CHAPTER PRACTICE PROBLEM

Chapter Practice Problems

FIITJEE CHENNAI CENTRE

Subject: BIOLOGY

Topic CELL

Chapter Practice Problems

1. The study of structure & composition of cell is called

(a)cell theory(b) cell study(c) cytology(d) all of the above

2. The term cell was first coined by

(a) Robert Hooke

(b) Robert brown

(c) Antony van leeuwenhoek(d) Von mohl

3. The term protoplast was coined by the scientist

(a) Von Mohl(b) Johannes purkinje(c) none of the above(d) both a & b

4. The statement that all cells arise from pre-existing cells was put forward by

(a) Von Mohl

(b) Mathias schleiden

(c) Theodor Schwann

(d) Rudolph Virchow

5. __________ are an exception to the cell theory

(a) Bacteria (b) viruses(c) protozoa(d) fungi

6. _______ is an example of an organ system

(a) Nervous system(b) Reproductive system (c) Excretory system(d) all of the above

7. Ribosome of prokaryotes are of ___________ type

(a) 70S(b) 80S(c) 100S(d) none of the above

8. The smallest cell will be

(a) Virus

(b) Fungi

(c) Mycoplasma galliseptum

(d) Acctobularia, sp9. The cell theory states that

(a) Cells contain a nuclei

(b) Cells are formed by pre-excisting cells

(c) Cells are the structural & functional unit of life(d) both a & b

(e) Both b & c

10. Omnis cellula e cellula-The above statement was given by

(a) Robert brown(b) Rudolf Virchow(c) M.J. Schleiden (d) Theodre Schwann

11. The main difference between the plant cells & the animal cells are that:

(a) Plant cells lack a rigid cell wall(b) Animal cells lack a rigid cell wall

(c) Plant cells possess small vacuoles(d) Animal cells have a large vacuole

12. Animal cells differ from plant cell in possessing

(a) Vacuoles (b) plastids(c) centrosomes(d) mitochondria

13. Animal cell differs from plant cells in not having

(a) cell wall(b) plastids(c) glyoxysomes(d) all of these

14. Which pure of structures are usually found in both plant& animal cells:

(a) Nucleus & cell wall

(b) nucleolus & chloroplast

(c) Cell membrane & cell wall(d) cell membrane & nucleolus

15. Plant cell wall mainly consists of

(a) starch(b) protein(c) cellulose(d) none of these

16. Which of the following cellular components can be used to distinguish a prokaryotic cell from a eukaryotic cell

(a) DNA

(b) proteins

(c) A nucleus

(d) A plasma membrane

17. Which of the following is absent in a prokaryotic cell?

(a) Golgi bodies

(b) Mitochondria

(c) Endoplasmic Reticulum(d) all of the above18. A cell has mitochondria, ribosomes, smotth ER & other organelles. Based on this information, it could not be a

(a) Bacterium(b) cell from onion(c) animal cell(d) cabbage leaf

19. Bacteria do not possess

(a) Ribosomes (b) Chromosome(c) Mitochondria(d) plasma membrance

20. Different types of cells have different shapes because

(a) they perform different functions

(b) they contain different types of organelles

(c) They are subjected to different rates of osmosis across their membranes

(d) all of the above

21. Plasmalemma is another term for:

(a) Cell wall

(b) Microfibrils

(c) plasma membrane

(d) Middle lamella

22. Carbohydrates present in the plasmalenma are in the form of :

(a) starch

(b) cellulose

(c) hemicellulose

(d) Glycoproteins & glycolipids

23. Phospholipid molecules present in the plasma membrane

(a) Antipathic molecules

(b) Amphipathic molecules

(c) Apathic molecules

(d) Adrenergic molecules

24. Of the four classes of cellular molecules, which one is not a component of cell membranes

(a) nucleic acids(b) lipids(c) carbohydrates (d) proteins

25. The most abundant lipid in cell membrane is

(a) cutin (b) steroid(c) cholesterol(d) phospholipid

26. To enter or leave a cell, substances must pass through

(a) Nucleus(b) Golgicomplex(c) Microtubule(d) plasma membrane

27. The movement of molecules from an area of higher concentration to an area of lower concentration is called

(a) Osmosis(b) Diffusion(c) Endocytosis(d) Exocytosis

28. Diffusion of water through a selectively permealole membrane is called

(a) Osmosis(b) diffusion(c) active transport (d) facilitated

29. Which of the following involves the nonselective uptake of tiny droplets of extracellular fluid?

(a) exocytosis(b) Pinocytosis(c) sodium pump(d) phagocytosis

30. Which of the following helps in cell wall formation?

(a) nucleus(b) nucleolus(c) chloroplast(d) endoplasmic

31. Which of the following is brown as Powerhouse of the cell?

(a) Ribosome(b) Nucleus (c) DNA(d) Mitochondria

32. Mitochondria are not found in

(a) Bacteria(b) viruses(c) Blue green Algae(d) all of these

33. DNA could be found in:

(a) Lysosomes(b) Mitochondria(c) Peroxisomes(d) Golgi apparatus

34. Engine of the cell is

(a) Vacuole(b) Lysosome(c) Mitochondria(d) Ribosome

35. Dictyosomes are:

(a) Golgi bodies

(b) Classes of Ribosomes

(c) Respiratory particles

(d) Flagella

36. The nucleus was discovered by

(a) Robert Hooke(b) Robert brown(c) Robert corti(d) Alfonso costi

37. Euchromatin is present in

(a) Metabolically active cells(b) metabolically inactive cells

(c) Both active & inactive cells(d) none of the above

38. An example of a non-membranous organelle is

(a) cilia(b) Flagell(c) Ribosomes(c) All of the above

39. Cytoskeleton helps in

(a) cell movements (b) cell division (c) cell shape

(d) all of the above (e) none of the above40. The outer membrane of a vacuole is called the

(a) protoplast(b) plasma membrane(c) Tonoplast(d) chloroplast

Answer the following

1. Define a plasma membrane

2. Define cell

3. Define osmosis

4. Write the key principle of the fluid-mosaic model

5. Define cytology

6. What are the functions of the plasma membrane

7. What is phagocytosis

8. What is a heterochromatin & Euchromatin

9. Draw a detailed structure of a nucleus

10. What are the basic functions of a cell

FIITJEE CHENNAI CENTRE. 175 Poonamallee High Road. Opp. Ega Theatre, Kilpauk. Chennai-10 PH. 044 - 42859701

FIITJEE CHENNAI CENTRE. 175 Poonamallee High Road. Opp. Ega Theatre, Kilpauk. Chennai-10 Ph. 044 - 42859701