3. Mitochondria and Lysosomes
4. Chloroplast and Vacuoles