Chapter 3- Cellular level of organization

Question 1

Plasma membrane

Answer 1

Most superficial barrier; transport through better

Question 2

Cilium and Flagellum

Answer 2

Swimming movements to move fluid past cell’s surface

Question 3

Microvillus

Answer 3

Increase surface area for plasma membrane’s transport functions

Question 4

Nucleus

Answer 4

Contain the cell’s DNA and directs cellular functions

Question 5

Nuclear envelope

Answer 5

Barrier between cytoplasm and nucleoplasm

Question 6

Nucleolus

Answer 6

Synthesis of rRNA and assembly of ribosome subunits

Question 7

Nuclear pore

Answer 7

Transport through nuclear envelope, including ribosome subunits

Question 8

Mitochondrion

Answer 8

Converts energy storage molecules into the major energy molecule, ATP, to power cellular function

Question 9

Ribosome

Answer 9

Protein synthesis

Question 10

Rough endoplasmic reticulum

Answer 10

Includes ribosomes for the synthesis and modification of proteins

Question 11

Smooth endoplasmic reticulum

Answer 11

Lipid synthesis

Question 12

Golgi apparatus

Answer 12

Sorts, modifies, and ships products from the endoplasmic reticulum

Question 13

Lysosome

Answer 13

Contains digestive enzymes to break down materials

Question 14

Peroxisome

Answer 14

Contains enzymes key for lipid metabolism and chemical detoxification

Question 15

Secretory vesicle

Answer 15

Carries materials from Golgi apparatus to plasma membrane for exocytosis

Question 16

Centriole

Answer 16

Helps assemble microtubules of the cytoskeleton

Question 17

Microtubule

Answer 17

Moves organelles and mitotic chromosomes; cutoskeleton of cilia/flagella

Question 18

Microfilament

Answer 18

Moves mostly superficial organelles, like plasma membrane during cytokinesis; cytoskeleton of microvilli/ pseudopods

Question 19

Intermediate Filament

Answer 19

Stable cytoskeleton that resists movements, holding cell together