Answer:
Separation between sarcomeres.
Explanation:
The structure of the muscle fibre is composed of many functional units called sarcomere which is interrupted by the discs called Z-discs.
These Z-discs are made of the alpha-actin homodimers which allow the actin filament allows to bind to it along with other proteins. The Z-discs since present at regular intervals in a muscle appears to separate the sarcomere and defines the boundaries of the sarcomere.
Thus, the selected option is correct.
Answer:
Explanation:
cells use carbon dioxide and energy from the Sun to make sugar molecules and oxygen then via respiration processes, cells use oxygen and glucose to synthesize energy-rich carrier molecules, such as ATP, and carbon dioxide is produced as a waste product!
Answer:
S phase of the cell cycle
Explanation:
During Mitosis, DNA is replicated during the S phase (Synthesis phase) of Interphase.
Answer: Option C
Explanation:
The correct sequence which can be used to remember the sequence is as follows.
The people who tend to eat more oily food or cholesterol rich food is more prone to heart attack or cardiac arrest. Blockage occurs in the right and left coronary artery.
Because of the blockage there is a chance of insufficient blood supply in the heart. Ischemia pain starts in the heart due to inadequate oxygen supply.
Then finally the heart beat erraticates and may stop turning into cardiac arrest.