biology Mcqs
1251. If the number of chromosomes in most body cells of a mammal is 40, the cells in the seminiferous tubule will have___________?
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A. 20 chromosomes

B. While some other will have 20

C. 10 chromosomes

D. 40 chromosomes

1252. Which area of the brain does mathematical process occur?
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A. The left parietal lobe

B. Mid brain

C. The right parietal lobe

D. cerebrum

1253. Typhoid is caused by_________?
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A. None of the above

B. Hepatatis

C. Bacillus

D. Salmonella typhi
1254. Which of the following is a disease caused by deficiency of protein in children?
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A. Pellagra

B. Rickets

C. Marasmus

D. Beri-Beri

1255. Which tube joins kidneys and bladder?
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A. Suprapubic Tube

B. Inferno Verna Cava

C. Uretar

D. Urethra

1256. Nobel prize to Komberg and Ochoa was given for ________?
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A. One gene one enzyme hypothesis

B. Artificial synthesis of genes

C. Artificial sysnthesis of DNA

D. Chemistry of DNA and RNA

1257. Human blood is a viscous fluid due to_________?
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A. Sodium in serum

B. Proteins in blood

C. Platelets in plasma

D. RBC and WBC in blood

1258. ___________ is a mammal who fly?
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A. Ostrich

B. Peacock

C. Bat

D. None of these

1259. Febries are what kind of cells ?
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A. Chloroplast

B. Sclerenchymatous

C. None of the above

D. Parenchymatous

1260. Pancreas is/are__________?
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A. Endocrine Gland

B. Exocrine Gland

C. All of the above

D. Digestive Gland

1261. What is hibernation and aestivation________?
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A. adaptation of animals to escape from predators

B. hermal adaptation shown by animals

C. wind adaptation shown by animals

D. none of the above

1262. The expected number of RBCs in a single drop, or microliter, of blood is _________ million in Women.
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A. 4.0 to 5.2 million

B. 4.5 to 6.2 million

C. 3.2 to 7.2 million

D. 3.4 to 6.8 million

1263. An adult human normally has______?
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A. >12 molar teeth

B. 6 molar teeth

C. 10 molar teeth

D. 8 molar teeth

1264. Circular disc shaped structure with a round hole is ___________ ?
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A. Horoid coat

B. Ciliary body

C. Iris

D. Pupil

1265. The structure of DNA was proposed by_________?
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A. Watson and Crick

B. William Harvey

C. Charles Darwin

D. Louis Pasture

1266. The term gene was first used by _______?
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A. Lemark

B. Cuvier

C. Johannsen

D. Mendel

1267. The enzyme which is secreted by salivary gland is?
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A. Pepsin

B. Ptyalin

C. Bile

D. Lactalase

1268. The Process of egg formation in the female is called ________?
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A. oogenesis

B. None of these

C. Oviduct

D. oocyte

1269. Who discovered glucose?
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A. Mandel

B. Emil Fischeraf

C. Emil Fischer

D. Anselme Payen

1270. Pus is formed by the dead _____________cells.
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A. Platelets

B. Hemoglobin

C. RBCs

D. White Blood Cells
1271. Tjio and Levans contribution is very significant because they __________ ?
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A. Pointed out mutational changes

B. Detected sex linkage

C. Identified barr bodies

D. Gave the number of human chromosomes
1272. There are about _________ muscles in human beings.
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A. 300

B. 703

C. 650

D. 206

1273. Special kind of protein containing iron is called as _________ ?
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A. White blood cell

B. Hemoglobin

C. Hormones

D. Red blood cell

1274. The number of alveoli in human lungs is estimated to be around:_________?
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A. 800 millions

B. 1 billion

C. 500 millions

D. 150 millions

1275. Which of the following viruses has caused thousands of deaths globally as an emergent virus?
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A. MERS

B. OC43

C. SARS-CoV-2

D. HKUt

1276. Father of genetics?
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A. Darwin

B. Morgan

C. Mendal

D. Aristotle

1277. How many liters of saliva inhale by a Human?
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A. 2 Liter

B. 1 Liter

C. Half Liter

D. 3 Liter

1278. Among the following which one is a diploblastic organism?
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A. Hydra

B. Squids

C. Crabs

D. Earthworm

1279. The number carpels in our feet is__________?
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A. 16

B. 0

C. 14

D. 7

1280. BCG immunisation is for:__________?
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A. None of the above

B. Tuberculosis

C. Leprosy

D. Cancer

1281. The frequency of a character is found to be increasing when __________?
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A. It is dominant

B. It is inheritable

C. It is recessive

D. It is adaptable

1282. More water is reabsorbed in blood due to _________ ?
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A. More anti-diuretic hormone

B. Lesser anti-diuretic hormone

C. Active functioning of pancreas

D. Inactivity of pituitary gland

1283. All are functions of hypothalamus, but, _________ ?
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A. Regulation of sleep and emotions

B. Regulation of blood osmotic pressure

C. Regulation of body temperature

D. Regulation of anti-diuretic hormones
1284. Self pollination is not possible in ________ ?
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A. Dioecious plants

B. Pawpaw

C. Flowers

D. both A andB
1285. Chromatid is _________ ?
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A. One half of chromosome

B. Complete chromosome

C. Haploid chromosome

D. Duplicate chromosome

1286. Serum differs from blood in________?
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A. Lacking globulins

B. Lacking albumins

C. Lacking clotting factors

D. Lacking antibodies

1287. Study of interaction of living organisms with other organisms and their environment relates with ___________ ?
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A. Botany

B. Pharmacology

C. Ecology

D. Social biology

1288. Kind of cellular respiration which occurs in presence of oxygen is _________ ?
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A. Acidic respiration

B. Nitrogenous respiration

C. Aerobic respiration

D. Anaerobic respiration
1289. Which of the following secrete hydrochloric acid in stomach?
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A. Epithelial

B. Oxyntic

C. Goblet

D. Mucosa

1290. What is the number of True Ribs in human body?
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A. 16

B. 18

C. 14

D. 12

1291. How many bones does a baby have_______?
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A. None of these

B. 300

C. 212

D. 206

1292. Leprosy bacillus was invented by :__________?
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A. Fleming

B. Koch

C. Hansen

D. Harvey

1293. What is called movement of cell against concentration gradient ?
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A. Active Transport

B. Osmosis

C. Diffusion

D. Passive Transport

1294. Number of cells that are destroyed in adults by apoptosis are ________ ?
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A. 10 to 20 billion cells

B. 50 to 70 billion cells

C. 15 to 25 billion cells

D. 20 to 35 billion cells

1295. If two opposite alleles come together, one finding morphological expression masking the other, the fact is described as law of _________ ?
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A. Inheritance

B. Segregation

C. Dominance

D. Limiting factor

1296. Which fungus is known as Green Mold ?
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A. Penicillium

B. Mucus

C. Aspergillus

D. None of the above

1297. Banana belongs to which category?
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A. tree

B. grass

C. herb

D. None of these

1298. Blood does not clot in the blood vessels due to the presence of ___________?
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A. Fibrinogen

B. Heparin

C. Thrombin

D. Prothrombin

1299. Human body makes about 20 million erythrocytes in__________?
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A. Two Seconds

B. Three Seconds

C. One Second

D. Four Seconds

1300. A gene is said to be dominant, if _________?
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A. It is never expressed in any condition

B. It is expressed only in heterozygous

C. It expresses its effect only in heterozygous state

D. It is expressed both in heterozygous and heterozygous condition