Cancer

Q. Which of the following is a characteristic of a cancer cell?

1. Replicates an unlimited number of times
2. Grows and divides without stimulation from a growth factor
3. DNA damage does not halt division
4. Releases factors that can cause nearby cells to become cancerous

Q.

Which among the following is an artificial sweetening agent?

1. Honey

2. Maple Syrup

3. Saccharin

4. Molasses

Q.

What are the three types of radiation?

Q.

Which one of the following is not an artificial sweetening agent?

1. saccharin

2. aspartame

3. sucralose

4. sucrose

Q.

A person has been advised by the doctor to take less sugar in his diet. Name the disease that person is suffering from.

Q.

What is the main cause of graves disease?

Q.

Causative factor of cancer is called

1. Oncogenes

2. Radiogens

3. Estrogens

4. Carcinogens

Q.

The alkaloids found in the plant Madagascar Periwinkle is useful for curing which type of cancer?

1. Breast Cancer

2. Lung Cancer

3. Blood Cancer

4. Ovarian Cancer

Q. Define metagenesis. Give a suitable example

Q. Identify the disease.
Condition: Abnormal cell growth
Symptom: Lump in breast
Reason: Excessive junk food

1. Diabetes
2. Cancer
3. Heart attack
4. AIDS

Q. What are carcinogens? Name any two carcinogens. Also explain the term malignancy.

Q. 'X' is a fatal disease which is caused by bite of infected animal.
Symptoms include:

• Prolonged fever
• Fear of water
• Uncontrolled reactions

Identify 'X'.

1. Swine Flu
2. Rabies
3. Dengue
4. AIDS

Q. Cancerous cells divide repeatedly without exhibiting the shortening of DNA typical of normal cells that occur with replication. Why is this important?

1. Cancer cells resist aging due to an enzyme telomerase, which elongates and preserves genetic material after repeated cycles of replication.
2. Cancer cells become immortalized due to extra quantities of the enzyme DNA primase which can repair pieces of DNA that break off during replication.
3. Cancer cells have longer life spans than normal cells as a result of a special kind of DNA polymerase that can function in all temperatures during replication.
4. Cancer cells can extend the ends of the DNA in regions where primers were not replaced by DNA nucleotides due to the enzyme ligase.

Q. A disease caused by uncontrolled division of abnormal cells in the body is called _____.​

Q. Khevna prefers to serve her grand dad with sugar-free tea. What could be the disease her grand dad is suffering from?

1. Jaundice
2. Diabetes
3. Dysentery
4. Cholera

Q. Select the correct option.
Assertion [A]: A person addicted to substance abuse is not healthy.
Reason [R]: Health is a state of good physical, mental and social well-being.

1. A is true and R is false
2. Both A and R are true and R explains A
3. Both A and R are true R does not explain A
4. Both A and R are false

Q.

There are many signs and symptoms of cancer.

1. True
2. False

Q. What are carcinogens? Give two examples. Why the disease caused by them is so much dreaded?

Q. Which one of the following is carcinogenic?

1. Mustard gas
2. Methyl Nitro-Nitrosoguanidine
3. Infra red radiations
4. AlI of the above

Q. Ultraviolet light from sunlight is the main cause of skin cancers.

1. True
2. False

Q. Match the Column - I with the appropriate items in Column II :-

Column - I	Column - II
(a) Radiation (b) Chemical Carinogens (c) Physical Carcinogens (d) Biological Carcinogens	(i) Oncogenic virus (ii) Oral caner (iii) Leukemia (iv) Kangri cancer

1. a - (iv), b - (i), c - (ii), d - (iii)
2. a - (iii), b - (i), c - (ii), d - (iv)
3. a - (iii), b - (i), c - (iv), d - (ii)
4. a - (iii), b - (ii), c - (iv), d - (i)

Q. Haemophilus influenza is causitive agent of

1. Cholera
2. Pneumonia
3. Plague
4. Corona

Q.

The alkaloids found in the plant Madagascar Periwinkle is useful in curing

1. Blood Cancer

2. Breast Cancer

3. Ovarian Cancer

4. Lung Cancer

Q. Uncontrolled cell division leads to

1. normal growth
2. cancer
3. whooping cough
4. gigantism.

Q. Which are the diseases that can be transmitted through the shown ways?

1. Cancer
2. AIDS
3. Syphilis
4. Tuberculosis

Q. Smoking is Injurious to health'
(a) Write down any two injurious / toxic substances contained in this smoke.
(b) The capacity of blood to receive oxygen is reduced in people who have this habit. Why?

Q. Assertion :Cancer cells are virtually immortal until the body in which they resides dies. Reason: Cancer is caused by damage to genes regulating the cell division cycle.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect

Q. are people with less melanin suffer any disease or disability?

Q. What are barbiturates and carcinogens?

Q.

Spores of disease-causing bacteria can be killed by the method of _____