Revision DPP - 08-Oct-24

1.

Which of the following statements is not correct with respect to the epithelial tissue?
1. It covers the external surface of the body and internal surface of many organs.
2. The neighbouring cells are held together by cell junctions and there is very little extra cellular material.
3. The epithelial cells rest on a cellular basement membrane that separates it from underlaying connective tissue.
4. There is no blood vessel supplying the nutrients to the epithelial cells.

2.

Equivalent resistance across terminals $A$ and $B$ will be:

1.	$1~\Omega$	2.	$2~\Omega$
3.	$3~\Omega$	4.	$4~\Omega$

3.

A wire has a resistance of 6 Ω. It is cut into two parts and both half values are connected in parallel. The new resistance is :
1. 12 Ω
2. 1.5 Ω
3. 3 Ω
4. 6 Ω

4.

Epithelial tissue is characterized by each of these traits, except that ____________.

1.	it lacks blood vessels
2.	it functions in secretion, absorption, and excretion
3.	epithelial cells are loosely packed and have much intercellular material
4.	it is anchored to a basement membrane

5.

Which of the following are the functions of cytoskeleton?
1. mechanical support
2. motility
3. maintenance of the shape of the cell
4. all of the above

6.

The spherical structures present in the nculeoplasm

1.	Has contents continuous with rest of the ncueloplasm.
2.	Is a membrane bound structure.
3.	Is a site of active messenger RNA synthesis.
4.	Are smaller and more numerous in cells actively carrying out protein synthesis.

7.

The air sacs in the lungs are comprised of
_____ cells.
1. simple squamous
2. simple columnar
3. simple cuboidal
4. transitional

8.

Reserve materials in prokaryotic cells are stored in the cytoplasm in the form of:
1. Non-membrane bound lysosomes
2. Gas vacuoles
3. Chromatophores
4. Inclusion bodies

9.

In the circuit, wire $1$ is of negligible resistance. Then:

1.	current will flow through wire $1$ if $E _{1}\neq E _{2}$
2.	current will flow through wire $1$ if $\dfrac{E _{1}}{R_{1}}\neq \dfrac{E _{2}}{R_{2}}$
3.	current will flow through wire $1$ if $(E_{1} +E _{2})\left ( R_{1}+R_{2} \right )\neq (E_{1} -E _{2})\left ( R_{1}-R_{2} \right )$
4.	no current will flow through wire $1$

10.

Which of the following is essentially a modified centriole?

1.	Cilium	2.	Flagellum
3.	Basal body	4.	Centromere

11.

The potential difference $(V_{A} - V_{B})$ between points A and B in the given figure is if the current is flowing from A to B:

(1) - 3 V
(2) +3 V
(3) +6 V
(4) +9 V

12.

All the following can be seen in a typical plant cell except:

1.	Lysosomes	2.	Glyoxysomes
3.	Centrosomes	4.	Chromosomes

13.

Organ system is

(1) Two organs coming together for performing a specific function
(2) Two or more organs coming together for performing a specific function
(3) Two and more organs coming together to perform a common function by means of physical or chemical interactions.
(4) More than one tissue make organ

14.

Pseudostratified nonciliated columnar epithelium tissue is found in
(1) Urethra of male
(2) Linning of trachea
(3) Epididymis
(4) Proximal tubules of kidney

15.

Which of the following statements are correct?

a.	The rough endoplasmic reticulum is frequently observed in the cells actively involved in protein synthesis.
b.	Proteins that are to be used outside the cell are synthesized on free ribosomes.
c.	In the eukaryotic cell there is an extensive compartmentalization of cytoplasm through the presence of membrane-bound organelles
d.	ER is found prominently in human eggs and sperms.

1. All are correct
2. b & d
3. a, b & d
4. a & c

16.

Which of the following statement is not related to centriole?

1.	Made up of nine evenly spaced peripheral fibrils of tubulin protein.
2.	It gives rise to spindle fibres in plant cells.
3.	The central part of the proximal region is called the hub.
4.	It forms the basal body of eukaryotic flagella.

17.

In the equilibrium, 2A(g) ⇌ 2B(g) + C $_{2}$ (g) the equilibrium concentrations of A, B
and C $_{2}$ at 400 K are 1 × 10 $^{- 4}$ M, 2.0 × 10 $^{- 3}$ M, 1.5 × 10 $^{- 4}$ M respectively. The
value of K $_{C}$ for the equilibrium at 400 K is
1. 0.06
2. 0.09
3. 0.62
4. 3 × 10 $^{- 2}$

18.

Match the following:

	Column-I		Column-II
a.	Squamous epithelium	(i)	Lining of intestine
b.	Cuboidal epithelium	(ii)	Ovary
c.	Columnar epithelium	(iii)	Blood vessels
d.	Ciliated epithelium	(iv)	Bronchioles

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

19.

The cells lining the blood vessels belongs to the
category of :
1. Connective tissue
2. Smooth muscle tissue
3. Squamous epithelium
4. Columnar epithelium

20.

Figure (i) and figure (ii) both are showing the variation of resistivity $(\rho)$ with a temperature $(T)$ for some materials. Identify the type of these materials.

