Lect 4 - Cell Anatomy (Organelles)

Question 1

Cytosol (Ion Composition)

Answer 1

High in potassium
Low in sodium as compared to ECF

Question 2

Cytosol (Composition)

Answer 2

High concentration of proteins
Low concentration carbohydrates
Mostly negative as a result
Large reserve of a.a. and lipids

Question 3

Microfilaments

Answer 3

Anchors cytoskeleton to integral proteins
Anchors cell membrane to cytoplasm
Made up of Actin
Important for movement and cell shape
Made up of actin, which interacts with myosin during contractions

Question 4

Intermediate Filaments

Answer 4

Provides strength
Stabilizes organelle

Question 5

Thick Filaments

Answer 5

Made up of myosin
Lots found in muscle cells, used in muscle contraction

Question 6

Microtubules

Answer 6

Made up of tubulin
(Main Component of Cytoskeleton)

Important for cell shape and moving organelles
Forms Cilia and Flagella
Forms centrioles to be used in cell reproduction

Question 7

Mitochondria

Answer 7

Produces ATP
Double membrane

Question 8

Nucleus

Answer 8

Control system and contains chromosomes
Double membrane

Question 9

Endoplasmic Reticulum

Answer 9

Smooth and Rough
Smooth = Synthesizes sterol, lipids, and hormones
Rough = Produces proteins

Question 10

Golgi Apparatus

Answer 10

Modifies Proteins

Question 11

Lysosomes

Answer 11

Contains cellular digestive enzymes

Question 12

Peroxisome

Answer 12

Contain catalase to break down hydrogen peroxide

Question 13

Neurofilaments

Answer 13

Supports the axons of nerves