NATS 1675 Lecture Notes - Lecture 1: Homeostasis, Nucleoplasm, Plastid

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6 Feb 2016
Department
Course
Plant&Cell&Table:&
&
ORGANS:&
FUNCTION:&
- Nucleus!is!the!largest!structure!in!
the!cell!
- Control!center!
- Surrounded!by!a!bilayer!membrane!
with!pores!
- Plays!the!central!role!in!cell!division,!
and!
- Directs!the!metabolic!activities!of!the!
cell.!
!
- Nucleoplasm&contains!the!nucleus!
contents!such!as:!
- 1.!Chromatin!(is!lengthened!
chromosomes!of!DNA)!
- 2.!Nucleolus!!
- The!nucleolus!produces!r-RNA!
!
- Cell&Membrane&inside!the!cell!wall&
- Selectively!permeable&
- Provides!support!and!protection!
- Controls!movement!of!materials!in!
and!out!of!the!cell!
- Barrier!between!cell!and!its!
environment!
- Maintains!homeostasis!
- Mitochondria&is!known!as!the!power!
house!of!the!cell!
- Glycolysis,!ETC!and!CAC!
- Has!an!outer!membrane!and!
- Inner!folded!membrane!called,!Cristae!!
!
- Produces!ATP!energy!for!most!cells!
!
- Endoplasmic&Reticulum&(ER)&a!
network!of!tubes!and!membranes!
- Contains!ribosomes!
- Carries!materials!through!the!cell!
- Cell&Wall&is!an!outer!layer!
- Rigid,!strong,!and!stiff!
- Made!of!cellulose!!
- Provides!support!and!protection!
- Allows!H2O,!CO2,!and!O2!to!pass!into!
and!out!of!the!cell!!
- Plastids&are!storage!organelles&
- Help!in!storage!of!plant!products!
- Eg.!Starch!for!synthesis!of!fatty!acids!
and!terpenes!
!
!
- Chloroplast&is!a!plastid!with!
chlorophyll!(green!pigment).!It!traps!
light!energy!and!converts!it!to!
chemical!energy!by!the!process!of,!
photosynthesis!!
- Help!in!carrying!out!the!process!of!
photosynthesis!to!produce!food!for!
plants!
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