RUBY PARK PUBLIC SCHOOL,KOLKATA

CLASS 11

REVISION WORK SHEET

BIOLOGY

ENGLISH Given below are the pairs of cell organelles and their functions. Which out of these is not a
1 matching pair and why?
(i) Mitochondria: Produce cellular energy in the form of ATP.
(ii) Golgi apparatus: Site of formation of glycoproteins and gloycolipids.
(iii) Smooth endoplasmic reticulum: The major site for synthesis of lipid.
(iv) Centrosome: Trap light energy for photosynthesis.

2 How do neutral solutes move across the plasma membrane? Can the polar
3
molecules also move across it in the same way? If not, then how are these
transported across the membrane?
3 In an animal cell, DNA is present in

(a) nucleus and ribosomes

(b) ribosomes and mitochondria

(c) mitochondria and ER

(d) nucleus and mitochondria

4 A chromosome carrying centromere at one end, is called

(a) acrocentric

(b) submetacentric

(c) telocontric

(d) metacentric

5 What is a tonoplast?

(a) Outer membrane of mitochondria

(b) Inner membrane of chloroplast

 (c) Membrane boundary of the vacuole of plant cells

(d) Cell membrane of a plant cell

6 Which of the following is not true of a eukaryotic cell?

(a) Cell wall is made up of peptidoglycans

(b) 80S type of ribosomes are present in the cytoplasm

(c) Mitochondria contain circular DNA

(d) Membrane bound organelles are present

7 Who proposed the fluid mosaic model of plasma membrane?

(a) Benda

(b) Schleiden and Schwann

(c) Singer and Nicolson

(d) Robert Brown

8 Which of the following features is common to prokaryotes and plant cells?

(a) Presence of nuclear membrane

(b) Presence of cell wall

(c) Being autotrophs

(d) Presence of subcellular organelles

9 Mesosome in bacterial cells is formed by the extensions of plasma membrane into the cell. The extensions are in
the form of

(a) tubules (b) vesicles

(c) lamellae (d) all of these

10 Which of the following statements is not true about a bacterial cell?

(a) The pili are elongated and tubular structures made of a special protein.

(b) Fimbriae are small bristle-like surface structures that help in motility of cells.

(c) A bacterial flagellum consists of three parts-basal body, hook and flagellum

(d) Ribosomes are of 70S type, with two subunits of 50S and 30S.
11 Identify the correct statements about prokaryotic cells from the following and select the correct option.

A. Prokaryotic cells are generally smaller than eukaryotic cells

B. They multiply more rapidly than the eukaryotic cells

C. The organisation varies with the shape, size and functions

D. There are six basic shapes of bacterial cells

E. Bacteria, cyanobacteria and mycoplasma are some of the representatives of prokaryotic cells

(a) A, B and C

(b) A, B and D

(c) A, B and E

(d) B, C and E

12 Cell is the fundamental structure and functional unit of all living organisms; the evidence supporting this
statement comes from the fact that

(a) all organisms are composed of cell(s) and its/their products

(b) unicellular organisms are capable of independent existence and perform all essential life functions

(c) anything less than a complete structure of a cell does not ensure independent functioning/living

(d) both (b) and (c)

13 Theodore Schwann (1839) a British Zoologist; studied a number of animal cells. Which of the following
statement(s) is/are correct with regard to his report?

(a) Animal cells have a thin outer layer, which we call today, the plasma membrane.

(b) Presence of cell wall is a unique characteristic of plant cells.

(c) Bodies of plants and animals are composed of cell and their products.

(d) All of these.

14 Identify the correct statements from the following and select the option with all true statements.

A. Mycoplasmas are the smallest cells, which measure about 0.3 µm in length

B. Centrioles are the non-membrane bound cell organelles that help in cell division in plant cells

C. Nerve cells are some of the longest cells

D. Cytoplam and membrane-bound cell organelles are absent in prokaryotic cells

E. Human red blood cells are about 7.0 µm in diameter

(a) A, B and D (b) A, B and E (c) A, C and E (d) B, D and E

15 The endomembrane system includes

(a) endoplasmic reticulum and plasma membrane

(b) endoplasmic reticulum, golgi bodies and vacuoles

(c) endoplasmic reticulum, vacuoles, golgi bodies, and lysosomes

(d) endoplasmic reticulum, vacuoles, golgi bodies, lysosomes and plasma membrane

16 Identify the correct statements and select the option with correct statements.

A. Smooth endoplasmic reticulum is the major site for synthesis of lipids

B. Golgi apparatus remains in close association with the endoplasmic reticulum

C. The enzymes of lysosomes function optimally at the alkaline pH

D. Tonoplast is the double-membrane boundary of the vacuoles in plants

(a) A and B (b) A and C

(c) B and C (d) B and D

17 Ribosomes are the granular structures, composed of ribonucleic acid and proteins and exist as two subunits.
Identify the subunits of the 80S ribosome whose diagram is given below and select the correct option.

