Correct Answer:
(C)
At the same rate as the heart
Pulse rate is defined as the rate at which our heart beats. It is the number of times our heart beats per minute (bpm). By checking our pulse using a pulse rate chart, we can find out how well our heart is working as our general health and fitness levels.
Ques:
2
Blood is –
Correct Answer:
(A)
Connective tissue
Blood is a connective tissue that has a fluid matrix, called plasma, and no fibres. It flows inside the blood vessels and is viscous thick fluid. The function of blood is to transport oxygen and carbon dioxide. Actually, blood carries away oxygen from lungs towards the body tissues and carries carbon dioxide from there, to take towards lungs.
Ques:
3
Which of the following statements is NOT correct about haemoglobin?
Correct Answer:
(C)
It is slightly acidic
Haemoglobin is the red colored, iron-containing complex protein in the red blood cells that carries oxygen from the lungs to the cells and returns carbon dioxide away from the tissues to the lungs. A healthy individual has 12-16 gms of hemoglobin in every 100 ml of blood. The pH value of hemoglobin solution is between 7.1 to 7.4 and hence, it is slightly alkaline, not acidic.
Ques:
4
Read the following statements in connection with red blood corpuscles and with the help, the code given below find out the correct answer?
They have iron
They provide red colour to the blood
They provide immunity against certain diseases
They are the carrier of oxygen in the blood
Code:
Correct Answer:
(C)
1, 2 and 4
Red blood cells (RBCs) or red blood corpuscles also called erythrocytes are the most common type of blood cell and the vertebrate organism’s principal means of delivering oxygen (O2) to the body tissues–via blood flow through the circulatory system. RBCs take up oxygen in the lungs or gills and release it into tissues while squeezing through the body’s capillaries. The cytoplasm of erythrocytes is rich in haemoglobin, an iron-containing biomolecule that can bind oxygen and is responsible for the red colour of the cells.
Ques:
5
What function does blood perform in the body?
Correct Answer:
(A)
Takes oxygen to all parts
Blood performs many important functions within the body including supply of oxygen to tissues (bound to hemoglobin, which is carried in red cells) and the supply of nutrients such as glucose, amino acids and fatty acids (dissolved in the blood or bound to plasma protein).
Ques:
6
Average blood pressure of a human is –
Correct Answer:
(D)
120/80
The normal average blood pressure of human is 120/80 mm Hg. This means that systolic pressure around 120mm Hg and diastolic pressure should be around 80 mm Hg.
Ques:
7
Blood pressure of four person give belongs–
Mrs. (X) - 90/60
Mr. (X) - 160/120
Mr. (Y) - 120/80
Mrs. (Y) - 140/100
Whose blood/pressure is normal in the following:
Correct Answer:
(D)
Mr. (Y)
Here blood pressure of Mr. (Y) is normal because normal blood pressure in humans is generally 120/80, i.e., systolic pressure 120 and diastolic pressure 80. Blood pressure of Mrs. (X) is less than normal but remaining others have blood pressure more than the normal.
Ques:
8
The blood pressure in our body is –
Correct Answer:
(B)
Greater than the atmospheric pressure
The normal atmospheric pressure is 760 mm of Hg. But the normal human blood pressure is around 120/80 mmHg only. Actually, when a doctor measures our blood pressure the measurement is done with respect to atmospheric pressure. This means that our blood pressure 120mm Hg more than that of atmospheric pressure of that place. On the other hand, atmospheric pressure is measured with respect of vacuum, so the actual blood pressure of our body will be 760+120 = 880 mm Hg with respect to vacuum.
Ques:
9
Consider the following statements:
Assertion (A) : In human body, the liver has an important role in fat digestion.
Reason (R) : Liver produces two important fat- digesting enzymes.
Code:
(A) and (R) are individually true and (R) is the correct explanation of
(A).
Correct Answer:
(C)
is true, but (R) is false.
The liver does not produce fat-digesting enzymes. It detoxifies chemical and metabolizes drugs. The liver has multiple functions such as secretion of bile, storage of fat, synthesis of urea, glycogenesis, gluconeogenesis, and glycogenolysis etc. Although the bile lacks digestive enzymes, yet it plays an important part in the digestion, especially in digestion of fats by bringing about their emulsification.
Ques:
10
Enzyme is a –
Correct Answer:
(C)
Bio-catalyst
Enzymes are biological molecules (proteins) that act as bio- catalysts and helps complex reactions occur in the body. These are basically proteins which accelerate chemical reactions in living systems. Almost all metabolic processes in the cell need enzymes catalysis in order to occur at rates fast enough to sustain life.