Answer: The statement "It carries amino acids to the ribosome" is not true
Explanation:
Transfer RNA, also known as tRNA acts as specific carriers of activated amino acids to specific sites on the protein-synthesizing templates of ribosomes.
Thus, the function of carrying amino acids to ribosomes is the role of transfer RNA, not DNA.
Answer:
If aerobic respiration occurs, then ATP will be produced using the energy of the high-energy electrons carried by NADH or FADH2 to the electron transport chain. If aerobic respiration does not occur, NADH must be reoxidized to NAD+ for reuse as an electron carrier for glycolysis to continue. How is this done? Some living systems use an organic molecule as the final electron acceptor. Processes that use an organic molecule to regenerate NAD+ from NADH are collectively referred to as fermentation. In contrast, some living systems use an inorganic molecule as a final electron acceptor; both methods are a type of anaerobic cellular respiration. Anaerobic respiration enables organisms to convert energy for their use in the absence of oxygen.
Explanation:
Answer:
Chromosomes will not align at the equator of the cell, and subsequently will not separate to opposite poles.
Explanation:
Mitosis is a cellular division that results in daughter cells with identical copies of the genetic material as the parent cell. Mitosis is characterized by different stages viz: Prophase, Metaphase, Anaphase, and Telophase. The centromere is a very important part of the cell during division as it produces microtubules that grows out and bind to the kinetochore of each chromosome, hence, aligning them at the CELL PLATE (cell equator) and subsequently pulls them apart to opposite poles. This alignment and pulling apart occurs during METAPHASE and ANAPHASE respectively.
Mutation is any change that occurs in the nuceleotide sequence of the genetic material (DNA). If a change/mutation occurs leading to a defective or non-functional centromere, the centromere will no longer be able to produce microtubules that will bind to the kinetochores of each chromosome. Therefore, the chromosomes will be unable to align at the equator/middle of the cell and most importantly, inability to separate to opposite poles, which is the main point of Mitosis.
Acclimation is the physiological response or phenomenon which is responsible for survival of salmon in fresh water and salt water.
When a young salmon starts its sea journey it travels wide distances in search for oceans completing a leg of their journey. They travel back to home streams for spawning. This survival in different osmotic potentials and salinity is due to osmoregulation and acclimation. System of salmon detects saline change and instigates a negative feedback system to the body water concentration. Similar feedback works contrastingly when salmon is in fresh water or marine streams of water.
Hence, the physiological response occuring in salmon is acclimation.
Learn more about osmoregulation here:
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Answer:
Prokaryotic gene expression:
The transcription of prokaryotes is different from the ekaryotes. Prokaryotes use the promoter sequence located at -10 and -35 position upstream of the DNA. The transcription is coupled with translation in prokaryotes in the cytoplasm. The spilicing of mRNA do not occur in eukaryotes.
Eukaryotic gene expression:
The regulation of transcription in eukaryotes is different from prokaryotes. The eukaryotic mRNA undergoes splicing and 3' polyadenylation and 5' capping occur in prokaryotes. Different kinds of RNA polymerase is required for the transcription of different RNA molecule. The transcription occurs in the nucleus.
