Transcription factors occur in different combinations in different types of cell How does this allow for variety in cell types?

Diffusion and osmosis are forms of passive transport

What organ is the first to receive nutrients that have been absorbed from the digestive tract?

How have crops been modified? a.plants have been made more susceptible to pests b.plants have been made resistant to herbicides c.plants have been made more susceptible to herbicides d.plants have been modified to have reduced yield