741 vs MCP6004 for low power application
The minimum supply rail on some 741s is recommended as +/-10 volts so this might immediately exclude it. I believe the ST uA741 can work down to a single +5V rail but there are much better choices of op-amp compared to this diminutive dinosaur.

My personal list of reasons not to use a 741 are listed below: -


Minimum recommended power supply rails are +/- 10 volts
Input voltage range is typically from -Vs + 2 volt to +Vs - 2 volt
Input offset voltage is typically 1 mV (5 mV maximum)
Input offset current is typically 20 nA (200 nA maximum)
Input bias current is typically 80 nA (500 nA maximum)
Input resistance is typically 2 Mohm (300 kohm minimum)
Typical output voltage swing is -Vs + 1 volt to +Vs - 1 volt
Guaranteed output voltage swing is -Vs + 3 volt to +Vs - 3 volt
Supply current is typically 1.7 mA (2.8 mA maximum)
Noise is 60 nV/sqrt(Hz) for LM348 (quad version of 741)
GBWP is 1 MHz with a slew rate of 0.5 V/us


The LM741A is slightly better but still a dinosaur in most areas.

The MCP6004 is suitable for the 5 volt supply but I would encourage you, line by line, to make comparisons with the 741 as I have listed above.