QRS complex refers to the combination of the Q, R, and S waves, and indicates ventricular depolarization and contraction (ventricular systole).
Ventricular rate can be calculated by determining the time interval between QRS complexes. The duration of the QRS complex is normally 0.06 to 0.10 seconds. This relatively short duration indicates that ventricular depolarization normally occurs very rapidly.
P QRS and T waves in electrocardiogram signifies the P wave in an ECG complex indicates atrial depolarization. The QRS is responsible for ventricular depolarization and the T wave is ventricular repolarization.
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Well depending on what the environmental change is the organisms will have to adapt, or move. if they don't they may not survive.
comment if you want an example or 2
The correct answer that would best complete the given statement above would be this: A potential benefit of recruiting slow oxidative fivers for contraction before recruiting fast oxidative and fast glycolytic fibers might be because they are slower to respond, slow oxidative fibers must be stimulated first in order contract simultaneously with the faster fibers. Hope this answer helps.
Answer:
A) Humans without this gene exhibit problem with oxygen binding in their red blood cells.
Explanation:
- Oxygen binds to red blood cells because of their hemoglobin component. It is a protein found in red blood cells.
- Each hemoglobin molecule is able to bind to four oxygen molecules.
- If the gene controlling hemoglobin production is absent in humans, the red blood cells will not be able to bind to oxygen.
- Hence, if the gene given in diagram is removed and it results in difficulty in binding of oxygen to red blood cells, that gene might be involved in hemoglobin production.
Answer:
Clonal deletion.
Explanation:
Antigen - antibody interaction may be defined as the ability of the immune cells to interact with the harmful pathogen or nay other thing that can acts as antigen. This complex formation is important to provide immunity to the body.
Clonal deletion may be defined as the process by which the apoptosis or the removal of the T cells and B cells . This process occurs before the cells become immuno competent and cannot be the outcome of the antigen - antibody interaction.
Thus, the correct answer is option (A).
