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21 questions · timed · auto-graded

Question 11 Mark
Fill in the blanks: Living organisms carrying the infecting agents from one person to another are called ___________.
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Question 21 Mark
The two important contributory causes of diseases are _________ and _________ make up.
Answer
The two important contributory causes of diseases are Under nourishment and Genetic make up.
Explanation: The diseases are caused by lack of nutrients or passed on from heredity from parents to off springs. The diseases caused due to lack of nutrition are Scurvy, Rickets. Some genetic disorders are inherited from the parents, while other genetic diseases are caused by acquired changes or mutations in a pre-existing gene or group of genes. The genetically acquired disease are Down syndrome and Cystic fibrosis.
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Question 31 Mark
Microbes are the immediate causes of _______ diseases.
Answer
Microbes are the immediate causes of infectious diseases.

Explanation:

Most microbes belong to four major groups: bacteria, viruses, protozoa or fungi. (To find out more, see the “Bacteria/ Viruses/ Protozoa” fact sheets). Disease-causing microbes can also be called pathogens, germs or bugs and are responsible for causing infectious diseases.

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Question 41 Mark
Fill in the blanks: _________ is defined as physical, mental and social well - being and comfort.
Answer
Health is defined as physical, mental and social well - being and comfort.
Explanation: Health: Health is defined as physical, mental and social well - being and comfort. Being healthy means one feels good physically, has positive outlook and is able to cope with the social and mental pressures without much difficulty.
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Question 51 Mark
Name the target organs for the following diseases: Hepatitis targets________.
Answer
Hepatitis targets liver.
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Question 61 Mark
The virus that causes acquired immune deficiency syndrome $(AIDS)$ parasitizes ____________.
Answer
The virus that causes acquired immune deficiency syndrome $(AIDS)$ parasitizes Helper T-Cells.
Explanation:
$T$-cells are targeted as the $AIDS$ parasitizes the $CD4+$ molecules on their surface. Our body fights back the $HIV$ infections producing another $2$ billion cells to replace the infected ones stabilizing the $T$-cells count temporarily. Yet from day one, the $T$-cells fight a losing battle. Although $HIV$ target $T$-cells and other cells in the body, $HIV$ thrives mainly in the lymph nodes and the other immune parts of our body.
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Question 71 Mark
Any organisms capable of producing a disease is called __________.
Answer
Any organisms capable of producing a disease is called Pathogen.
Explanation: A pathogen or infectious agent is a biological agent that causes disease or illness to its host. pathogens can infect unicellular organisms from all of the biological kingdoms.
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Question 81 Mark
Name the target organs for the following diseases: Pneumonia targets ________.
Answer
Pneumonia targets lung.
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Question 91 Mark
Fill in the blanks:
Common cold is _______ disease.
Answer
Common cold is acute disease.
Explanation:
Common cold is acute disease.
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Question 101 Mark
Diseases are of two main kinds : Congenital and ___________.
Answer
Diseases are of two main kinds : Congenital and Acquired.
Explanation: Acquired heart disease is heart disease that develops after birth. There are several types of congenital heart disease. Example is $AIDS$ and Amebiasis.
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Question 111 Mark
Fill in the blanks: __________ disease continues for a few days and causes no longer term effect on body.
Answer
Acute disease continues for a few days and causes no longer term effect on body.
Explanation: Acute: Acute diseases continues for a few days and causes no longer term effect on body, e.g., Indude cold, cough, typhoid, cholera, etc.
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Question 121 Mark
Malaria is spread by __________ which breed in ___________ water.
Answer
Malaria is spread by Anopheles which breed in Stagnant water.
Explanation: Malaria disease is transmitted through the bite of an infected Anopheles mosquito. Infected mosquitoes carry the Plasmodium parasite. When this mosquito bites, the parasite is released into your bloodstream. Once the parasites are inside the body, they travel to the liver, where they mature. After several days, the mature parasites enter the bloodstream and begin to infect red blood cells. Within $48$ to $72$ hours, the parasites inside the red blood cells multiply, causing the infected cells to burst open. The parasites continue to infect red blood cells, resulting in symptoms that occur in cycles that last two to three days at a time.
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Question 131 Mark
Name the target organs for the following diseases:
Fungal disease targets _________.
Answer
Fungal disease targets skins.
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Question 141 Mark
Diseases present from the birth are called ___________.
Answer
Diseases present from the birth are called Congenital.
Explanation: A congenital disorder, also known as a congenital disease, deformity, birth defect, or anomaly, is a condition existing at or before birth regardless of cause. Of these disorders, those characterized by structural deformities are termed "congenital anomalies" and involve defects in a developing fetus.
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Question 151 Mark
Fill in the blanks: Many skin diseases are caused by _________.
Answer
Many skin diseases are caused by _________.
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Question 161 Mark
___________ vaccine gives considerable protection against tuberculosis.
Answer
BCG vaccine gives considerable protection against tuberculosis.
Explanation: $T$-cells are targeted as the $AIDS$ parasitizes the $CD4+$ molecules on their surface. Our body fights back the $HIV$ infections producing another $2$ billion cells to replace the infected ones stabilizing the $T$-cells count temporarily. Yet from day one, the $T$-cells fight a losing battle. Although $HIV$ target $T$-cells and other cells in the body, HIV thrives mainly in the lymph nodes and the other immune parts of our body.
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Question 171 Mark
Cholera is caused by _________ but malaria is caused by __________.
Answer
Cholera is caused by Bacterium but malaria is caused by Protozoan.
Explanation: Cholera is an infection of the small intestine by some strains of the bacterium Vibrio cholerae. Symptoms may range from none, to mild, to severe. Malaria is a mosquito-borne infectious disease affecting humans and other animals caused by parasitic protozoans belonging to the Plasmodium type.
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Question 181 Mark
Fill in the blanks: Pneumonia is an example of ________ disease.
Answer
Pneumonia is an example of Infectious disease.
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Question 191 Mark
The organism which spread the disease from an infected to a healthy person is called ____________.
Answer
The organism which spread the disease from an infected to a healthy person is called Vector.
Explanation: Vectors are living organisms that can transmit infectious diseases between humans or from animals to humans. Many of these vectors are bloodsucking insects, which ingest disease-producing microorganisms during a blood meal from an infected host (human or animal) and later inject it into a new host during their subsequent blood meal. Mosquitoes are the best known disease vector. Others include ticks, flies, sand flies, fleas, triatomine bugs and some freshwater aquatic snails.
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Question 201 Mark
Interferons are anti _________ proteins.
Answer
Interferons are anti Viral proteins.
Explanation: Interferons $(IFNs)$ are a group of signalling proteins made and released by host cells in response to the presence of several pathogens, such as viruses, bacteria, parasites, and also tumor cells. Interferons are named for their ability to "interfere" with viral replication by protecting cells from virus infections.
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Question 211 Mark
Infectious diseases are caused by _________.
Answer
Infectious diseases are caused by Micro organisms.
Explanation:Infectious diseases are caused by microorganisms such as viruses, bacteria, fungi or parasites Microorganisms that cause disease are collectively called pathogens. The disease are flu, influenza, $AIDS$ etc.
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Fill in the blank - Science STD 9 Questions - Vidyadip