1B Inorganic Ions

Question 1

What is an ion?

Answer 1

atom that has an ELECTRIC charge

Question 2

What is the name of an ion with a positive charge?

Answer 2

cation

Question 3

What is the name of an ion with a negative charge?

Answer 3

anion

Question 4

What compound doesn’t an inorganic ion contain?

Answer 4

Carbon

Question 5

What ions are in Hb and what are their importance?

Answer 5

> IRON ions (Fe2+)
Hb transports O2 around the body
It is the iron ions that O2 BINDS to (which forms Fe3+ until O2 is UNLOADED)

Question 6

What ions determine the pH of an environment and what are their importance?

Answer 6

> HYDROGEN ions
The MORE hydrogen ions there are, the LOWER the pH (more ACIDIC)
the pH of an environment has an effect on ENZYME-CONTROLLED REACTIONS

Question 7

What ions are important in transport and what are their importance?

Answer 7

> SODIUM ions

> Substances like GLUCOSE and AMINO ACIDS can be transported across the CSM ALONGSIDE SODIUM in CO-TRANSPORT

Question 8

What is the importance of phosphate ions attached to DNA/RNA?

Answer 8

ESTER BONDS form between the PHOSPHATE GROUP and 5th/3rd CARBON of the two nucleotide molecules

Question 9

What is the importance of phosphate ions attached to ATP?

Answer 9

The BONDS between the PHOSPHATE GROUPS in ATP STORES ENERGY that is released in HYDROLYSIS reactions which release andphosphate group to produce ADP

Question 10

Where do inorganic ions occur?

Answer 10

> Present in SOLUTION in the CYTOPLASM of CELLS

> In the BODY FLUIDS of organisms

Question 11

What determines an ion’s specific role?

Answer 11

Its specific properties