Biology 1002B Study Guide - Midterm Guide: Microrna, Transfer Rna, Complementary Dna

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greenlocust120

21 Apr 2012

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In aerobic bacterium etc is on plasma membrane it is a competing rxn with all other plasma membrane f(x)s. Etc is in mitochondria/ chloroplast, more amount of their plasma membrane is dedicated to etc which is one reason why euk has higher potential to create atp. Bigger so usually encodes more proteins (therefore genes) Have the luxury to do more since they can produce more energy. Dna mrna dna rrna - mrna trna - mrna snrna. Codon-anticodon snrna base pairs with itself making it catalysic. During degradation or inactivation snrna (pre)m-rna mirna - mrna. Interact directly with transcription factors to potentially initiate multiple transcriptions the particular set activators present w/in a cell at a given time is responsible for determines which genes in that cell are expressed. Chemiosmosis the ability of cells to use the proton motive force or any other store of energy to do work (ex. pump things across membrane, rotation of flagella)

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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

29 Most proteins destined to enter the endoplasmic reticulum _________.

(a) are transported across the membrane after their synthesis is complete.

(b) are synthesized on free ribosomes in the cytosol.

(d) are keep binding to Signal recognition particle (SRP) while they are translated.

30 Which of the following choices reflects the appropriate order of locations through which a protein destined for the plasma membrane travels?

(a) lysosome â endosome â plasma membrane

(b) ER â lysosome â plasma membrane

(d) ER â Golgi â plasma membrane

31 Which of the following statements about vesicle budding from the Golgi is false?

(a) COPII can initiate vesicle budding on Golgi membrane.

(b) Some vesicles budded from Golgi membranes move towards ER.

(d) Clathrin molecules act at the cytosolic surface of the Golgi membrane.

32 Which of the following statements is false?

(a) The signal sequences on mitochondrial proteins are first bound to translocator on outer membrane after translation.

(b) Most mitochondrial proteins are not imported from the cytosol but are synthesized inside the mitochondria.

(c) Chaperone proteins in the mitochondria facilitate the movement of proteins across the outer and inner mitochondrial membranes.

(d) Mitochondrial proteins cross the membrane in their unfolded state.

orangeplatypus673

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»¿

Biology 1002B Study Guide - Midterm Guide: Microrna, Transfer Rna, Complementary Dna

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