biology MCQs - 10th class Chapter 09 Mcqs

1

Pharmacology is the study of drug composition, properties, and what else?

A

Manufacturing processes

B

Medical applications

C

Marketing strategies

D

Legal regulations

2

Any substance that, when absorbed, alters normal body function is known as a?

A

Nutrient

B

Food

C

Drug

D

Supplement

3

Until 1890, the subject of pharmacology was known as?

A

Materia Medica

B

Biomedical Science

C

Apothecary

D

Clinical Studies

4

Which of the following is an example of a non-prescription drug?

A

Barbiturates

B

Tranquillizers

C

Antibiotics

D

Aspirin

5

Drugs that do not occur naturally and are synthesized in a laboratory are called?

A

Herbal Drugs

B

Organic Drugs

C

Synthetic Drugs

D

Mineral Drugs

6

The antibiotic penicillin is obtained from a?

A

Plant

B

Bacterium

C

Fungus

D

Mineral

7

The cardiotonic drug digitalis, used to stimulate the heart, is made from the leaves of which plant?

A

Opium Poppy

B

Foxglove

C

Cannabis Sativa

D

Cactus

8

The pain reliever morphine is made from the juice of which plant?

A

Foxglove

B

Cannabis

C

Coca Plant

D

Opium poppy plant

9

Drugs obtained from animals are usually their?

A

Muscular tissues

B

Bone marrow

C

Glandular products

D

Nervous tissues

10

The mineral iodine is used in making tincture of iodine to?

A

Stop bleeding

B

Reduce pain

C

Prevent infection

D

Induce sedation

11

What is the powder form of silver nitrate applied on wounds for?

A

To reduce pain

B

To clean the wound

C

To stop bleeding and prevent infection

D

To reduce swelling

12

The antibiotic streptomycin is obtained from?

A

Fungi

B

Plants

C

Animals

D

Bacteria

13

Which category of drugs, like aspirin and paracetamol, is used to reduce pain?

A

Sedatives

B

Analgesics

C

Antibiotics

D

Vaccines

14

Which drugs are used to induce sedation by reducing irritability or excitement?

A

Analgesics

B

Antibiotics

C

Sedatives

D

Vaccines

15

Vaccines are used to develop immunity against which types of infections?

A

Fungal and protozoan

B

Viral and bacterial

C

Only bacterial

D

Only viral

16

What do antiseptics do?

A

Destroy microorganisms on non-living objects

B

Inhibit or kill bacteria within the body

C

Reduce the possibility of infections on skin

D

Reduce pain

17

Which substances destroy microorganisms found on non-living objects?

A

Antiseptics

B

Antibiotics

C

Analgesics

D

Disinfectants

18

Who introduced carbolic acid to sterilise surgical instruments?

A

Alexander Flemming

B

Edward Jenner

C

Joseph Lister

D

Louis Pasteur

19

Who discovered the antibiotic penicillin from the fungus Penicillium notatum?

A

Joseph Lister

B

Alexander Flemming

C

Robert Koch

D

Edward Jenner

20

Sedative drugs interact with the central nervous system to __________ its activities.

A

stimulate

B

enhance

C

depress

D

have no effect on

21

Long-term use of sedative drugs can induce?

A

High energy

B

Euphoria

C

Suicidal thoughts

D

Improved memory

22

Narcotics like morphine and codeine are derived from?

A

Cactus

B

Foxglove plant

C

Opium

D

Cannabis plant

23

The most commonly abused narcotic, which is a semi-synthetic drug from morphine, is?

A

Codeine

B

Cocaine

C

Heroin

D

Marijuana

24

Which group of drugs causes changes in perception, thought, emotion, and consciousness?

A

Analgesics

B

Sedatives

C

Narcotics

D

Hallucinogens

25

The hallucinogen mescaline comes from a?

A

Mushroom

B

Cactus

C

Flower

D

Leaf

26

The hallucinogen psilocin comes from a?

A

Cactus

B

Plant root

C

Mushroom

D

Tree bark

27

Physiologically, hallucinogens cause a?

A

Decrease in blood pressure

B

Constriction of pupils

C

Rise in blood pressure

D

Slowing of heart rate

28

Marijuana is obtained from the flowers, stems, and leaves of which plant?

A

Papaver somniferum

B

Digitalis purpurea

C

Cannabis sativa

D

Atropa belladonna

29

High doses of marijuana can lead to?

A

Decreased heart rate

B

Improved short-term memory

C

Increased heart rate

D

Lower blood pressure

30

An antibiotic that kills bacteria is known as?

A

Bacteriostatic

B

Bactericidal

C

Antiviral

D

Antifungal

31

An antibiotic that stops the growth of bacteria is known as?

A

Bactericidal

B

Antiseptic

C

Bacteriostatic

D

Disinfectant

32

Cephalosporins interfere with the synthesis of the bacterial __________.

A

cell membrane

B

DNA

C

cell wall

D

proteins

33

Which type of antibiotics are Cephalosporins?

A

Bacteriostatic

B

Narrow-spectrum

C

Bactericidal

D

Antiviral

34

Tetracyclines inhibit the synthesis of what in bacteria?

A

Cell wall

B

Folic acid

C

DNA

D

Protein

35

Tetracyclines are not used in children under the age of?

A

12

B

10

C

8

D

15

36

Sulpha drugs are synthetic antibiotics that inhibit the synthesis of what in bacteria?

A

Protein

B

Folic acid

C

Cell wall

D

RNA

37

The ability of bacteria to not be affected by commonly used antibiotics is called?

A

Vaccination

B

Antibiotic resistance

C

Sedation

D

Allergy

38

A vaccine is a material containing weakened or __________ pathogens.

A

strengthened

B

killed

C

mutated

D

synthetic

39

Who is credited with developing the world's first vaccination for smallpox?

A

Alexander Flemming

B

Louis Pasteur

C

Joseph Lister

D

Edward Jenner

40

Special proteins found on pathogens that stimulate an immune response are called?

A

Antibodies

B

Antigens

C

Lymphocytes

D

Hormones

41

In response to antigens, the host's body synthesizes proteins called?

A

Antigens

B

Pathogens

C

Antibodies

D

Toxins

42

Which white blood cells are stimulated by a vaccine to produce antibodies?

A

T-lymphocytes

B

Neutrophils

C

B-lymphocytes

D

Macrophages

43

What is the most common method of administering vaccines?

A

Nasal spray

B

Orally

C

By injection

D

Topical cream

44

Why are 'booster shots' necessary for some vaccines like tetanus?

A

They provide nutrients

B

They cure the disease instantly

C

They do not provide lifetime immunity

D

They are less painful

45

Heroin is prescribed in some western countries under what name?

A

Morphine

B

Codeine

C

Diamorphine

D

Oxycodone

46

The compulsion for a narcotic drug can make an addict a?

A

Law violator and criminal

B

Better citizen

C

Healthier person

D

More social person

47

Expired drugs can cause damage to which organs?

A

Lungs

B

Heart

C

Liver

D

Kidneys

48

Which of these is NOT a source of drugs mentioned in the text?

A

Plants and Fungi

B

Animals

C

Seawater

D

Minerals

49

The text states that morphine acts directly on the __________ to relieve pain.

A

muscles

B

central nervous system

C

peripheral nerves

D

skin receptors

50

According to the text, which is one of the most commonly used drugs in the world, after caffeine and nicotine?

A

Heroin

B

Aspirin

C

Marijuana

D

Cocaine