Cell Organelles

Question 1

Site of ribosomal assembly

Answer 1

Nucleolus

Question 2

Contains copies of genes for rRNA

Answer 2

Nucleolus

Question 3

Complicated areay of vesicular spaces separated from cytoplasmic fluids or cytosol by a system of membranes

Answer 3

Endoplasmic Reticulum

Question 4

Lined on the cytoplasmic surface with ribosomes

Site of protein synthesis

Answer 4

Rough ER

Question 5

For storage and secretion of protein products outside cell

Answer 5

Rough ER

Question 6

Absence of ribosomes

Enzymes present differs according to function of the system

Answer 6

Smooth ER

Question 7

Falttened sacs or vesicles contunuous with ER to which newly syntehsized proteins are transported and stored

Answer 7

Golgi Apparatus

Question 8

Site of glycosylation

Answer 8

Golgi Apparatus

Question 9

Site of cellular respiration and production of ATP

Answer 9

Mitochondria

Question 10

Number and size may reflect the need for energy and particular nature of metabolic activity occurring in the tissue

Answer 10

Mitochondria

Question 11

Contains the enzymes of citric acid cycle, beta-oxidation of fatty acids, electron transport chain and oxidative phosphorylatiob

Answer 11

Mitochondria

Question 12

Contain their own DNA and reproduce by dividing in two

Answer 12

Mitochondria

Question 13

Vesicles surrounded by membrane containing hydrolytic and degradative enzymes

Answer 13

Lysosomes

Question 14

Functions to digest material ingested by endocytosis and recycle cellular components

Answer 14

Lysosomes

Question 15

Also known as microbodies

Answer 15

Perixosomes

Question 16

Contain oxidative enzymes and catalse which synthesize degrades hydrogen peroxide

Answer 16

Lysosomes

Question 17

Function to protect sensitive cell components from oxidative attacks

Answer 17

Peroxisomes

Question 18

Array of filaments; give the cell its shape and ability to move; responsible for the arrangement and internal motion of its organelles

Answer 18

Cytoskeleton

Question 19

Composed of protein tubulin; form the supportive framework that guided the movement of organelles within a cell; constituent of cilia

Answer 19

Microtubules

Question 20

Consist of actin; form contractile assemblies that is responsible for intracellular movements

Answer 20

Cytoskeleton

Question 21

Prominent in parts of the cell subject to mechanical stress

Answer 21

Intermediate filaments

Question 22

Aqueous mateix that remains after insoluble components of the cytoplasm are removed

Answer 22

Cytosol

Question 23

Major component is cellulose; accounts for structural strength

Answer 23

Cell wall in Plants

Question 24

Resembles mitchondria; generate ATP to drive photosynthetic reaction forming carbohydrates and other products

Answer 24

Chloroplast

Question 25

Encloses interconnected stacks of sacs called thylakoids which contain chlorophyll

Answer 25

Stromata

Question 26

Typically occupy 90%of volume mature cells; storage depots for nutrients, waste and specialized materials such as pigments

Answer 26

Vacuole

Question 27

Holds the cell together; serves as selective barrier permitting the entrance of essential nutrients and preventing loss of needed substances; secretes waste products; binds certain regulatory substances thru its receptors

Answer 27

Plasma Membrane

Question 28

Repository of genetic information

Answer 28

Nucleus