The process by which mRNA is synthesized from DNA is:
A. Translation
B. Transformation
C. Transcription
D. Replication
Answer: Option C
Solution (By JKSSB Mock Tests)
Transcription, catalyzed by RNA polymerase, copies the genetic information from a DNA template into a complementary mRNA molecule. Translation then uses this mRNA to synthesize proteins. Replication duplicates DNA, transformation is DNA uptake by bacteria.
Explanation:
Cilia and flagella are motile structures with a 9+2 axoneme of microtubules. Their movement propels the cell or moves fluids. R explains the structural basis.
Explanation:
The stamen is the male reproductive organ, consisting of an anther (producing pollen) and a filament. The pistil (carpel) is the female part, petals attract pollinators, sepals protect the bud.
Explanation:
Human somatic cells have 46 chromosomes: 44 autosomes and 2 sex chromosomes (XX or XY). Sperm cells are haploid (n=23), containing 22 autosomes and one sex chromosome (either X or Y). The ovum also has 22 autosomes and one X. Fertilization restores 44 autosomes plus XX or XY. So sperm has 22 autosomes.
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