Answer:
b. False
Explanation:
Angina pectoris is the medical term for chest pain that results from coronary heart disease.
It occurs when the heart muscle doesn't get as much blood as it needs and is usually caused by the accumulation of plaque on the inner walls of the heart’s arteries.
Answer:
dyes used in negative staining have an. acidic chromagen (negatively charged chromophore) Examples of negative stains. NIgrosin and eosin. heat fixing smears can.
This membrane is called a selectively permeable membrane as it only allows for the entry of specific substances and does not allow of others.
Answer: The net movement is called diffusion.
Explanation:
Diffusion is the net movement of substance from region of higher concentration to a region of lower concentration.
The movement is due to constant and random motion characteristics of atoms ,ions and molecules due to kinetic energy. It continues until the concentration of substance is uniform.
Homeostasis is maintained through negative feedbacks. As changes in the environment push a system property from its equilibrium, negative feedbacks counteract the. Change in environment. Change in environment.