A buffer is a solution that maintains a pH of 7.

 

 

False: Wiping without gloves would be unsafe because bleach is a strong chemical that can irritate or damage the skin on direct contact. Handling it without protection increases the risk of burns, rashes, or chemical injury. Gloves should always be worn when using bleach solutions to prevent skin contact and chemical harm. Protective equipment ensures safe cleaning practices in laboratory and healthcare settings.

A. Mitochondria: Prokaryotic cells do not contain mitochondria. Instead, they generate energy through processes that occur across the plasma membrane. They are found exclusively in eukaryotic cells and are absent in prokaryotes.

B. Lysosomes: Lysosomes are membrane-bound organelles found only in eukaryotic cells. Prokaryotes lack these structures and instead rely on enzymes within the cytoplasm for breakdown processes.

C. Ribosomes: Ribosomes are present in prokaryotes and eukaryotes, serving as the site of protein synthesis. In prokaryotes, they are smaller (70S type) but functionally equivalent to those in eukaryotes.

D. All of the above: This is incorrect because prokaryotes do not contain mitochondria or lysosomes.