Answer:
The correct answer is both involve moving substance across the membrane.
Explanation:
Passive transport is one of the most important membrane transport process which helps in transport of polar molecules and gases along their concentration gradient across the plasma membrane.No addition energy is required to carry out passive transport because during passive transport molecules move from high concentration region to the region of low concentration.
Active transport is a specific type of membrane transport process which helps in the passage of ions against their concentration gradient across the plasma membrane.As the ions are moving against their concentration gradient additional chemical energy is required to carry out their uphill transport.
If an egg cell were treated with EDTA, a chemical that binds calcium and magnesium ions, the fertilization envelope would not form.
An eggshell is a soft outer coat and a semipermeable membrane that is made up of calcium carbonate (CaCO3).
It is semi-permeable so air and water can not pass through it and the inside material remains intact.
A small shell or outermost coating called 'cuticle or bloom' prevents bacteria and other microorganisms to get inside the egg shell.
Moreover, egg yolk is a rich source of protein and other beneficial organic compounds.
Egg shell are used as chicken feed.
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Answer:
C. Fitness
Explanation:
Fitness refers to the physical condition of living organisms. If the organisms are fit so it can survive in that environment and increases their population by the process of reproduction but if the organisms are unfit in that environment so they remain less in numbers and with the passage of time, they are fully eliminated from that environment. So fitness is very important for the survival of an organism.