Answer:
Animals takes oxygen inside their body from the environment in order to survive..
Explanation:
Animals takes oxygen inside their body from the environment and exchange of gases occurs in the organ such lungs where the cells loaded itself with oxygen and removed the carbondioxide from the cell. When the organism exhaled carbondioxide gas is released in the environment. Food is broken down in the digestive tract and nutrients is absorbed from small intestine which adds these nutrients into blood that is used by the cells. Kidney filters the blood and removes the nitrogenous waste and excess amount of water from the blood. This urine is removed with the excretory system of the body.
Answer:
One of the characteristic feature of the phospholipid bi- layer is that like dissolve likes.Therefore,polar molecules and compounds pass though the hydrophllic heads,while non-polar lipid soluble substances pass through the hydrophobic tail,but can not diffuse across the head.
The plasma membrane is amphipathic.It is made up of the hydrophilic heads and hydrophobic tails
Cortisol is made of lipid.Therefore,it will diffuse easily across the bi layer of the plasma membrane though the tail,while LH and Epinephrine,will not diffuse across this hydrophobic barriers,since they are made up of polar molecules.
Explanation:
Answer is D cilia are absent in plant cells
1. Electrons travel around the nucleus in fixed energy levels with energies that vary from level to level
2.protons, neutrons, and electrons have a mass, but electrons have far less mass
3.cations and protons
4. idk
