Inorganic Ions

Question 1

What is an ion?

Answer 1

Charged particle

Question 2

What is a cation?

Answer 2

A positively charged particle

Question 3

What is an anion?

Answer 3

Negatively charged particle

Question 4

What are inorganic ions?

Answer 4

They don’t contain carbon

Question 5

Describe haemoglobin

Answer 5

1. large protein that carries O₂ around the body in red blood cells
2. made up of our different polypeptide cahins each with an iron ion (Fe²⁺) at the centre
3. the iron ion attracts O₂ and binds it to the haemoglobin
4. at that point, Fe²⁺ becomes Fe³⁺ ion until the oxygen is released

Question 6

Explain pH scale using H⁺

Answer 6

pH is calculated by the concentration of H+

the more H+ the greated the acidity

*NB more H+ = lower pH…

WHY?

Because pH represents the inverted powers/indices of the concentration

so pH 1 = 1/10¹ or 1/10 concentration

pH 2 = 1/10² or 1/100 concentration, etc.

Question 7

Whad to sodium ions do?

Answer 7

They help transport glucose and amino acids across membranes

Sodiums work with glucose molecules to open up gates in the membrane, temporarily working together to open up the membrane so both can get in using a co-transporter

Question 8

What is the function of phosphate ions?

Answer 8

They are essential components of DNA and RNA allowing nucleotides to bond as polynucleotides.

When a phosphate ion PO₄³⁺ is attached to another group, it’s called a phosphate group.

The bonds between phosphate groups store energy used in ATP/ADP reactions