Human Biology Chapter 3 Cell
Structure and Function questions with
correct answers.
cell theory ANS - theory which tells us that a cell is the basic unit of life; all living things are made up of
cells; new cells arise from preexisting cells
true ANS - true or false: cells are so small so that they have a larger surface area compared to volume;
this allows more nutrients to pass into the cell and wastes can exit the cell more efficiently
compound light microscope ANS - this kind of microscope has lower magnification; uses light beams to
view images; and can view live specimens
transmission electron microscope ANS - this type of microscope provides a 2-D image, uses electrons to
view internal structure, and has a high magnification with NO live specimens
scanning electron microscope ANS - this type of microscope provides a 3-D image and uses electrons to
view surface structures; high magnification and NO live specimens
prokaryotic cells ANS - one of the two major types of cells; thought to be the first cells to evolve; lack a
nucleus; represented by domains bacteria and archaea
eukaryotic cells ANS - one of the two major types of cells; have a nucleus that houses DNA; many other
membrane-bound organelles are also present; falls within the domain eukarya
plasma membrane ANS - a phospholipid bilayer that is embedded with proteins that move in space
(fluid); contains cholesterol for support; contains carbohydrates on proteins and lipids; and it is
selectively permeable (allows some things in while keeping other substances out)
diffusion; osmosis; facilitated transport; active transport; endocytosis and exocytosis ANS - 5 ways in
which things move across the plasma membrane
Structure and Function questions with
correct answers.
cell theory ANS - theory which tells us that a cell is the basic unit of life; all living things are made up of
cells; new cells arise from preexisting cells
true ANS - true or false: cells are so small so that they have a larger surface area compared to volume;
this allows more nutrients to pass into the cell and wastes can exit the cell more efficiently
compound light microscope ANS - this kind of microscope has lower magnification; uses light beams to
view images; and can view live specimens
transmission electron microscope ANS - this type of microscope provides a 2-D image, uses electrons to
view internal structure, and has a high magnification with NO live specimens
scanning electron microscope ANS - this type of microscope provides a 3-D image and uses electrons to
view surface structures; high magnification and NO live specimens
prokaryotic cells ANS - one of the two major types of cells; thought to be the first cells to evolve; lack a
nucleus; represented by domains bacteria and archaea
eukaryotic cells ANS - one of the two major types of cells; have a nucleus that houses DNA; many other
membrane-bound organelles are also present; falls within the domain eukarya
plasma membrane ANS - a phospholipid bilayer that is embedded with proteins that move in space
(fluid); contains cholesterol for support; contains carbohydrates on proteins and lipids; and it is
selectively permeable (allows some things in while keeping other substances out)
diffusion; osmosis; facilitated transport; active transport; endocytosis and exocytosis ANS - 5 ways in
which things move across the plasma membrane
