The molecule that carries the genetic information from DNA to the ribosome is: MCQ with Answer and Explanation

The molecule that carries the genetic information from DNA to the ribosome is:
A. rRNA
B. snRNA
C. tRNA
D. mRNA
Answer: Option D
Solution (By JKSSB Mock Tests)
Messenger RNA (mRNA) is transcribed from DNA and carries the codon sequence to ribosomes, where it is translated into a polypeptide. tRNA brings amino acids, rRNA forms ribosomal structure, snRNA involved in splicing.

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Practice More Biology Questions

Question #1
The pigment responsible for the orange color in carrots is:
A. Chlorophyll
B. Beta-carotene
C. Lycopene
D. Xanthophyll

Correct Answer: Option B


Explanation:
Beta-carotene is a precursor of vitamin A (provitamin A) and imparts an orange color to carrots, pumpkins, and sweet potatoes. Lycopene gives red color to tomatoes, chlorophyll is green, xanthophyll is yellow. Beta-carotene is an antioxidant and is important for vision and immune function.

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Question #2
The organelle that is involved in the formation of the acrosome in sperm cells is the:
A. Lysosome
B. Golgi apparatus
C. Mitochondria
D. Endoplasmic reticulum

Correct Answer: Option B


Explanation:
The Golgi apparatus forms the acrosomal vesicle, which contains hydrolytic enzymes for penetrating the egg during fertilization.

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Question #3
Consider statements about environment: 1. The ozone layer protects Earth from UV radiation. 2. Greenhouse gases trap heat in the atmosphere. 3. Acid rain is beneficial for soil fertility. Which are correct?
A. 1 and 3 only
B. 2 and 3 only
C. 1, 2 and 3
D. 1 and 2 only

Correct Answer: Option D


Explanation:
The stratospheric ozone layer acts as a vital shield, absorbing the majority of the sun's harmful ultraviolet (UV-B and UV-C) radiation, protecting life on Earth. Greenhouse gases (like CO2, methane, water vapor) absorb and re-emit infrared radiation, trapping heat in the troposphere and maintaining Earth's temperature (the greenhouse effect). Acid rain, containing sulfuric and nitric acids, is highly detrimental; it leaches essential nutrients from the soil, releases toxic aluminum, and damages plant life, reducing soil fertility. Thus, statements 1 and 2 are correct.

This question belongs to: Science Biology