Answer:
The correct answer is "False".
Explanation:
Hydrogen bonding in DNA between Cytosine and Guanine is more stable that between Adenine and Thymine. This difference in stability is given by the number of hydrogen bonds that form the bindings among the nucleotides. Three hydrogen bonds are formed between Cytosine and Guanine, while only two hydrogen bonds are formed between Adenine and Thymine.
Answer:
1. Energy.
2. Pellagra.
3. Niacin.
4. Beta carotene.
5. Osteoporosis.
6. Calcium.
7. Epithelial.
8. Intrinsic.
9. Sunlight.
Explanation:
1. Riboflavin and thiamin are important for energy production within cells, including nervous system cells.
2. Pellagra: the niacin-deficiency disease causing dermatitis.
3. Niacin: this vitamin can be produced in the body if enough tryptophan (an amino acid in proteins) is present.
4. Beta carotene: is one of the plant-based forms of vitamin A that must be made active in the body.
5. Osteoporosis: Thinning of bones that occurs in older age and results in serious fractures.
6. Active vitamin D acts on 3 key target organs/tissues in the body to raise the blood calcium levels.
7. Epithelial: Type of tissue that lines and protects the digestive tract and respiratory tract and is maintained by vitamin A.
8. Intrinsic factor, produced in the stomach, is needed for the body to be able to absorb adequate amounts of vitamin B12.
9. Vitamin D can be produced by exposure of the skin to sunlight.
Honestly im just trying to get my points
I'm no sure but I think this a factor of evaluation, so an evolutionary explanation?
Answer:
The correct answer is - The tryptophan operon shows C. negative regulation.
Explanation:
Tryptophan is an amino acid, excessively synthesized by the organism, it regulates its transcription through “trp Operon.” In this operon, the corepressor of the tryptophan binds to the repressor protein and gets activated.
This activated repressor now binds to the operator site, and prevents the binding of RNA polymerase enzyme and inhibits the protein synthesis.