Chapter 6

Question 1

Mitochondria

Answer 1

Power house- provides energy
Site of cellular respiration
In all eukaryotes
Structure
Double membranes- outer smooth- inner if folded/cristae
Inner membrane space- matrix where DNA and ribosomes are found

Question 2

Cytoskeleton

Answer 2

Network of protein fibers extending throughout the cytoplasm like a scaffolding- composed of 3 types of fibril proteins.
Microtubules/tubulins
Microfilaments/ actin
Intermediate filament

Organizes activities in cell
Anchors or mobilizes organelles
Provides support and shape to a cell

Question 3

Microtubules/tubulins

Answer 3

Thick hollow shape protiens
Shape the cell
Guide the movement of organelles
Separate chromosomes during cell division

Question 4

Microfilaments/ Actin

Answer 4

Thinnest components
Bears tension
Forms cortex inside plasma membrane to support cell shape

Question 5

Intermediate filaments

Answer 5

Supports cell shape and fix organelles in place
Permanent cytoskeleton fixture

Question 6

Chloroplast

Answer 6

Part of plastid group
The site of photosynthesis
Contains chlorophyll and enzymes

Question 7

Vacuoles

Answer 7

diverse compartments
Food vacuoles-formed bybphagocytosis
contractile vacuoles- pump excess water out of cells
central vacuoles- found in many mature plant cells- hold organic compounds and water