What is the correct dental formula for an adult human?
A. 2103 / 2103
B. 2123 / 2123
C. 2133 / 2133
D. 2122 / 2122
Answer: Option B
Solution (By JKSSB Mock Tests)
The dental formula represents the number of each type of tooth in one half of the upper and lower jaws. For an adult human, it is 2123 / 2123. This means: 2 Incisors, 1 Canine, 2 Premolars, and 3 Molars in each quadrant (upper right, upper left, lower right, lower left), totaling 32 teeth.
Explanation:
Translation occurs at ribosomes, where tRNA anticodons recognize mRNA codons and add the corresponding amino acids to a growing polypeptide chain. Replication duplicates DNA, transcription synthesizes mRNA from DNA, translocation is movement of chromosomes or protein transport.
Explanation:
Peter Mitchell proposed the chemiosmotic theory (1961), explaining that a proton gradient across a membrane drives ATP synthesis. Krebs discovered the citric acid cycle, Calvin the Calvin cycle, Lipmann discovered coenzyme A.
Consider statements about animal husbandry: 1. Artificial insemination improves cattle breeds. 2. Multiple Ovulation Embryo Transfer is used in poultry. 3. Crossbreeding combines traits of two breeds. Which are correct?
Explanation:
Artificial insemination allows the use of superior bull semen to improve cattle genetics widely. Multiple Ovulation Embryo Transfer (MOET) is a technique used in cattle and other mammals to increase herd improvement rates, not in poultry (which uses hatching eggs). Crossbreeding involves mating animals of different breeds to combine desirable traits and exploit hybrid vigor. Thus, statements 1 and 3 are correct.
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