Tissues Test

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Tissues Test - 90

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Weekly Quiz Competition

Question 1
1 / -0

Which amino acid is mostly observed in blood?

A
glycine

B
alanine

C
methionine

D
cysteine

Solution

As alanine is parental amino acid for all amino acid except glycine, so it's mostly observed in the blood stream.
So, the correct answer is 'alanine'
Question 2
1 / -0

Red blood corpuscles are also known as :

A
RBC

B
WBC

C
Platelets

D
Pulse

Solution

Red Blood Corpuscles are abbreviated as RBC, they are also known as Erythrocytes. These cells are enucleate, contain a protein heamoglobin and perform the function of transporting $$O_2$$ from the lungs to the tissues and a small amount of $$CO_2$$.
So, the correct answer is 'RBC'
Question 3
1 / -0

WBCs are produced in which organ?

A
Bone marrow

B
Spleen

C
Heart

D
Lymph nodes

Solution

WBCs or leukocytes are majorly produced in the red bone marrow while a small amount is produced in the yellow bone marrow.
So, the correct answer is 'Bone marrow'
Question 4
1 / -0

At high altitude, Red blood cells

A
Increase in number

B
increase in size

C
decrease in size

D
Decrease in the number

Solution

At high altitudes, the number of RBCs increases to compensate for the decrease in the level of atmospheric Oxygen.
Question 5
1 / -0

Choose the correct option for the statements given below.
Statement 1 - An osteon consists of a Haversian canal surrounded by concentric lamellae that are interspersed by lacunae containing the osteocytes.
Statement 2 - The spongy bones in Mammals do not contain the osteon.

A
Both statements are incorrect.

B
Both statements are correct and statement 2 is the correct explanation of statement 1.

C
Both statements are correct but statement 2 is not the correct explanation of statement 1.

D
Statement 1 is correct but statement 2 is incorrect.

Solution

The bone has a deposition of hard ground substance rich in calcium salts and collagen fibres.
A Haversian system or the osteon comprises of a Haversian canal that runs along the length of the bone. It encloses bloods vessels and nervous tissue. The Haversian canal is surrounded by the bone matrix which is arranged in the form of concentric rings. The rings are interspersed by cavity or lacunae that contain osteocytes. Two Haversian systems are connected by a Volkmann's canal transversely.
Both Haversian system and Volkmann's canal are absent in in the spongy bone and it is internally made up of trabeculae.
So, the correct answer is 'Both statements are correct but statement 2 is not the correct explanation of statement 1.'
Question 6
1 / -0

Ciliary muscles are contractile structures which

A
Move cilia of some protozoans

B
Keep valves of heart intact

C
Change focal length of human eye and are found at junction of sclera and iris

D
Cause erection of human hairs in cold and are situated in skin

Solution

The ciliary muscle is a circular muscle that relaxes or tightens the zonules to enable the lens to change shape for focusing. It is present between the sclera (white of the eye) and the fine ligaments, that suspend the lens. It is composed of both longitudinal and circular fibres and serves to change the shape of the lens, enabling the eye to focus on near or distant objects.
Thus, the correct answer is option C.
Question 7
1 / -0

Read the statements regarding muscle proteins. Which of the following statement is correct?
(A) Actin is a thin filament and is made up of two F-actins.
(B) The complex protein, tropomyosin is distributed at regular intervals on the troponin.
(C) Myosin is a thick filament, which is also a polymerised protein.
D) The globular head of meromyosin consists of light meromyosin (LMM).

A
(A), (B) and (C) are correct

B
(A), (B) and (D) are correct

C
(A) and (C) are correct

D
(B) and (D) are correct

E
(B), (C) and (D) are correct

Solution

Sarcomere forms the structural and functional unit of striated muscle fibre. Each sarcomere is a bundle of fine longitudinal myofilaments of two types:
1. Primary myofilaments: They are thickened, confined to A- band only and free at both the ends. These are formed of protein myosin. Each myosin is a polymerised protein made of many monomeric proteins called meromyosin. Each meromyosin has two important parts- a globular head with a short arm and a tail, the former is called heavy meromyosin (HMM) and the latter is called (LMM).
2. Secondary myofilaments: They are thinner, occur in I-band only but extend for some distance into A-band. They are composed of protein actin having with it two regulatory proteins: tropomyosin and troponin and are attached to Z-lines on one end and are free at the other. Each actin filament is a polymerised protein made up of two 'F' (fibrous) actin strands helically wound to each other. Each 'F' actin is a polymer of monomeric 'G' (globular) actins. Two filaments of tropomyosin proteins also run along the length of 'F' actins. Also. a complex troponin protein of three globular peptides is distributed at regular intervals on the tropomyosin.
Thus, the correct answer is option C.
Question 8
1 / -0

