A mineral is a naturally occurring inorganic solid that has a fix chemical composition.
Another naturally occurring solid substance is Rocks.
Rocks are different from the Minerals as they are composed of several minerals and have different proportion of chemical compounds present in them along with some organic components also.
Explanation:
- Minerals have a fix chemical composition and are classified as metallic minerals, non metallic minerals and mineral fuels.
- Minerals are of immense use as they are the source from which pure elements can be obtained.
- Some examples of common minerals are Magnetite an ore of irone, Bauxite an ore of aluminium, Limestone, coal an example of mineral fuel.
Since there are 4 nitrogen bases available and in a triplet codon, 3 bases are named, there should be 64 possible combinations. Some amino acids are coded by more than one codon. In this case, the answer to this problem is B.Every single amino acid has more than one codon.
Answer:
Chromosomes are thread-like structures located inside the nucleus of animal and plant cells. Each chromosome is made of protein and a single molecule of deoxyribonucleic acid (DNA). Passed from parents to offspring, DNA contains the specific instructions that make each type of living creature unique.
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Answer:
1. living s strain= mice dies
2. heat killed s strain= mice live
3. living r strain= mice live
4. heat killed s strain + living r strain= mice die
Explanation:
Options
1. living s strain
2. heat killed s strain
3. living r strain
4. heat killed s strain + living r strain
Solution
It is known that S strain of the pneumococcal bacteria has virulent properties and hence it can kill an organism but when this S strain is heated its virulent factor dies and it becomes ineffective. R strain on the other hand does not possess virulent characteristics and hence it does not affect the mice. If R virulent is mixed with heat killed S strain, the new strain is transformed virulent strain which could kill an organism.
Considering above description, the answer would be
1. living s strain= mice dies
2. heat killed s strain= mice live
3. living r strain= mice live
4. heat killed s strain + living r strain= mice die