General Science - Biology MCQs - Set 7

1)   Which organelle is associated with formation of basal granules & flagella?

a. Centrosome
b. Golgi apparatus
c. Mitochondria
d. Lysosome
Answer  Explanation 

ANSWER: Centrosome

Explanation:
Centrosome is an organelle that serves as the main microtubule organizing centre (MTOC). Basal granules are cellular organelles that are similar to the centriole in structure and are found at the base of a cilium or flagellum.


2)   Consider the following statements:
1: The main function of rough endoplasmic reticulum is protein synthesis
2: The smooth endoplasmic reticulum is used to synthesize calcium, lipids and carbohydrates
Which of the above statements is/are correct?


a. 1 Only
b. 2 Only
c. Both 1 & 2
d. Neither 1 nor 2
Answer  Explanation 

ANSWER: Both 1 & 2

Explanation:
Both are correct statements


3)   Which of the following test is conducted if the disease is caused by bacteria Salmonella Typhi that causes mild to severe fiver?

a. Widal test
b. Rapid sputum test
c. Lisman test
d. IgM test
Answer  Explanation 

ANSWER: Widal test

Explanation:
Typhoid fever is a bacterial infection due to Salmonella Typhi that causes symptomsWhich may vary from mild to severe and usually begin six to thirty days after exposure. Widal test is most widely used diagnostic test for typhoid fever.


4)   Consider the following differences between RNA and DNA:
1: While DNA is usually found inside the nucleus, RNA is usually found in the cytoplasm
2: DNA contains higher number of nucleotides in comparison to RNA
Which of the above statements is/are correct?


a. 1 Only
b. 2 Only
c. Both 1 & 2
d. Neither 1 nor 2
Answer  Explanation 

ANSWER: Both 1 & 2

Explanation:
Both are correct statements


5)   Which of the following statements are correct about ringworm infection?
1: Ringworm infection can affect both humans and animals
2: This infection is caused by a worm
3: Ringworm is contagious and can be passed from person to person
Select the correct option from codes given below:


a. 1 & 3 Only
b. 2 Only
c. 2 & 3 Only
d. 1, 2 & 3
Answer  Explanation 

ANSWER: 1 & 3 Only

Explanation:
Ringworm infection isn’t caused by a worm. Ringworm is a fungal infection of the skin.


6)   ELISA test and Western blot test are conformity tests for _?

a. Swine Flu
b. Bird Flu
c. AIDS
d. Chikungunya
Answer  Explanation 

ANSWER: AIDS

Explanation:
ELISA test and the Western blot test detect HIV antibodies in blood.


7)   Consider the following diseases:
1: Zika fever
2: Chikungunya
3: Yellow fever
Which of the above is/are spread by female Aedes aegypti mosquito?


a. 1 & 2 Only
b. 2 Only
c. 2 & 3 Only
d. 1, 2 & 3
Answer  Explanation 

ANSWER: 1, 2 & 3

Explanation:
Aedes aegypti is an invasive mosquito. It is also called “yellow fever mosquito”, is an invasive mosquito. The female Aedes aegypti carry and transmit dangerous, potentially fatal diseases including Zika fever, Chikungunya and yellow fever.


8)   Consider the following statements about Antibiotic resistance:
1: Antibiotics are medicines used to prevent and treat bacterial infections
2: India’s Red Line campaign aims to curb irrational use of antibiotics
Which of the above statements is/are correct?


a. 1 Only
b. 2 Only
c. Both 1 & 2
d. Neither 1 nor 2
Answer  Explanation 

ANSWER: Both 1 & 2

Explanation:
Both are correct statements
Antibiotic resistance is an example of natural selection. It can be result of overuse of antibiotics and can be induced by horizontal gene transfer. India launched Red Line campaign to curb irrational use of antibiotics.


9)   Consider the following statements about the Biogas:
1: It is a mixture of methane and carbon dioxide
2: Biogas unlike LPG cannot be converted to liquid under the normal temperature
Which of the above statements is/are correct?


a. 1 Only
b. 2 Only
c. Both 1 & 2
d. Neither 1 nor 2
Answer  Explanation 

ANSWER: Both 1 & 2

Explanation:
Both are correct statements
Biogas is produced by the degradation of organic material by microorganisms in the absence of oxygen. It mainly consists of Methane and Carbon dioxide, but also includes traces of Hydrogen sulphide and Ammonia.


10)   Consider the following:
1: Height
2: Eye color
3: Hair color
4: Voice
Which of the above are examples of phenotype?


a. 1, 2 & 3 Only
b. 2, 3 & 4 Only
c. 1, 3 & 4 Only
d. 1, 2, 3 & 4
Answer  Explanation 

ANSWER: 1, 2, 3 & 4

Explanation:
The genotype of an organism is the genetic code in its cells. The phenotype is the visible or expressed trait, such as hair color.