(a) A. Large subunit (50S), B. Small subunit (30S)

(b) A. Small subunit (40S), B. Large subunit (60S)

(c) A. Large subunit (60S), B. Small subunit (40S)

(d) A. Small subunit (30S), B. Large subunit (30S)

18 Which of the following statements is wrong?

(a) Leucoplasts have a double membrane-boundary, no pigments, but DNA and their own protein thesising
machinery

(b) The centrioles form the basal body of cilia and flagella

(c) Lysosomes are double-membrane bound vesicles, which contain hydrolytic enzymes
 (d) The golgi cisternae are concentrically arranged near the nucleus

19 Identify the wrong statement about the electron microscopic structure of cilia/ flagella.

(a) The EM picture shows that there is no membrane covering for cilia / flagella

(b) The central core is called axoneme

(c) The axoneme shows a pair of central tubules and nine doublet microtubules along
the periphery

(d) The cilia / flagella arise from centriole-like structure, called basal body.

20 Which of the following statements are correct? Select the option with correct statements.

A. The middle lamella is a layer mainly consisting of calcium pectate that glues the
adjacent cells

together.

B. Plant cells have centrosomes while animal cells have centrioles.

C. Lipid-like steroidal hormones are synthesised by smooth endoplasmic reticulum in

animal cells.

D. several ribosomes becomes attached to a single mRNA strand to form a polysome

for

translation

E. The rod-shaped (elongated) bacterial cells are called cocci.

(a) A, B and C (b) A, C and D

(c) B, C and D (d) B, D and E

21 Which of the following is a correctly matched pair of the cellular part and its description?

(a) Ribosomes – Those on the ER are 80S and those lying freely in the cytoplasm are
70S.

(b) Lysosomes – The enzymes are optimally active at slightly alkaline pH.

(c) Centrosome – Active site of synthesis of proteins for the nucleus.

(d) Thylakoids – Flattened membranous sacs forming the grana.

22 Read the following statements and select the option with correct statements.
 1. Mitochondria help in oxidative phosphorylation and generation of ATP.

2. ER helps in transport of substances and synthesis of proteins and secretion.

3. The endomembrane system includes plasma membrane, golgi apparatus, vacuole,

lysosomes

and mitochondria.

4. Ribosomes are involved in protein synthesis.

(a) 1 and 2 (b) 1, 2 and 3

(c) 2 and 3 (d) 1, 2 and 4

23 Match the types of vacuoles in Column-I with their respective descriptions in Column-II.

Column I Column II

A. Gas vacuoles 1. Water and excretory products in plant cells.

B. Contractile vacuoles 2. Formed by engulfing food particles.
C. Sap vacuoles 3. Stores lipids
D. Food vacuoles 4. Photosynthetic bacteria
5. Excretion and osmoregulation in protists.

(a) A – 5, B – 3, C – 2, D – 1

(b) A – 5, B – 4, C – 1, D – 2

(c) A – 4, B – 5, C – 1, D – 2

(d) A – 4, B – 3, C – 5, D – 1

24 Mark the odd one in each of the following groups and select the correct option.

A. Endoplasmic reticulum, Chloroplasts, Ribosomes, Golgi apparatus.

B. Chloroplasts, Mitochondria, Nucleus, Lysosomes.

C. Elaioplasts, Amyloplasts, Chromoplasts, Aleuroplasts.

D. Nucleolus, Ribosomes, Centrioles, Chloroplasts.

(a) A – Chloroplast B – Lysosomes C – Chromoplasts D –

 Nucleolus

(b) A – Ribosomes B – Lysosomes C – Chromoplasts D –

Chloroplasts

(c) A – Chloroplast B – Nucleus C – Elaioplasts D –

Nucleolus

(d) A – Golgi apparatus B – Nucleus C – Amyloplasts D –

Chloroplasts

25 Observe the diagram and answer the questions that follow:

The diagram given above shows the diagrammatic representation of a typical eukaryotic cell.

(a) Identify the parts labelled A, B, C and D and mention one function of each.

(b) Name the following:

(i) The longest cells in a human body.

(ii) The organisms with the smallest cells.