Cells require glucose as a source of energy to carry out life processes. large molecules like glucose cross the cell's plasma membrane by
a. being pumped through ion channels.
b. active transport through protein channels.
c. passive diffusion through the lipid bilayer.
d. facilitated diffusion through protein channels.

Aflashlight produces light using energy from the batteries. in which order does the energy change form? a. from chemical to electric to light energy b. from electric to light to chemical energy c. from electric to chemical to light energy d. from light to electric to chemical energy

My question says on my assignment. read the following scenarios and decide which of the properties of life are being described. the first one is. katherine stopped on the way to school to grab some donuts. 2. because a dog cannot sweat, it has to pant in order to stay cool. 3. an elephant trun had no bone but 4,000 muscles. i have no idea what i am supposed to anwer. i can't find the answer in my notes or book that i can understand anyway

Describe the response the kidneys have to dehydration and excessive water intake. what happens to the concentration of urine in each case ?