Question

condensation reactions and hydrolysis reactions are two important (and opposite) classes of chemical reactions performed by cells. classify each of the reactions described below as either a condensation reaction, a hydrolysis reaction, or neither. items (5 items) (drag and drop into the appropriate area below) categories condensation h2o2 + h2o2 yields 2 h2o + o2 h2o. ch3oh + hcl yields ch3cl + h2o glucose + glucose yields maltose hydrolysis atp + h2o yields adp + phosphate neither phosphatidylinositol-4,5 -bisphosphate (pip2) + h2o yields diacylglycerol (dag) + inositol-1,4,5 -trisphosphate (ip3)

Explanation:

Step1: Recall reaction - type definitions

Condensation reaction: two molecules combine to form a larger molecule with the loss of a small molecule (usually water). Hydrolysis reaction: a molecule is split into two smaller molecules with the addition of water.

Step2: Analyze each reaction

• $H_2O_2 + H_2O_2

ightarrow2H_2O + O_2$: This is a decomposition reaction, not condensation or hydrolysis. So it is 'neither'.

• $CH_3OH+HCl

ightarrow CH_3Cl + H_2O$: This is a substitution reaction, not condensation or hydrolysis. So it is 'neither'.

• glucose + glucose $

ightarrow$ maltose + $H_2O$: Two glucose molecules combine to form maltose with the loss of water. This is a condensation reaction.

• $ATP + H_2O

ightarrow ADP + phosphate$: A molecule (ATP) is split into two smaller molecules (ADP and phosphate) with the addition of water. This is a hydrolysis reaction.

• phosphatidylinositol - 4,5 - bisphosphate ($PIP_2$)+$H_2O

ightarrow$ diacylglycerol (DAG)+ inositol - 1,4,5 - trisphosphate ($IP_3$): A molecule ($PIP_2$) is split into two smaller molecules (DAG and $IP_3$) with the addition of water. This is a hydrolysis reaction.

Answer:

$H_2O_2 + H_2O_2
ightarrow2H_2O + O_2$: neither
$CH_3OH+HCl
ightarrow CH_3Cl + H_2O$: neither
glucose + glucose $
ightarrow$ maltose + $H_2O$: condensation
$ATP + H_2O
ightarrow ADP + phosphate$: hydrolysis
phosphatidylinositol - 4,5 - bisphosphate ($PIP_2$)+$H_2O
ightarrow$ diacylglycerol (DAG)+ inositol - 1,4,5 - trisphosphate ($IP_3$): hydrolysis