Biology Grade 10 Unit 2 Quiz/ Vocabulary 1

Front 1

A cell that does not have a nucleus or other membrane-bound organelles

Back 1

Prokaryotic cell

Front 2

Cell that has a nucleus and other membrane-bound organelles

Back 2

Eukaryotic cell

Front 3

Loose combination of DNA and proteins that is present during interphase

Back 3

Chromatin

Front 4

Organelle that contains enzymes

Back 4

Lysosome

Front 5

Small cylinder-shaped organelle made of protein tubes arranged in a circle; aids mitosis

Back 5

centriole

Front 6

Solution that has a higher concentration of dissolved particles compared with another solution

Back 6

Hypertonic solution

Front 7

Solution that has a lower concentration of dissolved particles compared with another solution

Back 7

Hypotonic solution

Front 8

Energy requiring movement of molecules across a membrane from a region of lower concentration to a region of higher concentration

Back 8

Active transport

Front 9

Diffusion of molecules assisted by protein channels that pierce a cell membrane

Back 9

Facilitated diffusion

Front 10

Diffusion of water molecules across a semipermiable membrane from an area of higher water concentration to an area of lower water concentration

Back 10

Osmosis

Front 11

The arrangement and movement of the molecules that make up a cell membrane

Back 11

Fluid mosaic

Front 12

Movement of dissolved molecules in a fluid of gas from a region of higher concentration to a region of lower concentration

Back 12

Diffusion

Front 13

Release of substances out a cell by the fusion of a vesicle with the membrane

Back 13

Exocytosis

Front 14

Uptake of liquids or large molecules into a cell by inward folding of the cell membrane

Back 14

Endocytosis

Front 15

Difference in the concentration of a substance from one location to another

Back 15

Concentration gradient

Front 16

Long hollow tubes that give the cell its shape and act as "tracks" for the movement of organelles. When cells divide, these form fibers that pull half of the DNA into each new cell

Back 16

Microtubule

Front 17

tiny threads that enable cells to move and divide. They play an important role in muscle cells, where they help the muscle contract and relax.

Back 17

Microfilament

Front 18

A dense region where tiny organelles essential for making proteins are assembled.

Back 18

Nucleolus