Biology questions
20584 published questions with worked solutions.
- Human RBCs are
- Substance which prevents blood clotting is called
- The lymphocytes protect from
- The increase in number of platelets is called
- Formation of platelets is known as
- Most abundant leucocytes are
- Average blood clotting time is
- Major part of the plasma consists of
- Thromboplastin changes inactive prothrombin into active thrombin in presence of
- Monocytes are related to
- Blood is red in colour due to the presence of
- Eosinophil has _____ nucleus
- Study of blood is called
- Ventricular systole lasts for
- Heart is present in
- Human heart weighs about
- The cardiovascular centre lies in the _______ of the brain
- The opening of the upper chamber of the heart into the lower chamber is known as
- One systole and diastole is known as one
- Semilunar valves prevent back flow of blood into the