Cell - Structure and Functions Worksheet-2

Cell - Structure and Functions Worksheet-2

1. The largest organelle in the cell is:

(a) Nucleus                                    (b) Mitochondria

(c) Golgi complex                         (d) Lysosomes

2. Arrange the following in the ascending order of the number of nuclei present in each of them. Brain cell, paramoecium, RBC of mammals.

(a) Paramoecium, brain cell, RBC of mammals

(b) RBC of mammals, brain cell, paramoecium

(c) Brain cell, RBC of mammals, paramoecium

(d) All of these have same number of nuclei, i.e., one

3. The dense threadlike and rod like structures present in the nucleus are respectively:

(a) Genes and chromatin

(b) Chromosomes and centrosomes

(c) Centrosome and chromatin

(d) Chromatin and chromosome

4. Control room of the cell is:

(a) nucleus with its chromatin network

(b) Nucleoplasm

(c) Chromosomes only

(d) Nucleoid

5. The small rod shaped structure bound by a double membrane which helps in the oxidation of food to release energy is:

(a) Mitochondrion                       (b) Golgi complex

(c) Nucleus                                    (d) Vacuole

6. Energy currency of the cell is:

(a) ADP              (b) FTP              (c) ATP               (d) all of these

7. The intracellular transport structure which helps in the protein and lipid synthesis is:

(a) Ribosomes

(b) Microtubules & microfilaments

(c) Golgi complex

(d) Endoplasmic reticulum

8. Sac-like structures which help in the synthesis and storage of many substances is:

(a) Endoplasmic reticulum        (b) Nucleus

(c) Mitochondria                          (d) Golgi bodies

9. Which of the following organelle acts as digestive system within the cell?

(a) Golgi bodies                            (b) Centrosomes

(c) Lysosomes                               (d) Mitochondria

10. Suicidal bags and power houses of the cell are respectively:

(a) Mitochondria and lysosomes

(b) Lysosomes and mitochondria

(c) Lysosomes and Golgi complex

(d) Golgi complex and lysosomes

11. The structure found only in animal cells, which regulate cell division is:

(a) Chromosomes                        (b) Chromatin

(c) Centrosome                             (d) Spindle fibrils

12. The colourless plastids are called _____ and their main function is _____.

(a) Chloroplasts, photosynthesis

(b) Leucoplasts, respiration

(c) Chromoplasts, protection from sunlight

(d) Leucoplasts, storage of food

13. The green plastids contain:

(a) Carotenoids                             (b) Xanthophyll

(c) Chlorophyll                              (d) All of these

14. The membrane-bound, saclike structures which store food, wastes and water are called:

(a) Lysosomes                               (b) Centrosomes

(c) Chromosomes                         (d) Vacuoles

15. The extra protection in a plant cell which is made up of cellulose is:

(a) Cell membrane                       (b) Plasma membrane

(c) Cell wall                                   (d) all of these

Answer Key:

(1)-(a); (2)-(b); (3)-(d); (4)-(a); (5)-(a); (6)-(c); (7)-(d); (8)-(d); (9)-(c); (10)-(b); (11)-(c); (12)-(d); (13)-(c); (14)-(d); (15)-(c)