BIOL2000 Lecture Notes - Lecture 3: Nuclear Localization Sequence, Lipid Bilayer, Nuclear Pore

42 views10 pages

yellowhippopotamus301

16 Jan 2017

School

Department

Course

Professor

For unlimited access to Class Notes, a Class+ subscription is required.

Document Summary

Nucleus: stores cell"s genome and site of rna synthesis. Mitochondria: produces atp: energy currency of cell. Plasma membrane: phsopholipids and proteins that regulate transport of materials in and out of the cell. Cytoskelton: netowrk of protein filaments that provide structure. Golgi apparatus: modifies and sorts proteins as they move into and out of the cell. Endomembrane system evolution: doesn"t include mitochondria or chloroplast. Prokaryotes to eukaryotes by folding in/pinching off of plasma membrane. Definition: genome is surrounded by intracellular membrane and can grow or multiple independently. Mitochondria formed by engulfed prokaryotes but isnt necessary. Mito and chloro have own genomes and grow indep. Endomembrane system: set of intracellular organelles interconnected by vesicular traffic. Ex: acid hydrolases are sysntehsized in er, processed in golgi, shipped to lysosome. Vesicular transport: membrane structres bud off and fuse with others. Donor compartment: bud: vesicle: fuse: target compartment. Lipid bilayer is fluid and can intramix.

Related Questions

1. Parts of the cell:

Answer the following questions pertaining to parts of the cell listed below:

Nucleus, Mitochondria, Golgi, Endoplasmic Reticulum, Lysosome, Plasma membrane, ribosome and peroxisome (10 points total)

a) Is it in both prokaryotes and eukaryotes?

b) Is it enclosed by a lipid membrane?

c) Does it contain DNA?

d) Is it involved in protein synthesis?

e) Does glycosylation occur here?

f) Does lipid biosynthesis occur here?

g) Does it have a role in phagocytosis?

h) Is it required for detoxification?

i) Is it a water storage organelle?

j) Is it involved in protein export? If so how?

lemondonkey187

Question 1

Light microscopes

	A.	typically provide more resolution than an electron microscope
	B.	work by reflecting electrons off the surface of an object being studied
	C.	use light and glass lenses to magnify an image

Question 2

In the plasma membrane, the phospholipid heads

	A.	are hydrophilic and face outward toward the aqueous solution on both sides of the membrane
	B.	are hydrophobic and face outward toward the aqueous solution on both sides of the membrane
	C.	are hydrophobic and face inward, shielded from water

Question 3

The nucleus of a cell

	A.	is surrounded by a single layer of membrane.
	B.	contains DNA
	C.	is the primary location of protein synthesis

Question 4

Which location in the cell is unlikely to contain ribosomes or ribosomal subunits?

A.		endoplasmic reticulum
B		plasma membrane
C.		Cytoplasm

Question 5

The main function of the rough endoplasmic reticulum is the production of

A.		membrane and proteins secreted by the cell
B.		mitochondria and proteins secreted by the cell
C.		hydrogen peroxide

Question 6

The Golgi apparatus

A.		is the site of glucose breakdown
B.		stores, modifies, and packages proteins
C.		strings together amino acids to produce proteins

Question 7

The function of mitochondria is

		A. cellular respiration
		B. photosynthesis
		C. lipid synthesis

Question 8

Which of the following statements about the cytoskeleton is false?

		A. The cytoskeleton helps to support cell
		B. Once laid down, the elements of the cytoskeleton are fixed and remain permanently in place
	C.	The cytoskeleton is composed of three types of fibers: microfilaments, microtubules, and intermediate filaments

21) Which of the following is not primarily used for attachment?

A. glycocalyx

B. flagella

C. pili

D. fimbria

E. S layer

30) You have isolated DNA from an E. coli bacteria. The DNA would originate from what structures? (CIRCLE ALL THAT APPLY)

A. inner plasma membrane

B. mitochondria

C. microcompartments

D. nucleus

E. plasmids

31) Many cellular reactions require multiple enzymes. For efficiency, bacteria will package these enzymes together within:

A. fimbria

B. inclusion bodies

C. lysosomes

D. microcompartments

E. vesicles

32) Why can archaea be considered a separate domain from bacteria?

(CIRCLE ALL THAT APPLY)

A. Archaea ribosomal structure and protein synthesis are similar to eukaryotes.

B. They exhibit a novel method of DNA compaction.

C. Like eukaryotes, they contain simple, membrane-bound organelles.

D. Their cell walls are composed of different substances than bacterial or eukaryotic cell walls.

E. They contain a circular chromosome.

33) How are eukaryotic flagella different from bacterial flagella?

A. They are much bigger in size.

B. They move in a whip-like fashion, as opposed to a circular fashion.

C. They are covered by the plasma membrane.

D. A & B only

E. all of the above

36) The primary function of of the rough endoplasmic reticulum is:

A. aerobic respiration

B. the breakdown of phagocytized material

C. assembly of ribosomal subunits

D. polysaccharide and lipid modification of proteins

E. protein synthesis of membrane-bound and secreted proteins

BIOL2000 Lecture Notes - Lecture 3: Nuclear Localization Sequence, Lipid Bilayer, Nuclear Pore

Document Summary

Get access

Related Documents

BIOL2000 Lecture Notes - Lecture 7: Nuclear Membrane, Nuclear Lamina, Nuclear Pore

BIOL2000 Study Guide - Midterm Guide: Golgi Apparatus, Nuclear Membrane, Nuclear Lamina

BIOL2000 Study Guide - Midterm Guide: Golgi Apparatus, Nuclear Membrane, Nuclear Lamina

Related Questions