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Human Physiology

Description: Test on cell class 11 oriented.
Number of Questions: 15
Created by:
Tags: Cell Human Physiology Cell: Structure and Function Cell:The Unit of Life Digestion and Absorption Digestion Breathing and Respiration Breathing and Exchange of Gases Body Fluids and Circulation
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Primary cell wall is abundant in which of the following?

  1. Cellulose, hemicellulose, pectin and lignin

  2. Cellulose, hemicellulose and pectin

  3. Cellulose, hemicellulose and lignin

  4. Cellulose and hemicellulose

  5. Cellulose only

Show answer
Correct Option: E
Explanation:

This one is correct.

If cell can be compared to a factory, then its enzymes are its __________.

  1. workers

  2. reagents and chemicals

  3. machinery

  4. labour

  5. buliding blocks

Show answer
Correct Option: C
Explanation:

Enzymes are cellular machinery.

Which of the following is not a function of HCl in stomach?

  1. It kills bacteria.

  2. It detoxifies food.

  3. It makes the medium acidic.

  4. It converts pepsinogen to its inactive form pepsin.

  5. It maintains the pH almost 2.

Show answer
Correct Option: D
Explanation:

This is given wrong as it is the opposite. It actives pepsinogen to its active form pepsin.

Which of these regions has/have the highest pH?

  1. Mouth cavity

  2. Stomach

  3. Duodenum

  4. Rectum

  5. All of these

Show answer
Correct Option: C
Explanation:

Duodenum is correct as it is the site where neutralisation of acidic chyme occurs with bicarbonate ions.

Salivary enzyme ptyalin acts on which of these substrates?

  1. Starch

  2. Glucose

  3. Raw starch

  4. Boiled starch

  5. Both 1 and 2

Show answer
Correct Option: D
Explanation:

Ptyalin acts on boiled starch only.

Which of the following is present in mammals that helps in eating and breathing at the same time?

  1. Positive pressure breathing

  2. Negative pressure breathing

  3. Zero pressure breathing

  4. None of the above

  5. All of the above

Show answer
Correct Option: B
Explanation:

This is correct.

Cell fragments of megakaryocytes yield which of the following?

  1. Platelets

  2. Leucocytes

  3. Erythrocytes

  4. Granulocytes

  5. Agranulocytes

Show answer
Correct Option: A
Explanation:

Cell fragments of megakaryocytes yield platelets.

Which of the following is a motor nerve?

  1. Hypoglossal

  2. Vagus

  3. Facial

  4. Olfactory

  5. None of these

Show answer
Correct Option: A
Explanation:

Hypoglossal is a motor nerve.

Blood group is due to ____________.

  1. specific antigens on WBCs

  2. specific antibodies on RBCs

  3. specific antigens on RBCs

  4. specific antigens on platelets

  5. specific antibodies on platelets

Show answer
Correct Option: C
Explanation:

This is correct as blood group is due to antigens on RBC surface.

Which of the following are secreted by the anterior lobe of pituitary gland?

  1. ACTH, ADH, and TSH

  2. STH, ADH, and dopamine

  3. TSH and ACh

  4. GH and ADH

  5. FSH, GH and LH

Show answer
Correct Option: E
Explanation:

This combination is correct.

Which one is a component of urea cycle?

  1. Arginine and citrulline

  2. Glycine and methionine

  3. Acetic acid and urea

  4. Valine and cystine

  5. Urea only

Show answer
Correct Option: A
Explanation:

These are the intermediates in the urea cycle.

Which one is wrongly matched?

  1. Myxoedema - Swollen facial tissue

  2. Cretinism - Mentally retarded

  3. Grave's disease - Exophthalmic goitre

  4. Insulin - Raised blood sugar

  5. Thymus - Immunity

Show answer
Correct Option: D
Explanation:

This is wrong as insulin helps to reduce blood sugar and not raise it. Hence, this option is a mismatch.

ADH takes part in____________________.

  1. increasing the water in urine

  2. sodium reabsorption

  3. reduction in the formation of carbon dioxide

  4. slowing down the walking

  5. water absorption in urine

Show answer
Correct Option: E
Explanation:

ADH (Anti diuretic hormone) has this function which gives it its name.

Muscle lactic acid is converted into glycogen by which of these cycles?

  1. Cori cycle

  2. Krebs cycle

  3. Glyco-lactic cycle

  4. None of these

  5. Both 1 and 2

Show answer
Correct Option: A
Explanation:

This cycle is named Cori cycle after its discoveror.

Maximum transport of oxygen and carbon dioxide occurs by________________, respectively.

  1. Platelets and leucocytes

  2. RBCs and WBCs

  3. WBCs and plasma

  4. RBC's and plasma

  5. Plasma and RBCs

Show answer
Correct Option: D
Explanation:

This is correct. RBCs carry oxygen oxyhaemoglobin and plasma carries carbon dioxide as bicarbonate ions.

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