vocab ch 2 Flashcards Preview

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Flashcards in vocab ch 2 Deck (21)
1

organelles

one of the small bodies in cell's cytoplasm that are specialized to perform a specific function

2

nucleus

a membrane bound organelle that controls the activities of the cell.

3

prokaryote

- an organism that consists of a single cell that does not have a nucleus.

4

eukaryotes

an organism made up of cells that have a nucleus enclosed by a membrane; eukaryotes include animals, plants, and fungi, but not archaea or bacteria.

5

cell

in biology, the smallest unit that can perform all life processes; cells are covered by a membrane and have DNA and cytoplasm.

6

cell wall

a rigid structure that surrounds the cell membrane and provides support to the cell.

7

ribosome

cell organelle composed of RNA and protein; the site of protein synthesis.

8

ENDOPLASMIC RETICULUM

a system of membranes that is found in a cell's cytoplasm and that assists in the production, processing, and transport of proteins and in the production of lipids..

9

golgi complex

cell organelle that helps make and package materials to be transported out of the cell.

10

vesicle

a small cavity or sac that contains materials in a eukaryotic cell.

11

lysosome

a cell organelle that contains digestive enzymes.

12

DNA

deoxyribonucleic acid, a molecule that is present in all living cells and that determines the traits that a living thing inherits and needs to live

13

chloroplast

organelles in plant and algae cells in which photosynthesis takes place

14

mitochondrian

- in eukaryotic cells, the cell organelle that is surrounded by 2 membranes and that is the site of cellular respiration.

15

tissue

a group of similar cells that perform a common function

16

organ

a collection of tissues that carry out a specialized function of the body

17

organ system

- a group of organs that work together to perform body functions.

18

organism

living thing; anything that can carry out life processes independently.

19

function

the special, normal, or proper activity of an organ or part.

20

structure

the arrangement of parts in an organism

21

cell membrane

a phospholipid layer that covers a cell's surface; acts as a barrier between the inside of a cell and the cell's environment.