The cell/s present in the meshwork of areolar tissue is/are

A
Fibroblasts

B
Macrophages

C
Mast cells

D
All of the above

Solution

Areolar tissue is a connective tissue that takes part in the structural framework of the body. It consists of a meshwork of collagen, elastic fibers and reticular fibers with many connective tissue cells in between the meshwork of fibers. Fibroblasts, mast cells, and macrophages are the major cells of the areolar tissue. So, the correct answer is option D.
Question 9
1 / -0

Which one of the following is a matching pair of a certain body feature and its value/count in a normal human adult.

A
Urea 5-10 mg/100ml of blood

B
Blood sugar 80-100 mg/ 100 ml

C
Total blood volume 3-4 litres

D
ESR in Wintrobe method 9-15 mm per hour in males and 20-34 mm per hour in females

Solution

B. Blood sugar 80-100 mg/100 ml
EXPLANATION: For the majority of human, normal blood sugar level is between 80-100 mg/ 100 ml. The blood sugar level after 1-2 hours of eating is less than 140 mg/ 100 ml. Before meal the level of blood sugar is less than 100 mg/ 100 ml.
Hence the correct option is B.
Question 10
1 / -0

In the diagram of multipolar myelinated neuron given above, different parts have been indicated by alphabets. Choose the answers in which these alphabets have been correctly matched with the parts, which they indicate.

A
A- Cell body, B- Nissl bodies, C- Nucleus, D- Dendrites, E- Naked portion of axon, F- Myelin sheath, G- Node of Ranvier

B
A- Cell body, B- Nissl bodies, C- Naked portion of axon, D- Dendrites, E- Nucleus, F- Myelin sheath, G- Node of Ranvier

C
A- Cell body, B- Nissl bodies, C- Naked portion of axon, D- Nucleus, E- Dendrites, F- Myelin sheath, G- Node of Ranvier

D
A- Cell body, B- Nissl bodies, C- Dendrites, D- Nucleus, E- Naked portion of axon, F- Myelin sheath, G- Node of Ranvier

Solution

A neuron is a structural and functional unit of the nervous tissue. It develops from the ectoderm of the embryo. The special properties of the nervous tissue are excitability and conductivity. A neuron consists of the main cell body and cytoplasmic processes arising from it. Neurons consist of the cell body, Nissl bodies, Dendrites, Node of Ranvier, Nucleus, a naked portion of an axon, Myelin sheath.
The option in which the parts are correctly matched with the alphabets is D.

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Tissues Test - 90

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Tissues Test - 90

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SHARING IS CARING

Question 1

glycine

alanine

methionine

cysteine

Solution

Question 2

RBC

WBC

Platelets

Pulse

Solution

Question 3

Bone marrow

Spleen

Heart

Lymph nodes

Solution

Question 4

Increase in number

increase in size

decrease in size

Decrease in the number

Solution

Question 5

Both statements are incorrect.

Both statements are correct and statement 2 is the correct explanation of statement 1.

Both statements are correct but statement 2 is not the correct explanation of statement 1.

Statement 1 is correct but statement 2 is incorrect.

Solution

Question 6

Move cilia of some protozoans

Keep valves of heart intact

Change focal length of human eye and are found at junction of sclera and iris

Cause erection of human hairs in cold and are situated in skin

Solution

Question 7

(A), (B) and (C) are correct

(A), (B) and (D) are correct

(A) and (C) are correct

(B) and (D) are correct

(B), (C) and (D) are correct

Solution

Question 8

Fibroblasts

Macrophages

Mast cells

All of the above

Solution

Question 9

Urea 5-10 mg/100ml of blood

Blood sugar 80-100 mg/ 100 ml

Total blood volume 3-4 litres

ESR in Wintrobe method 9-15 mm per hour in males and 20-34 mm per hour in females

Solution

Question 10

A- Cell body, B- Nissl bodies, C- Nucleus, D- Dendrites, E- Naked portion of axon, F- Myelin sheath, G- Node of Ranvier

A- Cell body, B- Nissl bodies, C- Naked portion of axon, D- Dendrites, E- Nucleus, F- Myelin sheath, G- Node of Ranvier

A- Cell body, B- Nissl bodies, C- Naked portion of axon, D- Nucleus, E- Dendrites, F- Myelin sheath, G- Node of Ranvier

A- Cell body, B- Nissl bodies, C- Dendrites, D- Nucleus, E- Naked portion of axon, F- Myelin sheath, G- Node of Ranvier

Solution

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