ion
a charged atom or molecule that has different number of protons and
electrons
cations
positively charged ions (when they lose an electron)
anions
negatively charged ions (when they gain an electron)
importance of ions
- they conduct electricity
- can act as solute which are used i...
- defence - part of immune system (e.g. antibodies)
- transport - carry vital substances to cells e.g. haemoglobin
- receptor - control entry and exit of cells, activation of enzymes, stimulate
endocrine glands
- contractile - regulate strength and speed of heart contraction
lipids
✓ organic fats and fatty acids
nucleic acid
✓ polymers of nucleotides including DNA and RNA that code for proteins
high energy compound (ATP/ADP)
✓ ATP used to store energy, power synthesis, movement and transport
ADP used in energy metabolism
inorganic compounds
Master01 | October, 2024/2025 | Latest update
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