Biology

Which of the following cations is required for the conversion of Prothrombin into active thrombin by thromboplastin? (Blood coagulation Step)

Ca2+ Ca2+ ion along with other factors acts on Prothrombin to convert it into thrombin https://quizboard.app/post/what-are-clotting-factors/

What are Clotting Factors?

Clotting factors are components found in plasma that are linked to the blood clotting process. These factors are named and numbered based on their...

Viviparity is found in which of the following organism?

Sharks viviparity is the mode of reproduction in which development of the embryo takes place inside the body of the parent. Example : Human, Primates, Sharks...

Which vitamin is considered to be a hormone?

 Vitamin D Vitamin D is a group of fat-soluble secosteroids which is responsible for increasing intestinal absorption of calcium, magnesium, and phosphate, and many other...

In human body, which hormone regulates blood calcium and phosphate?

Parathyroid hormone Parathyroid hormone (PTH), also called parathormone or parathyrin, is a hormone secreted by the parathyroid glands.  This hormone regulates the serum calcium and phosphate concentration through its effects on...

Which vitamin is essential for the coagulation of blood?

 Vitamin K Blood coagulation also known as blood clotting is a process that changes liquid blood into  an insoluble gel form. Blood clotting helps maintaining...

Deficiency of which vitamin causes knock- knee, bow legs and pigeon chest in children?

Vitamin D Deficiency of Vitamin D causes Rickets, which is a bone disease generally found in children. This disease causes bowed legs and other bone...

What is the only bone in the human body that is not attached to any other bone?

The Hyoid Bone The hyoid bone also known as the lingual bone or tongue-bone) is a semi-circle or horseshoe-shaped bone situated in the anterior midline...

Which hormone stimulates milk production in mammals?

Prolactin Prolactin otherwisely known as PRL hormone is also known as luteotropic hormone or luteotropin. It is a protein by nature. This hormone enables...

Blastoma is a cancer involving which tissue?

Embryonic tissue What is Blastoma? Blastoma is a type of cancer which develops due to malignancies in precursor cells usually found in embryonic tissue. The growth...

In vertebrates, simple reflex action is

a) monosynaptic Reflex action is an involuntary physiological response to a stimulus, as the withdrawal of a body part from burning heat. An unlearned or...

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