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The period of life cycle of cell (cell cycle) between two consecutive divisions is termed as the Interphase or misleading called resting phase. It is a period of great metabolic activity that typically occupies 90% of the total cell cycle. It is the period during which the normal activities of the cell take place.Inter phase also sets the stage for the cell division because DNA replication is completed during the S phase of the inter phase. Before a cell divides, the DNA in its nucleus must produce an exact copy of itself. This process is called replication because the double stranded DNA makes a replica, or duplicate, of itself. Replication is essential to ensure that each daughter cell receives the same genetic material as is present in the parent cell.
Replication begins with the strands of DNA untwisting .A DNA helicase enzyme breaks the weak hydrogen bonds joining the purine and pyrimidine bases, and the DNA molecules begins to itself.As soon as new bonds forms, the untwisted strands begin to twist again.
Define the Criteria for Assessment of Thiamin Status? Thiamin status has been assessed by measuring urinary thiamin excretion under basal conditions or after thiamin loading, t
Before we proceed to discuss kin selection we should define the term altruism. It refers to the behaviour pattern of an individual in the population for the benefit of other member
Q. Where in eukaryotic cells does mRNA synthesis take place? To where do these molecules migrate? Messenger RNA molecules are synthesized within the nucleus, pass through gain
What is phototropism? Phototropism is the movement of plant structures in response to light. Phototropism might be positive or negative. Positive phototropism is that in which
TYPES OF SPERM Mainly two types . (1) Flagellated Sperm - Generally all sperm are monoflagelated, but in todfish or opsonus sperm is biflagelated. (2) Non flagellated spe
Q. Define the Glucose Tolerance Test? In Glucose Tolerance Test (GTT) if the blood sample is to be taken in the morning, patient is advised to follow fasting instructions i.e.
Explain the Ethological Approach in Taxonomy The use of behavioural or ethoIogica1 characteristics in animals is relatively new, though extremely useful, particularly in the id
Q. Carbohydrate requirement during congestive cardiac failure? While the quantity of carbohydrate remains almost the same as per the RDI i. e, 60% of the total energy, the qual
Q. Basic working of Midbrain? Midbrain: Also known as the mesencephalon, this part is located behind the frontal lobes and in the center of the entire brain. It deals with func
Explain Intensity of heart sound? Intensity of S 1, particularly M 1 depends on the position of the bellies of mitral leafets when the LV begins to contract since S 1 is loudes
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