Question

question 9
1 pts
water droplets forming a dome and clinging to the hood of a freshly waxed car
is an example of:
both cohesion and adhesion
adhesion
cohesion
question 10
1 pts
a screen door allows breezes to enter and aromas to exit, but keeps out insects.
its function most resembles
the plasma membrane.
the er lumen.
a ribosome.
the cytosol.

Explanation:

Question 9

• Cohesion is the attraction between water molecules (causing the dome as molecules stick together). Adhesion is attraction between water and other substances (the waxed car surface). The droplets cling (adhesion) and form a dome (cohesion), so it's both.

• The plasma membrane is selectively permeable: it allows certain substances (like small molecules, gases) to pass while blocking others (like large or unwanted particles). A screen door allows breezes/aromas (small "substances") and blocks insects (larger, unwanted), similar to the plasma membrane's function. The ER lumen is a space in the ER, a ribosome makes proteins, and cytosol is cell fluid—none match this selective permeability like the plasma membrane.

Answer:

Both cohesion and adhesion

Question 10