Question

17. The transport of substances across the
plasmalemma against the concentration
gradient is:
a. Active transport
b. Passive transport
c. Bulk transport
d. All of the above
18. Unicellular freshwater animals and most
plant cells tend to gain water through the
process of:
a. Diffusion
b. Osmosis
c. Imbibition
d. Facilitated diffusion
19. Fungal cellulose is:
a. Murein
b. Chitin
c. Peptidoglycan
d. Xylan
20. The cementing material between the cell
walls of two adjacent cells is called:
a. Plasmodesmata
b. Primary wall​

Answer 1

Answer:

17=a

18 = a

19=b

20=a

all are correct.. surely

hope it help's

Answer 2

Answer:

1. Active transport

2. Diffusion

3. Chitin

4. It is secondary wall

option not given