Ch 7 - A Tour Of The Cell

Front 1

Nucleus
1. Size (diameter)
2. Parts
3. Function

Back 1

1. 5 µm in diameter

2. 3 Parts:
a. Chromatin = Dna + proteins
b. Nucleolus = Ribosome synthesis
c. Nuclear Envelope = dbl membrane with pores

3. Directs protein synthesis (mRNA)
mRNA to Nuclear pores to Cytoplasm

Front 2

Nuclear Envelope

1. Define
2. Parts
3. Function

Back 2

1. Dbl membrane ea. w/ lipid bilayer & proteins

2a. Nuclear Lamina - inner membrane = shape
2b. Pore complex - regulates entry/exit of large macromolecules and particles

3. Separates contents of nucleus from cytoplasm

Front 3

Pore Complex

1. Define
2. Function

Back 3

Intricate protein structure b/w inner and outer nuclear membranes

Regulates entry/exit of large macromolecules and particles

Front 4

Nuclear Lamina

1. Define
2. Function

Back 4

1. Protein filaments that line the inner surface of nuclear envelope

2. Nucleus shape

Front 5

Chromatin

1. Define

Back 5

1. DNA + proteins in nucleus

Front 6

Chromosomes

1. Define
2. #

Back 6

Chromatin thick and condensed (coiled)

Somatic Cell = 46
Germ cell = 23

Front 7

Nucleolus

1. Define
2. Function

Back 7

1. Fibers adjoining part of the chromatin

2. Synthesis rRNA & assemble proteins