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JIMPER Biology - Human Physiology Model Question Paper

Biology - Human Physiology

Exam Duration: 45 Mins Total Questions : 30

1 )

Oxygen disoociation curve is

(a)
sigmoid
(b)
parapolic
(c)
hyberpolic
(d)
straight line

2 )

Which of the following bones is characterised by the presence of a diaphyses and epiphyses, articular cartilages and a medullary cavity?

(a)
Scapula
(b)
Sacrum
(c)
Tibia
(d)
Patella

3 )

Which one of thew following is correctly matched pair of the given secretion and its primariy role in human physiology?

(a)
Sebum - sexual attraction
(b)
Sweat - Thermoregulation
(c)
Saliva - tastin food
(d)
Tears - Excretion of salts

4 )

Stellate reticulo-endothelial cells of liver are

(a)
mast cells
(b)
hepatocytes
(c)
Kupfer's cells
(d)
All of these

5 )

Which ones are lophodont?

(a)
Incisors
(b)
Cannines and premolars
(c)
premolars and molars
(d)
Incisors and premolars

6 )

Which of the following is not necessarily a property of all hormones?

(a)
Information carrying
(b)
secreted in low amounts
(c)
Short half-life
(d)
Protein in nature

7 )

Somatostatin

(a)
stimulates glucagon release while inhibits insulin release
(b)
stimulates the release of insulin and glucagon
(c)
inhibits the release of insulin and glucagon
(d)
inhibits glucagon release while stimulates insulin release

8 )

The main function of sympathetic nervous system are

(a)
contraction of skin blood vessels and sudden increase of blood pressurey
(b)
contraction of muscles, secretion of sweat glands and rapid coagulation of blood
(c)
dilation of bronchi, concentration of heart and sudden decrease in the number of RBC in the blood.
(d)
All of the above

9 )

Which one is the spinal nerve?

(a)
Trigeminal
(b)
Hypoglossal
(c)
Olfactory
(d)
None of these

10 )

Never impulses are transmitted across a synapse from the

(a)
Cell body of one neuron to the axon terminal of another
(b)
Dendrites of one neuron to the axon terminal of another
(c)
axon terminal of one neuron to the axon terminal of another
(d)
dendrites of one to cell body of another

11 )

A small finger like projection arising from the caecum is called

(a)
appendix
(b)
trachea
(c)
pylorus
(d)
colon

12 )

The amount of haemoglobin present in 100 ml of blood if a healthy individual is

(a)
less than 10 gms
(b)
20-22 gms
(c)
12-16 gms
(d)
above 25 gms

13 )

Which of the following statements about the striated muscles is incorrect?

(a)
In the centre of each I - band is an elastic fibre (Z-line) which bisects it
(b)
Thin filaments are firmly attached to the Z-line
(c)
M-line is a fibrous membrane in the middle of A-bands
(d)
None of these

14 )

A large quantity of one of the following is removed from our body by lungs.

(a)
CO₂ only
(b)
H₂0 only
(c)
CO₂ and H₂0
(d)
Ammonia

15 )

Assertion: Renal threshold of glucose is said to be 180 mgl1 00 mL.
Reason: Glucose starts appearing in the urine when its blood level exceeds 180 mgl1 00 mL of blood.

(a)
If both assertion and reason are true and reason is the correct explanation of assertion.
(b)
If both assertion and reason are true but reason is not the correct explanation of assertion.
(c)
If assertion is true but reason is false.
(d)
If both assertion and reason are false.

16 )

Assertion: On stimulation, a muscle cell releases calcium ions (Ca2+) from sarcoplasmic reticulum.
Reason : By reacting with a protein complex, Ca²⁺ uncover active sites on the actin filaments.

(a)
If both assertion and reason are true and reason is the correct explanation of assertion
(b)
If both assertion and reason are true but reason is not the correct explanation of assertion.
(c)
If assertion is true but reason is false.
(d)
If both assertion and reason are false.

