All of the following are false statements about Red blood cells except: their li
ID: 87437 • Letter: A
Question
All of the following are false statements about Red blood cells except: their life span is approx 2 years. They perform mitosis. they contain nuclei. they contain hemoglobin. Which of the following is NOT a characteristic of red blood cells? Can perform diapedesis. Ability to carry oxygen and carbon dioxide. Biconcave disc shaped cell structure The major factor contributing to blood viscocity. Generates ATP by anaerobic mechanisms. The leukocyte that releases histamine and other inflammatory chemicals is the: Basophil Monocyte EosinophilExplanation / Answer
Answer 14: d (As explained below)
RBC lifespan is 100 to 120 days. So, first option is false. They cannot perform mitosis. So, second option is false. Mature RBCs are not nucleated. So that is also false. They contain hemoglobin. So that is true.
Answer 15: d (As explained below)
They can pass through intact walls of capillaries. So first option is correct. They can carry both oxygen and carbon dioxide depending on the physiological conditions at the location. So, second option is also correct. They have biconcave disc shape so no point in the cytoplasm is away from its reach. So, third option is also right. They are a major factor contributing to the viscosity. So, the fourth option is also true. However, this option is not the characteristic of RBC. It describes the characteristic of blood as a whole. RBC lack mitochondria, so they produce ATP by anaerobic mechanisms. The last option is also true.