The process of converting mRNA information into a polypeptide chain is: MCQ with Answer and Explanation

The process of converting mRNA information into a polypeptide chain is:
A. Translation
B. Replication
C. Transduction
D. Transcription
Answer: Option A
Solution (By JKSSB Mock Tests)
Translation is the synthesis of a polypeptide chain at the ribosome, where the genetic code in mRNA is read by tRNA anticodons to assemble amino acids in the correct order. Transcription produces mRNA from DNA, replication duplicates DNA, transduction is gene transfer by viruses. Translation involves initiation, elongation, and termination factors.

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Question #1
Which cell organelle is responsible for the formation of lysosomes?
A. Nucleus
B. Endoplasmic Reticulum
C. Golgi apparatus
D. Mitochondria

Correct Answer: Option C


Explanation:
Lysosomes are membrane-bound vesicles containing hydrolytic enzymes formed by the Golgi apparatus. The Golgi modifies, sorts, and packages proteins from the rough ER into vesicles; some become lysosomes. These organelles function in intracellular digestion and autophagy. Rough ER synthesizes enzymes, but the final packaging into lysosomes occurs at the Golgi. Hence, Golgi is sometimes called the 'traffic police' of the cell.

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Question #2
Consider statements about plant biology: 1. Phototropism is growth towards light. 2. Geotropism is growth in response to gravity. 3. Thigmotropism is growth in response to water. Which are correct?
A. 1 and 3 only
B. 1 and 2 only
C. 1, 2 and 3
D. 2 and 3 only

Correct Answer: Option B


Explanation:
Phototropism is the directional growth of a plant organ in response to light, typically positive in shoots. Geotropism (gravitropism) is the growth response to gravity, with roots showing positive geotropism (growing down) and shoots negative geotropism (growing up). Thigmotropism is the growth response to touch or physical contact, seen in climbing plants like vines, not water (which is hydrotropism). Thus, statements 1 and 2 are correct.

This question belongs to: Science Biology
Question #3
The membrane that surrounds and protects the lungs is called:
A. Pleura
B. Peritoneum
C. Pericardium
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Correct Answer: Option A


Explanation:
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