Biology 1001A Lecture Notes - Transmission Electron Microscopy, Nuclear Membrane, Nucleoid

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chocolatedog578

29 Sep 2012

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Transmission electron micrograph used to take image of cell. May have one or two membranes around the outside depending on which prokaryotic cell it is. Not much going on in the inside, mainly a central nucleoid region. And then some cytoplasm around the outside of the nucleoid region. Have internalized their membranes to create some of the now familiar internal membranes, the nuclear envelope and the er. Eukaryotes have internal membranes (e. g. around nucleus. Some internal membranous organelles were the result of endosymbiosis where early cells entered into very intimate relationships between aerobic bacterium that have now become mitochondria (used to be free living bacteria) A series of woven proteins that help maintain the shape of cell (cables, pullies and ropes) Communicates from the cell membrane/surface all the way to the nucleus. Very important in moving chromosomes around during cell division.

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Can you guys please help me fix this

Instructions: Review the content in Chapter 3 of the textbook and prepare a table or diagram that compares the components and characteristics of prokaryotic and eukaryotic cells. Be sure to include both (1)similarities- characteristics in common and (2) differences- characteristics unique to each cell type.

My project:

Prokaryotic and Eukaryotic Cells

Similarities between Prokaryotic and Eukaryotic :

- Both are made of cells.

- Cell is covered by a lipid bilayer membrane

- Both reproduce and multiply for grows

- Their genetic material is either DND or RNA

Differences:

Prokaryote eukaryote

absent	nucleus	present
smaller	ribosome	larger
Fold and condense prokaryotic dna	dna	Wrap their dna around proteins called histones
absent	Membrane bound organelle	present
absent	chloroplast	present
Absent	mitochondria	present

My teachers notes :

Both cell types have cytoplasm.

Be specific and include a list of membrane bound organelles in eukaryotic cells.ï»¿ï»¿ï»¿ï»¿ï»¿ï»¿ï»¿ï»¿ï»¿ï»¿ï»¿ï»¿ï»¿ï»¿ï»¿ï»¿ï»¿

Question 1

The presence of which of the following is a distinguishablecharacteristic between prokaryotic cells and eukaryotic cells?

a. Translation using ribosomes

b. the ability to metabolize simple sugars

c. The ability to replicate a DNA genome

d. internal membranes making separate compartments for differentfunctions

Question 2

Which of the following statements is FALSE regarding phosphategroups

a. phosphate groups are added to proteins found only on theoutside of cells or inside membrane-bound organelles

b. phosphate groups can be added to the amino acids tyrosine,serine, and threonine to control functions of proteins

c. phosphate groups are hydrophilic

d. phosphate groups can be found in some types of proteins,nucleic acids and lipids

Question 3

The Endosymbiont Theory is supported by which of thefollowing?

a. Endosymbiosis occurs naturally in modern times

b. Mitochondria and chloroplasts have circular genomes seperatefrom the nuclear genomes

c. Mitochondria and chloroplasts have other biochemicalcharacteristics more similar to prokaryotes than eukaryotes

d. all of the above

limehyena595

Thinking about the number of different cell types on the planet has changed over the years. We now recognize

A. 2 basic cell types: prokaryotes and eukaryotes

B. 3 basic cell types: bacteria, archaea and eukaryotes

C. 2 basic cell types: that have a nucleus and cells that have an internal membrane system

D. 3 basic cell types: cells with a nucleus, cells with endoplasmic reticulum, and cells with mitochondria

E. only 1 type of cells: cells with DNA as genetic material

fuchsiadog167

Biology 1001A Lecture Notes - Transmission Electron Microscopy, Nuclear Membrane, Nucleoid

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