Answer: The statement is false
Explanation: A codon consists of three nucleotides instead of four. Codons are triplets of nucleotides on an mRNA molecule that code for specific amino acids. Each amino acids are specified by at least one codon. Some amino acids are specified by one codon, some are specified by two or more codons. The phenomenon whereby more than one codon specifies one amino acid is known as the degeneracy of the codons.
Answer:
The amount of energy at each trophic level decreases as it moves through an ecosystem. As little as 10 percent of the energy at any trophic level is transferred to the next level; the rest is lost largely through metabolic processes as heat
Explanation:
No, daughter cells refer to cell division. In mitosis, the daughter cells will be identical to the parent cell. However, in meiosis, there will be 4 daughter cells, each genetically unique from one another and the parent cell. This is because of crossing over that occurs in prophase I.
Wetlands play a vital role in the health of the environment. In addition to supporting a variety of organisms, they also reduce water erosion by trapping sediments. Wetlands help clean water by absorbing nutrients that are added to the water supply through agriculture and industry.
Answer:
The correct answer is option E. "DNA in both daughter cells would be radioactive".
Explanation:
Radioactive thymidine incorporation has irremediable effects in thymine and cytosine in bacteria such as E. coli. Although there are some reports of recovery of E. coli from UV-irradiation DNA damage, the presence of radioactive bases such as thymine is often irremediable. Therefore, after a dividing culture of E. coli exposed to radioactive thymine divides, DNA in both daughter cells would be radioactive.
