BIO130H1 Lecture Notes - Lecture 7: Inner Membrane, Phosphatidylserine, Fluorescence Microscope

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BIO130H1 Full Course Notes

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Part 1 involved dna, rna, and protein; replication, transcription, translation. Part 2 involves where these processes take place in the cell, regulation of cytosol, membrane structure and transport, cytoskeleton (filaments, adhesion proteins, By the end of bio130, you should be able to: Identify the different parts of a eukaryotic cell. 1: match the processes that take place inside the cell with the parts of the cell. 3: recognize the techniques used in different types of experiments discussed in lectures. Place these processes in context of how the whole cell functions. Single-celled eukaryotes often have a cell wall tough, protective outer coat. Multicellular organisms are composed of many different cell types. Human body composed of about 200 different cell types (epithelial, skin, muscle, etc. ) Some have variety of different functions, and some have similar functions. Lysosome functions in degradation of cell parts that are no longer needed. Extracellular matrix specialized material outside of the cell.

Related Questions

1. How does the extracellular matrix affect a cell that it surrounds? (Select all that apply.)

	The cell's shape depends in part on the structure and composition of the extracellular matrix.
	The genes that the cell expresses depend in part on the types of proteins in the extracellular matrix.
	The size that the cell grows to depends in part on the polysaccharides in the extracellular matrix.
	The extracellular matrix has no effect on the cells that it surrounds.
	All of these choices are correct.

2. Which of the following enable(s) the movement of cells?

	microtubules
	microfilaments
	intermediate filaments
	microtubules and microfilaments
	microfilaments and intermediate filaments

3. Microtubules increase in length:

	more quickly at one end than the other.
	by growing outward from the centrosome.
	in cycles, following rapid depolymerization.
	if free tubulin dimers are available.
	All of these choices are correct.

4. Dynamic instability is the rapid assembly and disassembly of:

	microfilaments.
	intermediate filaments.
	microtubules.
	both microfilaments and microtubules.

5. Which one of the following is a characteristic shared by integrins and cadherins?

	Both are peripheral membrane proteins.
	Both facilitate the adhesion of cells to extracellular matrix proteins.
	Both are present in adherens junctions, desmosomes, and hemidesmosomes.
	The cytoplasmic domains of both proteins are connected to the cytoskeleton.

6. Cadherin is an example of a(n):

	motor protein.
	intermediate filament protein.
	cell adhesion molecule.
	extracellular matrix protein.

7. Which is the CORRECT order from lesser to greater complexity for the following?

	organs, tissues, cells
	cells, tissues, organs
	tissues, organs, cells
	cells, organs, tissues

pucebear535

1. what is a genetic code?

2. briefly describe the process of DNA replication?

3 briefly describe what happens during transcription?

4. briefly describe the process of translation?

5. describe the difference between RNA and DNA?

6. where does replication take place?

7. where does transcription take place?

8. where does translation take place?

9. every gene begins with what type of signal?

10. what is differentiation? what is its result?

11. what is the difference between a neoplastic cell and acancerous cell?

12. describe how oncogenes affect the development of neoplasticcells?

pinkreindeer179

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

BIO130H1 Lecture Notes - Lecture 7: Inner Membrane, Phosphatidylserine, Fluorescence Microscope

BIO130H1 Full Course Notes

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