Practice Questions for NEET Biology. We covered all the Practice Questions for NEET Biology in this post for free so that you can practice well for the exam.
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MCQ on NEET Biology for Students
Which of the following statement is INCORRECT?
(A) HCI provides the alkaline pH optimal for pepsins.
(B) About 30% of the starch is hydrolyzed by salivary amylase.
(C) Intrinsic factor is essential for the absorption of vitamin B12.
(D) Chyme is partly digested food that moves from the stomach to the small intestine.
Option a – HCI provides the alkaline pH optimal for pepsins
Read the following statements and select the correct option. Statement I: Break down of biomacromolecules occurs in the duodenum region of the small intestine. Statement II: The simple substances formed after digestion are absorbed in the jejunum and ileum regions of the large intestine.
(A) Statement I is correct and II is incorrect.
(B) Statement I is incorrect and II is correct.
(C) Both Statements I and II are correct.
(D) Both Statements I and II are incorrect.
Option a – Statement I is correct and II is incorrect.
The hormone produced by the atria of the heart which is involved in the regulation of kidney function is
(A) Aldosterone
(B) Angiotensin
(C) Renin
(D) Atrial Natriuretic Factor
Option d – Atrial Natriuretic Factor
Before defaecation, the faecal matter is temporarily stored in
(A) ileum
(B) caecum
(C) jejunum
(D) rectum
Option d – rectum
The hairpin-shaped part next to the proximal convoluted tubule is
(A) Renal corpuscle
(B) Collecting duct
(C) Distal convoluted tubule
(D) Henle’s loop
Option d – Henle’s loop
The physiological value of fats is
(A) 2.5 kcal/gm
(B) 4.1 kcal/gm
(C) 5.65 kcal/gm
(D) 9.0 kcal/gm
Option d – 9.0 kcal/gm
Read the following statements and select the correct option. i. Gastro-oesophageal sphincter regulates the opening of oesophagus into the stomach. ii. The descending colon opens into the duodenum. iii. The stomach is located in the upper right portion of the abdominal cavity. iv. The caecum is a small blind sac that hosts some symbiotic microorganisms.
(A) Statements i and iii are incorrect
(B) Statements ii and iii are correct
(C) Statements i and iv are correct
(D) Statements ii and iv are incorrect
Option c – Statements i and iv are correct
Read the statements given below and select the correct option. Statement I: PCT helps in maintaining the pH and ionic balance of the body fluids. Statement II: Conditional reabsorption of Na and water takes place in DCT.
(A) Statement I is correct and II is incorrect.
(B) Statement I is incorrect and II is correct.
(C) Both Statements I and II are correct.
(D) Both Statements I and II are incorrect.
Option c – Both Statements I and II are correct.
In an electrocardiogram, the QRS complex represents
(A) atrial depolarization
(B) ventricular depolarization
(C) ventricular repolarization
(D) relaxation of ventricles
Option b – ventricular depolarization
The proenzyme pepsinogen and mucous are secreted by ………. of gastric glands. respectively
(A) peptic cells and mucus neck cells
(B) oxyntic cells and peptic cells
(C) mucus neck cells and parietal cells
(D) parietal cells and chief cells
Option a – peptic cells and mucus neck cells
A fall in GFR activates JG cells to release
(A) pepsin
(B) trypsin
(C) renin
(D) enterokinase
Option c – renin
Read the following statements and select the correct option. Statement I: Thrombin converts fibrinogen into fibrin. Statement II: Thrombokinase converts prothrombin into active thrombin.
(A) Statement I is correct and II is incorrect.
(B) Statement I is incorrect and II is correct.
(C) Both Statements I and II are correct.
(D) Both Statements I and II are incorrect.
Option c – Both Statements I and II are correct.
Select the INCORRECT statement from the following.
(A) Maltase converts maltose into glucose and fructose
(B) Lactase converts lactose into glucose and galactose
(C) Sucrase converts sucrose into glucose and
(D) fructose Nucleosidases convert nucleosides into sugars and bases
Option a – Maltase converts maltose into glucose and fructose
The proximal convoluted tubule is lined by ……… brush border epithelium, which increases the surface area for reabsorption.
(A) simple cuboidal
(B) compound ciliated
(C) simple glandular
(D) compound columnar
Option a – simple cuboidal
A closed circulatory system is found in
(A) crabs
(B) octopus
(C) cockroach
(D) earthworms
Option d – earthworms
Structure ‘X’ is a digestive gland. It is both an endocrine and an exocrine gland. It is situated in the limbs of the ‘C’ shaped duodenum. Identify the structure ‘X’ and select the correct option.
(A) Pancreas
(B) Small intestine
(C) Liver
(D) Stomach
Option a – Pancreas
Urine is stored in ……… till a voluntary signal from CNS is given for its release.
(A) ureter
(B) urinary bladder
(C) urethra
(D) renal corpuscle
Option b – urinary bladder
Read the following statements and select the correct option. Statement I: Small amounts of lipases are secreted by gastric glands. Statement II: Gastric glands are located in the mucosa of the stomach.
(A) Statement I is correct and II is incorrect.
(B) Statement I is incorrect and II is correct.
(C) Both Statements I and II are correct.
(D) Both Statements I and II are incorrect.
Option c – Both Statements I and II are correct.
Pick out the INCORRECT statement.
(A) An adult human excretes 1.5 liters of urine on average per day.
(B) Around 50% of the filtrate is reabsorbed by the renal tubules.
(C) 70-80% of the electrolytes and water are reabsorbed in the proximal convoluted tubule.
(D) The glomerular filtration rate in a healthy individual is 180 liters per day.
Option d – The glomerular filtration rate in a healthy individual is 180 liters per day.
The course of blood flow in the systemic circulation is
(A) left ventricle to the right atrium through the aorta
(B) right ventricle to left auricle through the aortic arch
(C) left atrium to the right atrium through the vena cava
(D) right ventricle to left ventricle through vena cava
Option a – left ventricle to the right atrium through the aorta
Which of the following is TRUE with respect to Marasmus? ( Practice Questions for NEET Biology )
(A) It is commonly found in adolescents.
(B) In this skin becomes dry, thin, and wrinkled.
(C) It is caused due to deficiency of vitamins in the diet.
(D) It shows an abnormal increase in growth rate and body weight.
Option b – In this skin becomes dry, thin, and wrinkled.
Which of the following cells are arranged in an intricate manner in Bowman’s capsule to form filtration slits?
(A) Megakaryocytes
(B) Podocytes
(C) Oxyntic cells
(D) Goblet cells
Option b – Podocytes
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