Size of a Cell

Q.

Describe cell membrane and its functions

Q.

Question 5

Different cells have different sizes. Arrange the following cells in an ascending order of their size. Choose the correct option among the followings.

I. Mycoplasma II. Ostrich eggs

III. Human RBC IV. Bacteria

(a) I, IV, III, II (b) I, II, III, IV

(c) II, I, III, IV (d) III, II, I, IV

Q. The stage characterized by the appearance of recombination nodule is–

1. Zygotene
2. Pachytene
3. Leptotene
4. Diplotene

Q. Match the following based on cell shapes.

$\begin{array}{cccc}& \text{Column-I}& & \text{Column-II}\\ \text{A.}& \text{Round and biconcave}& 1.& \text{Nerve cell}\\ \text{B.}& \text{Long and narrow}& 2.& \text{Leucocyte}\\ \text{C.}& \text{Branched and long}& 3.& \text{Erythrocyte}\\ \text{D.}& \text{Amoeboid}& 4.& \text{Tracheid}\\ \text{E.}& \text{Elongated}& 5.& \text{Columnar epithelium}\end{array}$

1. A-1, B-2, C-3, D-4, E-5
2. A-3, B-5, C-1, D-2, E-4
3. A-3, B-4, C-5, D-2, E-1
4. A-2, B-5, C-1, D-3, E-4

Q. Match the following:

	Column I		Column II
A	Largest isolated single cell	i	Red blood cells
B	Longest cell	ii	White blood cells
C	Round and biconcave	iii	Egg of an ostrich
D	Amoeboid	iv	Nerve cell

1. A-iii, B-iv, C-i, D-ii
2. A-iii, B-ii, C-i, D-iv
3. A-ii, B-iv, C-i, D-iii
4. A-ii, B-i, C-iv, D-iii

Q. Comparing large and small cells, which statement is correct?

1. Small cells have a small surface area per volume ratio
2. Exchange rate of nutrients is fast with large cells
3. Small cells have a large surface area per volume ratio
4. Exchange rate of nutrients is slow with small cells

Q. Arrange these organisms in ascending order based on their size.

1. Organism causing AIDS
2. Organism causing Typhoid
3. PPLO
4. Plant cell

1. 1-2-3-4
2. 1-3-2-4
3. 4-2-3-1
4. 1-3-2-4

Q. In the following options, select the correct match:

1. A-Ribbon shape, B-Zygnema, C-Plate like, D-Chara
2. A-Star shape, B-Chara, C-Ribbon shape, D-Oedogonium
3. A-Spiral, B-Chlamydomonas, C-Girdle Shape, D-Chara
4. A-Girdle shape, B-Oedogonium, C-Star shape, D-Zygnema

Q.

Anaerobic process

1. takes place in yeast during fermentation

2. takes place in the presence of oxygen

3. produces only energy in the muscles of human beings

4. produces ethanol, oxygen and energy

Q.

What is the difference between cytoplasm and cell membrane?

Q. Read the following A to D statements and select the one option that contains both correct statements.

a. Z-line is present in the centre of the light band
b. Thin filaments are firmly attached to the M-line
c. The central part of thick filaments, not overlapped by thin filaments is called Z-band
d. Light band contains only thin filaments

1. a and d
2. b and c
3. a and c
4. b and d

Q. The biggest living single cell

1. Ostrich egg
2. Human cell
   
3. Mycoplasma
4. None of the above

Q.

The size of a cell is measured in___________.

1. mm

2. cm

3. µ

4. none of these

Q. What do prokaryotic cells lack?

1. Cell membrane
2. Cytoplasm
3. Cell wall
4. membrane-bound nucleus

Q. Which among the following is a flagellated animal cell?

1. Egg
2. Sperm
3. Cells of the intestine
4. Animal cells are devoid of cilia and flagella

Q.

Explain the term homeothermy with an example.

Q. Electron microscope was invented by

1. Robert Hooke
2. Knoll and Ruska
3. Pasteur
4. Schwann and Schleiden

Q. Lysosomes are absent in which animal cells

1. Erythrocytes
2. Plasma cells
3. Nerve cells
4. Muscle cells

Q. Independent assortment is absent in case of:

1. Genes located on the same chromosome
2. Genes located on homologous chromosomes
3. Genes located on non-homologous chromosomes
4. All of the above

Q. Study of cell structure under microscope is

1. Cytology
2. histology
3. Cytochemistry
4. Microanatomy.

Q.

The pineal body is considered as

1. an endocrine gland

2. an organ concerned with voluntary actions

3. an organ concerned with vision

4. a vestige of third eye and endocrine gland

Q. The site of photosynthesis in blue - green algae is

1. flagella
2. chloroplast
3. plasmids
4. chromatophores

Q. Cell sap is

1. The living content of the cell
2. Nonliving content of the vacuole
3. Nonliving content of the protoplasm
4. Living content of the Cytoplasm

Q. In the following options, select the correct match:

1. A-Ribbon shape, B-Zygnema, C-Plate like, D-Chara
2. A-Star shape, B-Chara, C-Ribbon shape, D-Oedogonium
3. A-Spiral, B-Chlamydomonas, C-Girdle Shape, D-Chara
4. A-Girdle shape, B-Oedogonium, C-Star shape, D-Zygnema

Q. Which of the following does not occur in anaphase-I but occurs in anaphase-II?

1. Splitting of centromere
2. Condensation of chromosomes
3. Poleward movement of chromosome
4. Contaction of spindle fibres

Q. Study of cells in all aspects is

1. Cytotaxonomy
2. Cytology
3. Cell Biology
4. Cytochemistry.

Q. Nucleolus was discovered by

1. Fontana
2. schwann
3. Brown
4. Robert Hooke

Q. Arrange the following organisms in a correct sequence based on their formation during the course of evolution
(A) Chemoautotrophic organisms (B) Eukaryotes
(C) Anaerobic heterotrophs (D) Oxygenic autotrophic organisms

1. C A B D
2. A B C D
3. C A D B
4. B A C D

Q. The smallest known cell is

1. Virus
2. Bacteria
3. Diatoms
4. Mycoplasma

Q.

Explain prokaryotic cells with the help of a neat sketch.