17 )

Chemicals which are released at the synaptic junction are called

(a)
hormones
(b)
neurotransmitters
(c)
cerebrospinal fluid
(d)
lymph

18 )

Which of the following statements is true about RBCs in humans?

(a)
They carry about 20-25 percent of CO₂.
(b)
They transport 99.5 percent of O₂.
(c)
They transport about 80 percent oxygen only and the rest 20 percent of it is transported in dissolved state in blood plasma.
(d)
They do not carry CO₂ at all

19 )

If the inner surface of the ileum in the human small intestine was smooth, rather than being folded and subdivided into villi, which of the following statements would be true?

(a)
The rate of absorption of digested food molecules would be higher, because the digested food would pass more easily through the digestive tract.
(b)
Digestion would not be as effective, because there would be fewer cells secreting trypsin (a proteindigesting enzyme)
(c)
Humans would have needed to evolve a much longer small intestine to absorb sufficient nutrients from their food
(d)
Humans would not be able to survive, because the digestive tract would be more susceptible to damage.

20 )

In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as :
Assertion : The sight, smell and presence of food in the oral cavity can stimulate secretion of saliva.
Reason : The activities of the gastro-intestinal tract are only under neural control for proper coordination of different parts

(a)
If both assertion and reason are true and reason is the correct explanation of assertion.
(b)
If both assertion and reason are true but reason is not the correct explanation of assertion
(c)
If assertion is true but reason is false.
(d)
If both assertion and reason are false

21 )

Assertion: Emphysema is the permanent abnormal inflation of airspace of terminal bronchioles or alveolar sacs.
Reason: Destruction of pulmonary tissues specially alveolar septa and flattening of alveolar ducts occur in emphysema.

(a)
If both assertion and reason are true and reason is the correct explanation of assertion.
(b)
If both assertion and reason are true but reason is not the correct explanation of assertion.
(c)
If assertion is true but reason is false.
(d)
If both assertion and reason are false.

22 )

Which is the first step of urine formation?

(a)
Ultrafiltration
(b)
Tubular secretion
(c)
Selective secretion
(d)
Tubular reabsorption

23 )

Cranium protects the brain is made up of

(a)
9 bones
(b)
18 bones
(c)
28 bones
(d)
8 bones

24 )

Which one of the following hormones though synthesised elsewhere, is stored and released by the master gland?

(a)
Melanocyte stimulating hormone
(b)
Antidiuretic hormone
(c)
Luteinizing hormone
(d)
Prolactin

25 )

Which factors affect the dissociation of O₂from Hb?

(a)
pH, pO₂, pCO₂ and temperature
(b)
Only pH
(c)
Salinity, temperature and pCO₂
(d)
\({ HCO }_{ 3 }^{ - }\) ions concentration, pH and salinity

26 )

Prothrombin that helps in clotting of blood, is present in

(a)
Blood plasma
(b)
Blood corpuscles
(c)
Blood platelets
(d)
Serum

27 )

Which of the following is not a modification of mucosa of alimentary canal.

(a)
Villi
(b)
Microvilli
(c)
rugae
(d)
Brunner's gland

28 )

The type of muscles present in our

(a)
Thigh are striated and voluntary
(b)
Upper arm are smooth muscle fibres fusiform in shape
(c)
Heart are involuntary and unstriated smooth muscles
(d)
Intestine are striated and involuntary

29 )

Which one of the following statements is incorrect?

(a)
The residual air in lungs slightly decreases the efficiency of respiration in mammals
(b)
The presence of non-respiratory air sacs, increases the efficiency of respiration in birds
(c)
In insects, circulating body fluids serve to distribute oxygen to tissues
(d)
The principle of countercurrent flow facilitates efficient respiration in gills of fishes

30 )

What is true about RBCs in humans?

(a)
They do not carry CO₂ at all
(b)
They carry both CO₂ and O₂
(c)
They transport 99.5 percent of O₂
(d)
They transport about 80 percent oxygen only and the rest 20 percent of it is transported in dissolved state in blood plasma