Biology problems
- 1. A US team of scientists has found that the mechanism responsible for the ageing process is located --
Options- A. Inside the face
- B. Inside the skin
- C. Inside the brain
- D. Inside the heart Also asked in: Bank Exams
Correct Answer: Inside the brain
Explanation:
The US team of scientists found the mechanism in the hypothalamus, which is located deep inside the brain and showed that it is responsible for the ageing process.
- 2. The study of relation of animals and plants to their surroundings is called__________
Options- A. Ecology
- B. Ethrology
- C. Genealogy
- D. Iconology Also asked in: Bank Exams
Correct Answer: Ecology
- 3. At which stage in its life cycle does the silkworm yield the fiber of commercial use
Options- A. Larva
- B. Egg
- C. Pupa
- D. Imago Also asked in: Bank Exams
Correct Answer: Pupa
- 4. Which organ has finger like outgrowths which are called as Villi (Singular Villus)?
Options- A. Large Intestine
- B. Bladder
- C. Small Intestine
- D. Stomach Also asked in: Bank Exams
Correct Answer: Small Intestine
- 5. Which of the following vitamins are water soluble?
Options- A. Vit. A & Vit. B
- B. Vit. B & Vit. C
- C. Vit. C & Vit. D
- D. Vit. A & Vit. K Also asked in: Bank Exams
Correct Answer: Vit. B & Vit. C
- 6. Lysosome is formed from which of the following cell organelles?
Options- A. Nucleus
- B. Endoplasmic reticulum
- C. Golgi bodies
- D. Ribosomes Also asked in: Bank Exams
Correct Answer: Golgi bodies
Explanation:
?Lysosomes are spherical membranous sacs of enzymes.
?The lysosome membrane helps to keep its internal compartment acidic and separates the digestive enzymes from the rest of the cell.
?Lysosomes are formed by budding from the Golgi complex.
- 7. A protein is synthesized in the endoplasmic reticulum bound ribosomes and it targets to the inner thylakoid space of chloroplast. How many double-layered membrane layers it has to pass to reach its destination?
Options- A. 2
- B. 3
- C. 4
- D. 5 Also asked in: Bank Exams
Correct Answer: 3
Explanation:
There are 3 double-layered membrane layers, which the protein has to pass to reach its destination.
- 8. Plant tissues are of how many types?
Options- A. 3
- B. 2
- C. 5
- D. 6 Also asked in: Bank Exams
Correct Answer: 3
- 9. Nephron is related to which of the following system of human body?
Options- A. Circulatory system
- B. Excretory system
- C. Reproductive system
- D. Respiratory system Also asked in: Bank Exams
Correct Answer: Excretory system
- 10. The process of copying genetic information from one strand of DNA into RNA is termed as
Options- A. translation
- B. transcription
- C. replication
- D. mutation Also asked in: Bank Exams
Correct Answer: transcription
Explanation:
The process of copying genetic information from one strand of the DNA into RNA is termed as transcription. In transcription, only a segment of DNA and only one of the strands is copied into RNA. This necessitates defining the boundaries that would demarcate the region and the strand of DNA that would be transcribed.
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