The variety of living organisms living on the earth is referred as biodiversity or biomes
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<span>Much like a cell, a virus is able to
Answer: </span>
<span> change over time.
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Answer:
The given statement is false.
Explanation:
Microfilaments refer to the solid rods formed of a protein called actin. Microfilaments are also considered as actin filaments. It is found in all the cells of eukaryotes, the microfilaments are mainly structural in function and are an essential constituent of the cytoskeleton, along with intermediate filaments and microtubules.
Microfilaments vary from 5 to 9 nm in diameter and are developed to withstand huge amounts of tension. With myosin, microfilaments assist in generating the forces used in basic cell motions and cellular contraction. The microfilaments also allow a differentiating cell to separate into two cells and also take part in amoeboid movements of some kind of cells.
The correct answer is mitral valve prolapse.
The condition takes place when the leaflets of the mitral valve prolapse (bulge) into the left upper chamber, that is, left atrium of the heart, like a parachute at the time of contraction of the heart.
The symptoms of the condition are dizziness or light-headedness, irregular heartbeat, shortness of breath, chest pain that is not due to any coronary heart disease or heart attack, and fatigue.
The signs of mitral valve prolapse include a crisp mid-systolic click, succeeded by a late systolic mumble if regurgitation is existing.
