CH4

Cell theory states that __________ are the basic units of life.

cells

All living organisms are made of __________.

cells

Magnification is the process of __________ an object in appearance.

enlarging

Resolution is the ability to distinguish __________ as separate.

2 adjacent structures

Contrast is the ability to distinguish the __________ from the background.

specimen

The __________ index is the bending of light.

refractive

Bright-field microscopy provides __________ magnification and resolution compared to electron microscopy.

lower

Electron microscopy requires __________ organisms.

dead/non-living

All cells have a __________ that encloses the cell.

plasma membrane

The cytoplasm is made of __________ in which other components of the cell are found.

cytosol

The __________ holds the genetic material of the cell.

DNA

Ribosomes are responsible for __________.

making proteins

Prokaryotic cells do not have a __________ or other membrane-bound components.

nucleus

In prokaryotic cells, most have cell walls made of __________.

peptidoglycan

As cells get bigger, __________ increases faster than surface area.

volume

A high surface-to-volume ratio allows materials to move in and out of the cell more __________.

efficiently

The plasma membrane moves __________ in and out of the cell.

materials

The cytoplasm supports the cell's __________.

components

The nuclear envelope regulates what goes in and out of the __________.

nucleus

The nucleolus is where we make __________ RNAs.

ribosomal

Mitochondria are responsible for __________ production.

ATP

Lysosomes are known as the "__________" of the cell.

recycling center

The Golgi apparatus modifies __________ and distributes them to where they need to go.

proteins

Microfilaments help the cell change __________ and move.

shape

Cilia are __________ and numerous compared to flagella.

shorter

Centrosomes separate __________ during cell division.

DNA

Plant cells have a __________ wall which animal cells do not.

cell

Chloroplasts are responsible for making __________.

sugar

Which type of cells do not have a nucleus? __________.

Prokaryotic cells

Animal cells have __________ that plant cells do not.

centrosome and lysosomes

Embryonic stem cells are involved in the development of __________ organisms.

multicellular