Human Health and Diseases - Chapter End Test | Class-12 Biology

 


CLASS-XII    BIOLOGY     CHAPTER END TEST

CHAPTER-07: HUMAN HEALTH AND DISEASES

Q.1

The clinical test that is used for diagnosis of typhoid is:

a. ELISA

b. ESR

c. PCR

d. Widal

1M

Q.2

Cancer causing genes are called:

a. structural genes

b. expressor genes

c. oncogenes

d. regulatory genes

1M

Q.3

Smack' is a drug obtained from the:

a. latex of Papaver somniferum

b. leaves of Cannabis sativa

c. flowers of Dhatura

d. fruits of Erythroxyl coca

1M

Q.4

The disease chikunguniya is transmitted by:

a. house fly

b. Aedes mosquito

c. cockroach

d. female Anopheles

1M

Q.5

Explain the Physical and cytokine barrier of the innate immunity.

2M

Q.6

Differentiate between active and passive immunity.

2M

Q.7

Explain in details the life cycle of retrovirus taking HIV as an example.

3M 

Q.8

Cancer refers to any one of a large number of diseases characterized by the development of abnormal cells that divide uncontrollably and have the ability to infiltrate and destroy normal body tissue. Cancer often has the ability to spread

throughout your body. Cancer is the second-leading cause of death in the world. Cancer may be benign and metastasis type. In the given diagram various types of cancer are presented. The main cause of cancer are Physical factors – Ionizing radiation, such as X-rays and gamma rays Chemical factors – Such as tobacco and smoke Biological factors – Viral oncogenes, protooncogenes, and cellular oncogenes.

  1. Which property of cells prevents the cancerous growth in neighbouring cells

a- Contact inhibition

b- Metastasis

c- Carcinoma

d- All of these

  1. Which of the following is related to the detection of cancer

a- MRI

b- CT Scan

c- Biopsy

d- All of these

  1. Interferons are

a- Glycoprotein

b- Lipoprotein

c- Carboxypeptidase

d- Immunoglobin

  1. Assertion: Metastasis is the spreading of disease through the blood throughout the body.

Reason: Metastasis is a lethal form of cancer.

  1. Both assertion and reason are correct and the reason is the correct 

explanation of assertion.

  1. Both assertion and reason are correct and the reason is not a correct 

explanation of assertion.

c-Assertion is true but the reason is false.

d- Assertion is false but the reason is true

4M

Q.9

Explain five measures that are particularly useful for prevention and control of alcohol and drugs abuse among adolescents.

5M

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