Decide if the following statements are True or False. If the statement is False, rewrite the statement to make it True. a. Most cells are visible to the human eye without a microscope.

b. The cell carries out all functions for survival.

c. Prokaryotes are unique because they have no nucleus.

d. Eukaryotes are complex cell with organelles but with no nucleus.

e. Cells have cytoplasm.

f. Almost all living things are made of cells.

g. The cell membrane prevents some chemicals from entering the cell.

h. Plants need chloroplasts for photosynthesis.

i. Animal cells have a cell wall instead of a cell membrane.

j. In a cell, the breakdown of food molecules releases energy.

k. The cell passes waste materials from inside the cells to outside the cells.

l. Cells reproduce in orderly fashion according to the type of cells.

cells use diffusion to get substances in and out of themselves. that diffusion will occur across the cell membrane or the outer covering of the cell. because we are talking about the surface of the cell, surface area and volume are  important factors here. as a cell increases in size, its surface area and volume increase as well.  we call that the surface area to volume ratio (sa: vol).  but the catch is that  volume increases at a greater rate than surface  area. in other words, as a cell gets bigger, the sa: vol gets smaller. so a really small cell like bacteria is mostly cell membrane (surface) with very little contents (volume). a really big cell like an egg, is mostly insides with a super thin membrane. so what ends up happening is that the cell cannot efficiently diffuse all of the stuff it needs in/out to survive. therefore cell size is limited to about 100mm. so how do we make organisms bigger than 100mm? cells divide! by dividing and becoming multicellular, organisms are able to grow!   check out the diagrams i attached to see the effect of sa: vol. i hope this ! good luck!