4.) mumps or Mononucleosis
Answer:
b) to deliver nutrients and other essential materials to cells
J-shape curve
J-shape curve is a curve that shows the population density of an organisms as they increase rapidly in a logarithmic or exponential form but abruptly stops due to environmental resistance. Thus, the population rate is largely determined by the biotic potentials and size of the population. However, exponential growth produces J-shaped curve.
Answer:
D. All of the above
Explanation:
Matter is a substance which has mass and takes up space by volume the properties of matter are,
States of matter (solid,liquid,gas)are inter convertable.
Force of attraction varies from one kind of matter to another.
States of matter can be varied by varying temperature and pressure.
Answer: The correct answer is - c. plasma membrane.
Plasma membrane( also called Cell membrane, made up of bilayer of phospholipids) is a membrane surrounding the cytoplasm of all cells and separates the internal environment of cell from its exterior environment.
It is a semipermeable membrane, which means that it allows the entry and exit of only specific molecules ( such as small uncharged molecules, small polar molecules like Oxygen and Carbon-dioxide, small uncharged polar molecules like water).
Also, it does not allow the toxic substances to enter the cell and at the same time the useful substances to leave the cell.
By doing this, it keeps the cell interior structurally and biochemically different from its surroundings.
