Answer:
In a chemical reaction the total mass of all the substances taking part in the reaction remains the same. Also, the number of atoms in a reaction remains the same. Mass cannot be created or destroyed in a chemical reaction
Answer:
C) wear a lead protective shield when having teeth XRAYS
Explanation:
The right answer is The plant cell wall provides a more rigid structure.
Plant cells are differentiated from animal cells by the cell wall (among others, they differ in size, vacuoles and the presence of chloroplasts). This wall, called the pectocellulosic wall (composed of pectin and cellulose), gives a rigid structure to the cell and a polygonal morphology to the cell.
Explanation:
What is the name of this website or the book?
Answer: A virus lack the metabolic machinery common to other microorganisms
Explanation:
A virus is an ultramicroscopic particle capable of causing disease. It differs from other disease-causing organisms like bacteria, nematodes etc, because it has no metabolic system of its own but relies on its host system for survival and replication.
Hence, it is difficult for antibiotics to target and destroy viruses without harming patients, rather antiviral drug are prescribed against viruses
