If you put the onion cell in a solution with a high concentration of salt the solution is considered hypertonic. That means the onion cell will loose water. The membrane will shrink but the shape of the cell will stay the same because of the cell wall.
Answer:
Mitochondrial ribosomes are similar to the prokaryotic ribosomes since mitochondria evolved by endosymbiosis. So, antibiotics can affect protein synthesis in mitochondria.
Explanation:
Streptomycin is an antibiotic that controls bacterial growth by binding to the small ribosomal subunit (the 30S) of bacteria. Thereby, this antibiotic interferes with protein synthesis and causes misreading of mRNA. Mitochondria were evolved when an anaerobic prokaryote engulfed an aerobic prokaryote which in turn became symbiotic later and lost the ability to live freely.
The ribosomes of mitochondria are similar to the bacterial ribosomes and are inhibited by the presence of streptomycin. Therefore, streptomycin was directly able to inhibit the protein synthesis in mitochondria while not affecting the same process in the cytosol of the cell.
The answer is B. Chloroplasts absorb sunlight to enable a plant to make food. This is because these organelles contain special pigments like chlorophyll that enable them to absorb sunlight and its energy to be used later by the cell!
Hope this helped!
Answer:
Prions
Explanation:
Prions are misfolded proteins found in the brain, they cause other proteins to fold the same way. The cell can't degrade the proteins which leads to an accumulation of these misfolded proteins and the development of neurodegenerative diseases like Alzheimer and Parkinson
