Free MCQs & Online Quiz Practice for Exams

Q: The attachment of two subunits of ribosomes along mRNA is controlled by: (Entry test 2009)

A) Sodium ions

B) Calcium ions

C) Potassium ions

D) Magnesium ions

Q: Proper arrangement of layers in plants cell wall from inside to outward is: (Entry test 2009)

A) Primary wall-secondary-wall-middle lamella

B) Secondary wall-primary wall-middle lamella

C) Primary wall-middle lamella-secondary wall

D) Primary wall-middle lamella-secondary wall

Q: Breaking down of hydrogen peroxide into oxygen and water is carried out by: (Entry test 2009)

A) Peroxisomes

B) Glyoxisomes

C) Lysosomes

D) Mitochondria

Q: The size of ribosomes in a prokaryotic cell is: (Entry test 2009)

A) 40S

B) 60S

C) 70S

D) 80S

Q: All cell membranes are composed of: (Entry test 2010)

A) Proteins

B) Lipids

C) Lipoproteins

D) Cellulose

Q: Fatty acid is converted into carbohydrates by: (Entry test 2010)

A) Glyoxisomes

B) Bile juice

C) Pancreatic juice

D) Lysosomes

Q: During inspiration the: (Entry test 2005)

A) Chest wall is raised and diaphragm is lowered

B) Chest wall is raised and diaphragm is also raised

C) Chest wall is lowered and diaphragm is raised

D) Chest wall is lowered and diaphragm is also raised

Q: The cartilage present in trachea is: (Entry test 2007)

A) Fibrous

B) Hyaline

C) Elastic

D) Calcified

Q: Alveoli are absent in: (Entry test 2009)

A) Fishes

B) Amphibians

C) Birds

D) Mammals

Q: A coiled hemoglobin is called: (Entry test 2009)

A) Haemocyanin

B) Hemoprotein

C) Myoglobin

D) Hemorrhoids

Q: The center of porphyrin in the head region of hemoglobin is occupied by: (Entry test 2010)

A) Iron

B) Magnesium

C) Sodium

D) Potassium

Q: Rhythmicity of respiration is maintained by: (Entry test 2010)

A) Cardiac center

B) Pons

C) Ventilation center

D) Carotid sinus

Q: Smaller the animal: (Entry test 2010)

A) More the rate of respiration

B) Less the rate of respiration

C) Rate of respiration has nothing to do with size of animal

D) None of these

Q: The rate of breathing of a child of 5 years is about: (Entry test 2011)

A) 44 times/minute

B) 40 times/minute

C) 25 times/minute

D) 20 times/minute

Q: Myoglobin combines with: (Entry test 2012)

A) Four oxygen molecules

B) Three oxygen molecules

C) Two oxygen molecules

D) One oxygen molecule

Q: Following nasal passages are composed of cartilage except: (Entry test 2012)

A) Trachea

B) Bronchus

C) Bronchioles

D) Tracheoles

Q: A single molecule of hemoglobin is composed of: (Entry test 2013)

A) Three polypeptide chains

B) Four polypeptide chains

C) Five polypeptide chains

D) Six polypeptide chains

Q: Myoglobin is found in: (Entry test 2013)

A) Bone

B) Connective tissue

C) Muscles

D) Cartilage

Q: The oxygen carrying capacity of hemoglobin in humans when blood is 100% oxygenated is: (Entry test 2014)

A) 19.4 mL

B) 19.6 mL

C) 20 mL

D) 22 mL

Q: Which of the following ions play an important role in the transport of carbon dioxide? (Entry test 2014)

A) Sodium

B) Potassium

C) Bicarbonate

D) Chloride