Which of the following protects bacteria from lysis in dilute solutions and to determine their cellular morphology or shape?
a. plasma membraneb. peptidoglycanc. capsuled. gas vacuoles

The image shows ekgs of a person with normal heart waves and of a person having tachycardia. based on this image, what kind of condition is tachycardia? a. the heart beats abnormally fast. b. the heart beats abnormally slow. c. the right atrium of the heart stops working. d. the left ventricle pumps less blood to the aorta.

Which number represents a basic ph, 4 or 9? numerical answers expected! answer for blank 1: i'll give

Which of these would most likely be a stimulus that would cause the body to initiate feedback mechanisms a.) normal body temperature in an arctic environment b.) normal boy temperature in a tropical environment c.)light physical activity d.)low blood sugar