Lecture 2A: Nutrient Uptake: Macro- and Micronutrients Flashcards
Required in large amounts (in culture media, usually represented in gram amounts)
Macronutrients
Required in minute amounts.
Micronutrients
very important macronutrients which is usually obtain from H2O
O and H
Other macronutrients needed by cells but typically in smaller amounts.
-Phosphorus
- Sulfur
- Potassium
- Magnesium
- Calcium and Sodium
For nucleic acids usually as Phosphates (PO4^2-)
Phosphorus
In the essential amino acid as cysteine and methionine.
Sulfur
Where does sulfur also present?
in vitamins like thionine, biotin and anechoic (?) acid
In the cell sulfur is incorporated into this molecule or compounds as _______ or some organic sulfur compound
sulfide
Required for the activity of several enzymes
Potassium
Stabilizes ribosome membranes, and nucleic acids and also for enzymes.
Magnesium
Magnesium is also important in the _____ __ ________
structure of ribosomes
Where does magnesium also important?
components of ribosome, membranes, nucleic acids and also required for activity of many enzymes.
Necessary to maintain the electrolyte balance in the cell.
Calcium and Sodium
Cacium and Sodium are essential (di dapat mawala sa diet) nutrients only for only a few organisms, such as the ______ requirement of most marine microorganisms.
NaCl
Major element of a cell and is needed in the largest amount.
Carbon
Carbon is about ____ of the cell’s dry weight
50%
Oxygen and Hydrogen combined is about ____ of the cell’s dry weight.
25%
Nitrogen is about ____ of the cell’s dry weight
13%
Although required, Potassium, Sulfur, Phosphorus, Magnesium and Selenium combine for less than ____ of a cell’s dry weight.
5%
At least ____ other elements either are required by one or more microorganisms or if not required are still metabolized in some way.
50
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