Looking at a slide of axillary skin under the microscope, you notice the presence of glands that are absent on slides of the scalp.

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.

it's diluted or concentrated

in a diluted solution, you can add a lot more solute but in concentrated only a little more can be added

1)

i))the process of preparing food by green plants in the presence of sunlight is called photosynthesis.

ii) leaf is the site for photosynthesis.

iii) it takes place as,

6h2o+6co2=c6h12o6+602