Compared to the concentration of the proteasome, the concentration of the substrate is larger by what factor?

"purified rabbit proteasome (2 nm) was incubated in the presence of reaction was initiated by addition of the peptide (100 um)"

a) 5 × 101
b) 5 × 102
c) 5 × 103
d) 5 × 104

Which of the following systems in absorbing oxygen and releases carbon dioxide

I’m stuck on this question cuz i’m stupid sksksksk

Hydrilla (hydrilla verticillata) is an invasive aquatic plant and one of the most serious aquatic pests in florida. hydrilla has already been introduced to hundreds of bodies of water throughout florida, hydrilla is difficult to control because it grows rapidly and survives in many different water depths and conditions. hydrilla • describe how hydrilla affects native plant and animal species. include both a biotic and an abiotic limiting factor. • suggest one biotic and one abiotic recommendation that could slow the spread of hydrilla