Active transport refers to a substance moving from areas in which it has low concentration to an area with high concentration, one example i guess is endocytosis, "<span>the taking in of matter by a living cell by invagination of its membrane to form a vacuole"</span>
I believe a cell with membrane-bound proteins that selectively bind a specific hormone is called that's hormone's target cell. Hormones are chemical substances that effect the activity of another part of the body (a target cell). The main function of endocrine glands is to secrete hormones directly into the bloodstream, the hormones serves as messengers, controlling and coordinating activities throughout the body.
Answer:
Cell 3
Explanation:
Cell 1:
4 x 3.14 = 12.56 - Surface area
4/3 x 3.14 = 4.18 - area
Cell 2:
16 x 3.14 = 50.24 - Surface area
32/3 x 3.14 = 33.47 - area
Cell 3:
36 x 3.14 = 113.04 - Surface area
108/3 x 3.14 = 113.04 - area
Ratios:
Cell 1:
12.56:4.18 = 1:1/3
Cell 2:
50.24:33.47 = 1:5/6
Cell 3:
113.04:113.04 = 1:1
I assume the answer is man-made, correct?
In my opinion, the best answer is D, clouds. the reason being is bc condensation is a gas or vapor that produces liquid aka a could. hope this helped, have an amazing day :)