Consider the following metabolic reaction:
phosphoarginine + adp ? > arginine + atp
which of the following statements is true?
i) this reaction is a substrate level phosphorylation reaction
ii) this reaction is catalyzed by an isomerase
iii) this reaction is a phosphate transfer reaction
iv) this reaction is a redox reaction
v) this reaction is a coupled reaction
a) i and iii are true
b) iv and v are true
c) i, iii, and v are true
d) i, ii, iii, iv and v are all true
e) i and ii are true

C

Explanation:

* A phosphate level phosphorylation reaction is one that results in the generation of ATP.

*The reaction involves a phosphate transfer to ADP to form ATP.

*A coupled reaction in biochemistry is a form of reaction in which a form of energy is produced from another form of energy e.g. generating ATP (a higher energy compound) from ADP (a lower energy compound).

the density of gold = 19.3 g/cm3

the relation between density and mass and volume is

density = mass / volume

given :

mass of gold = 13 g

density = 13g / volume = 19.3

volume = 13 /19.3 = 0.67 cm^3

thus volume of gold nugget = 0.67 cm^3