Cellular Level Of Organization

Question 0

Cytosol

Answer 0

Fluid component of cytoplasm.

Distributes materials by diffusion

Question 1

Outer boundary of the cell

Answer 1

Plasma membrane, cell membrane or plasma lemme

Question 2

nonmembranous organells

Answer 2

cytoskeleton-made up of microtuble and microfilament

microvilli

cetrosome-containing centrioles

cillia

ribosomes

proteasomes

Question 3

cytoskeleton

Answer 3

proteins organized in the fine filaments or slender tubes

strength and support, movement of cellular structures and materials

Question 4

micorvilli

Answer 4

membrane extensions containing microfilaments

increase surface area to facilitate absorption of extracellular materials

Question 5

centrosome

Answer 5

cytoplasm containing two centrioles at right angles; each centriole is composed of 9 microtuble triplets in a 9+0 array

essential for movement of chromosomes during cell division; organization of microtubules in cytoskeleton

Question 6

cillia

Answer 6

membrane extensions containing microtuble doublets in a 9 + 2 array

movement of materials over cell surface

Question 7

Ribosomes

Answer 7

RNA + proteins; fixed ribosomes bound to rough endoplasmic reticulum, free ribosomes scattered in cytoplasm

protein synthesis

Question 8

proteasomes

Answer 8

Hollow cylinders of proteolytic enzymes with regulartory proteins at ends

breakdown and recycling of damaged or abnormal intracellular proteins

Question 9

Mitochondria

Answer 9

double membrane, with inner membrane folds(cristae) enclosing important metabolic enzymes

produce 95% of the ATP required by the cell

Question 10

Endoplasmic reticulum (ER)

Answer 10

Network of membranous channels extending throughout the cytoplasm

Synthesis of secretory products; intracellular storage and transport

Question 11

Rough ER

Answer 11

has ribosomes bound to membranes

modification and packaging of newly synthesized protiens

Question 12

Smooth ER

Answer 12

lacks attached ribosomes

lipid and carbohydrate synthesis

Question 13

Golgi apparatus

Answer 13

stacks of flattened membranes (cisternae) containing chambers

storage, alteration, and packaging of secrtory products and lysosomal enzymes.

Question 14

lysosomes

Answer 14

vesicles containing digestive enzymes

intracellular removal of damaged organelles or pathogens

Question 15

peroxisome

Answer 15

vesicles containing degradative enzymes

catabolism of fats and other organic compounds; neutralizations of toxic compounds of generated in the process

Question 16

Nucleus is made up what structures

Answer 16

nuclear envelope
nuclear pore
nucleuolus

Question 17

NUCLEUS, Nuclear envelope and nuclear pore

Answer 17

Nucleoplasm containing nucleotides, enzymes, nucleoproteins, and chromatin; surrounded by double membrane (nuclear envelope

controlof metabolism; storage and processing of genetic information; control of protein synthesis

Question 18

nucleolus

Answer 18

Dense region in a nucleoplasm containing DNA and RNA

Site of rRNA synthesis and assembly of ribosomal subunits