Biology 5.2.4 Flashcards
Too much Water in the Blood results in Cells ___.
Swelling.
Too Little Water in the Blood results in Cells ___.
Dying.
What are the 2 Sources of Water in the Human Body? (2)
-Our Diet.
-Aerobic Respiration.
Both the Cytoplasm and Plasma are largely Composed of ___.
Water.
Water is Lost from the Body in the following ways: (3)
-Exhalation.
-Sweat.
-Urine.
Which Organ Controls the Loss of Excess Water, Ions, & Urea?
The Kidneys.
The Digestion of Proteins from the Diet results in Excess ___ ___, which need to be Excreted Safely, as they cannot be Stored by the Body in the same way that Excess ___ can.
Amino Acids, Glucose.
What is ‘Deamination’?
Deamination is the Process of Breaking Down Excess Amino Acids. It Predominantly Occurs in the Liver.
___ in the Liver Split Up the Excess ___ ___ Molecules, with the part Containing Carbon Turned into ___, & the other parts Containing Nitrogen turned into ___. When this happens, we say that Amino Acids have been ___.
Enzymes, Amino Acids, Glycogen, Ammonia, Deaminated.
What do the Kidneys do in the Human Body?
The Kidneys help to Control the Water Content of the Body, & the Concentrations of Substances (eg Na & K Ions) Dissolved in the Fluids of the Body.
When Blood Passes through the Kidneys, the ___ it is Under Increases as it is Pushed into the Filters.
Pressure.
The Kidneys Contain Highly Branched ___ Networks that from Filters which contain Pores.
Capillary.
Substance forced out of the Blood during the Filtration Process include Glucose, Urea, & Water Ions Dissolved in it. What is the Liquid formed called?
Filtrate.
Once the Filtrate is formed, the Kidneys then ___ ___ Substances needed by the Body, back into the Bloodstream.
Selectively Reabsorb.
What happens to Substances that aren’t Reabsorbed by the Kindeys?
They form Urea.
