101 Study Guide - Midterm Guide: Phosphatidylcholine, Phosphatidylserine, Phosphatidylethanolamine

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adityaag1507

17 Aug 2022

School

Rajasthan University of Health Sciences - RUHS

Department

Biology

Course

101

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Document Summary

Cell discovered by robert hook oaktree, book-micrographia. 1st cell theory given by schleiden(botanist) 1838 and schwann(zoologist, told that plants have cell wall)- 1839. Revised cell theory- virchow law of cell lineage -1855. Cell membrane coined by nageli and kramer. Sandwitch or trilamellar model- davson and danielli 1935 thickness 75a(20+35+20- Pllp) , lipid is ampipathic molecule, hydrophilic head -join- protein - hydrogen and ionic bond, hydrophobic tail - attached - vanderwaal force. Unit membrane model/ robertson model- by robertson -1959- all cellular-organellar membranes -structurally-functionally-similar. Fluid mosaic model/quasi fluid model-singer and nicolson- 1972 -protein iceberg in sea of phospholipid- 1)phosopholipid- main- phosphatidyl choline(lecithin), phosphatidyl serine , p-ethanol amine(cephalin)- mainly phosphoglycerides, show flip flop movement, protein can move inside membrane-fluidity, cholesterol- rigidity, prokaryotes- cholesterol absent- have hopanoids(pentacyclic sterol). P. m. is asymmetrical- presence of spectrin on inner side and glycolipid glycoprotein( made of oligosaccharide)on outer surface. -algal cell wall made of- cellulose, galactans, mannans, minerals- caco3.

Related Questions

Indicate whether each statement is true or False.

1. The cytoplasm contains all of the material inside of the plasma membrane.

2. The cytosol is the fluid portion of the cytoplasm, which contains the cytoskeleton and cytoplasmic inclusions.

3. The cytoskeleton supports the cell and holds the nucleus and other organelles in place.

4. The cytoskeleton consists of 3 groups of Carbohydrates: microtubules, actin filaments, and intermediate filaments.

5. Cytoplasmic inclusions of the cytoplasm can be aggregates of chemicals either produced or taken in by the cell.

Place the following in order from most complex to least complex

A- Cell B- Hydrogen C- Water D- Protons

31. C

32. B

33. A

34. D

Match the cell type with the most appropriate description or phrase

A- Prokaryotic B- Eukaryotic C- Both

36. Is the cell type that builds multicellular organism in Fungal, Plant, and Animal Kingdom.

B- Eukaryotic

37. Bacteria is an example of this cell type.

A- Prokaryotic

38. Contain Cytoplasmâs and cell membranes

B- Eukaryotic

39. Contain Membrane- bound organelles

C- Both

True or False

40. All cells contain a cell membrane, cytoplasm, and a nucleus.

False

41. According to the Cell Theory, all living things are composed of cells.

True

42. According to the Cell Theory, all living things use DNA as the genetic information molecule.

True

1,Match the descriptions to the type of transport.

- A. B. C.	Water enters a cell because it is hypertonic compared to the extracellular environment, increasing its turgor pressure
- A. B. C.	Water enters guard cells because the guard cells are hypertonic compared to the surrounding cells
- A. B. C.	Potassium ions are pumped into guard cells
- A. B. C.	The motor cells of a Venus fly trap are hypotonic compared to surrounding cells, causing water to leave the motor cells
- A. B. C.	Sugar is loaded into the phloem

A.	Both active and passive transport
B.	Passive Transport
C.	Active transport

2,Describe what is wrong with the following statement and explain why:

All prokaryotic and eukaryotic cells contain plasma membrane, nucleus, ribosomes, organelles, cytoplasm, and cell walls.

What is short-distance transport?

	a,	The movement of solutes from a region of low concentration to a region of high concentration
		b,The movement of water, nutrients, and other substances between cells
c,		The movement of substances from a region of high concentration to a region of low concentration
d,		The movement of water across a semipermeable membrane from a region of low solute concentration to a region of high solute concentration.

What terms describe the movement of water across a semipermeable membrane from a region of high water concentration towards a region of low water concentration (and high solute concentration.)

What is found in the proptoplasm?

Cell wall, cytoplasm, plasma membrane, nucleus, and other cell organelles

Plasmodesmata, cell wall, and plasma membrane

Cell wall, cytoplasm, and plasma membrane

Cytoplasm, nucleus, and other cell organelles

The channels that allow nutrients and protoplasm to pass between plant cells are called _________________.

What happens when a plant cell is placed in a hypotonic solution?

Water will enter the plant cell and the plasma membrane will swell and cell lysis will occur

Water will leave the plant cell and the plasma membrane will pull away from the cell and plasmolysis will occur

Water will enter the plant cell and the plasma membrane will swell and push against the cell wall

Water will leave the plant cell and the plant cell will lose turgor pressure, causing the plant to wilt

________________ transport uses cellular energy.

What molecules make plasma cell membranes hydrophilic on the outside and hydrophobic on the inside?

What type of cells do plants have?

		Bacterial
		Archaeic
		Eukaryotic
		Prokaryotic

101 Study Guide - Midterm Guide: Phosphatidylcholine, Phosphatidylserine, Phosphatidylethanolamine

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