ions Flashcards
(24 cards)
why are inorganic ions important
they are important in many cellular processes like muscle contraction, nervous coordination and mainting water potential in cells and blood
are the 2 groups of inorganic ions
macronutrients and micronutrients
what are macronutrients + examples
macronutrients are needed in small concentrations e.g magnesium and iron
what are micronutrients + examples
micronutrients are needed in minute (trace) concentrations e.g zinc and copper
name the key macronutrients/inorganic ions
magnesiums - Mg2+
iron - Fe2+
phosphate ions - PO43-
calcium - ca2+
nitrate - NO3-
biological role of magnesium
a constituent of chlorophyll so essential for photosynthesis and mammals need it for their bones
what is chlorosis
chlorosis is a condition where the leaves of plants turn yellow if plants don’t have magnesium as they can’t make chlorophyll
what happens to a plant when it has chlorosis and why
growth is often stunted due to a lack of glucose
biological role of iron
constituent of haemoglobin, which transports oxygen in red blood chells
what can a lack of iron in the human diet cause
anemia
biological role of phosphate
used for making nucleotides including ATP, DNA and RNA also a constituent of phospholipids found in biological membranes. can also harden bones
biological role of calcium
hardens bones and teeth and is a component of plant cell wall providing strength
biological role of nitrate
needed for making nucleotides, inducing DNA, RNA and ATP and is also needed for amino acid formation
what’s the role of calcium ions in plants
in plants calcium hardens bones and teeth
what’s the role of calcium ions in animals
in animals calcium is a component of the plant cell wall providing strength
which ion is a necessary component of chlorophyll + why
as it helps absorb light energy during photosynthesis
which ion is a component of haemoglobin + why
it allows haemoglobin to bind to transport oxygen in red blood cells
what does organic mean
organic means a compound that contains carbon
what does inorganic mean
inorganic means a substance that doesn’t contain more than 1 carbon atom
what’s a compound
a compound is a substance formed when 2 or more different elements are chemically bonded together
what is an ion
an ion is a atom or a group of atoms that have an electrical charge
what’s an element
an element is a pure substance, they can’t be broken into other or simpler substances
what is an element made up of
an element is made of an atom
what’s a molecule
a molecule is a group of 2 or more atoms held together by chemical bonds
