Answer:
RNA catalyzes the formation of peptide bonds
Explanation:
The formation of a peptide bomb between two amino acids in translation which occurs in the ribosomes is catalyzed by peptidyl transferase. Peptidyl transferase is an enzyme that catalyzes addition of amino acid to a growing polypeptide chain and found in the large subunit of the ribosomes. For prokaryotes, the 50S (23S componenet) and for eukaryotes, the 60S (28S component). Its activity is mainly mediated by rRNA and not proteins and thus the region is always referred to as a ribozyme: only enzymes not made up of proteins.
Answer:
Movement of water from it higher potential to its lower potential.
Answer: failure of the heart to pump effectively
Explanation:
The congestive heart failure is a chronic medical condition which affects the blood pumping power of the heart muscles. This results in heart failure. In this condition the fluid builds up around the heart which cannot be efficiently pump out by the heart.
The symptoms includes the fatigue, rapid heartbeat, swollen legs, shortness of breath and other problems.
The treatment associated with this medical condition includes the consumption of less salt, and limiting the fluid intake. In some cases the pacemaker is implanted to recover the pumping activity of the heart muscles.
Answer:
Option A, helps prevent rapid breakdown of the messenger RNA
Explanation:
The poly-A tail is a chain of adenine nucleotides which when get attached to the messenger RNA during RNA processing enhances the stability of the molecule and therefore prevents it from breaking down. This is required because after the transcription of gene in a eukaryotic cell, newly formed RNA molecule undergoes several modifications. It also helps is preventing the new RNA from enzymatic degradation in the cytoplasm and translation.
Hence, option A is correct
Answer:
The alpine biome is found on five of the seven continents; the taiga biome is only found on three. Both the alpine and taiga biomes have cold winters with temperatures below freezing and summers that are warm in comparison. The taiga biome has a much higher temperature range in the summer than the alpine biome.
