As a cell approaches the end of the G1 phase it is controlled at a vital checkpoint, called G1/S, where the cell determines whether or not to replicate its DNA. At this checkpoint the cell is checked for DNA damage to ensure that it has all the necessary cellular machinery to allow for successful cell division.
Answer:
Yes breakfast does have the energy that you need throughout the day for example i have skipped breakfast and i was very tired throughout the day. you should eat breakfast as a necessity every single day
Explanation:
Answer:
The bladder stores urine, and the sphincter blocks urine from passing to the urethra.
Answer:
The correct answer is D.
Explanation:
Papillary muscles, attached via chordae tendineae, help to close the valves and prevent regurgitation.
Pectinate muscles are parallel ridges in the walls of the atrium of the heart, mainly in right atrium. They can stretch during adverse loading conditions, to <em>help the right atrium to dilate without much wall stres</em>s.