1. Conductor and semiconductor
2. Conductor and Insulator
3. Insulator and semiconductor
4. Both are conductors

21.

The site of active ribosomal-RNA synthesis is
1. Nucleolus
2. Cytoplasm
3. Ribosomee
4. RER

22. Identify the incorrect statement:

1.	Arrangement of axonemal microtubules in cilia and flagella is described as 9 + 2
2.	Arrangement of microtubules in centriole is described as 9 + 0
3.	Centrosome is involved in spindle formation in plant cell division
4.	Centrioles form the basal body of cilia and flagella

23.

For the reaction $3 \mathrm{O}_{2}(\mathrm{~g}) \rightleftharpoons 2 \mathrm{O}_{3}(\mathrm{g}) $ at 298 K, $\text K_c$ is found to be $3.0 \times 10^{-59} $. If the concentration of $\text O_2$ at equilibrium is 0.040 M, then the concentration of $\text O_3 $ in M is:
1. $1.2 \times 10^{21} $
2. $4.38 \times 10^{-32} $
3. $1.9 \times 10^{-63} $
4. $2.4 \times 10^{31} $

24. There are two wires A and B made of same material, but length of B is double that of A and cross-section of B is four times that of A. The ratio of resistivity $\rho_A/\rho_B$ will be
1. 4
2. 2
3. 1
4. 1/8

25.

A wire of length $L$ and cross-sectional area $A$ has a resistance $R.$ When a voltage $V$ is applied across its ends, it carries a current $I.$ The wire is then melted and reshaped such that its length is doubled. If the same voltage $V$ is applied across the newly drawn wire, which of the following statements is correct?

1.	The resistance of the wire becomes $\dfrac{R}{4}.$
2.	The resistance of the wire becomes $2R.$
3.	The current in the wire becomes $2I.$
4.	The current in the wire becomes $\dfrac{I}{4}.$

26. PCT and DCT of a nephron are respectively lined with:

1.	Columnar brush-bordered epithelium and simple cuboidal epithelium
2.	Cuboidal brush-bordered epithelium and simple cuboidal epithelium
3.	Cuboidal brush-bordered epithelium and simple columnar epithelium
4.	Columnar brush-bordered epithelium and simple columnar epithelium

27. Match List I with List II.

	List I		List II
A.	Mast cells	I.	Ciliated epithelium
B.	Inner surface of bronchiole	II.	Areolar connective tissue
C.	Blood	III.	Cuboidal epithelium
D.	Tubular parts of nephron	IV.	specialised connective tissue

Choose the correct answer from the options given below:

Options:	A	B	C	D
1.	III	IV	II	I
2.	I	II	IV	III
3.	II	III	I	IV
4.	II	I	IV	III

28. The tissue that lines external and internal surfaces of parts of body in animals is
1. Connective
2. Muscular
3. Nervous
4. Epithelial

29.

Assertion (A):	In the reaction, $H_2~ (g) +~I_2~(g) \rightleftharpoons 2HI~(g)$ , equilibrium constants $K_p$ and $K_c$ are equal.
Reason (R):	$K_p$ of all gaseous reactions is equal to $K_c.$

In light of the above statements choose answer from the options given below:

1.	Both (A) and (R) are True and (R) is the correct explanation of (A).
2.	Both (A) and (R) are True but (R) is not the correct explanation of (A).
3.	(A) is True but (R) is False
4.	Both (A) and (R) are False.

30. At constant temperature, the equilibrium constant ($K_p$) for the decomposition reaction$\mathrm{N}_2 \mathrm{O}_4 \rightleftharpoons 2 \mathrm{NO}_2$
is expressed by $K_p$=$\left(4 x^2 P\right) /\left(1-x^2\right) ~$, where $P$ = pressure, $x$ = extent of decomposition. Which one of the following statements is true?
1. $K_p$ increases with increase of $P$
2. $K_p$ increases with increase of $x$
3. $K_p$ increases with decrease of $x$
4. $K_p$ remains constant with change in $P$ and $x$

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1.	current will flow through wire \(1\) if \(E _{1}\neq E _{2}\)
2.	current will flow through wire \(1\) if \(\dfrac{E _{1}}{R_{1}}\neq \dfrac{E _{2}}{R_{2}}\)
3.	current will flow through wire \(1\) if \((E_{1} +E _{2})\left ( R_{1}+R_{2} \right )\neq (E_{1} -E _{2})\left ( R_{1}-R_{2} \right )\)
4.	no current will flow through wire \(1\)

1.	The resistance of the wire becomes \(\dfrac{R}{4}.\)
2.	The resistance of the wire becomes \(2R.\)
3.	The current in the wire becomes \(2I.\)
4.	The current in the wire becomes \(\dfrac{I}{4}.\)

Assertion (A):	In the reaction, \(H_2~ (g) +~I_2~(g) \rightleftharpoons 2HI~(g)\) , equilibrium constants \(K_p\) and \(K_c\) are equal.
Reason (R):	\(K_p\) of all gaseous reactions is equal to \(K_c.\)

1.	\(1~\Omega\)	2.	\(2~\Omega\)
3.	\(3~\Omega\)	4.	\(4~\Omega\)

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