ZOOL 115 Lecture Notes - Lecture 4: Nucleolus, Osmosis, Phagocytosis

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18 Oct 2016

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All living things are made of cells. The cell is the basic unit of structure and function in living things. It consists of: a nucleus: contains the genetic information, a cytoplasm fluid portion surround the nucleus, a cell membrane (or plasma membrane, a cell wall (plants only) Prokaryotic cell (noneukarytoic cells: are structurally simple, have very few organelles lack a nucleus; dna is not membrane bound include the domain eubacteria and archaea. Eukaryotic cells: structurally much more complex and larger, have a true nucleus and many membranous organelles, include cells of plants, fungi, animals, protozoa, and algae, include domain eucarya. Most cells are small so they can exchange materials with their environments. Prokaryotic cells=> smaller sizes; 1-2 micrometer in diameter. Exceptions to small size: 1) chicken egg, 2) some plant cells. In both examples, only a small portion of the cell is metabolically active. Cholesterol in the hydrophobic region of the membrane.

Related Questions

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

PLEASE HELP! HELP! I HAVE 3 PAPERS THAT IâM WRITING SO INEED HELP WITH THIS ASSIGNMENT!

PLEASE READ THE QUESTIONS CAREFULLY BEFORE ANSWERING.PLEASE INCLUDE A PARENTHETICAL CITATION WHEN YOU REFER TO,SUMMARIZE, OR QUOTE FROM ANOTHER SOURCES. (MICROBIOLOGY) DUE DATE01/27/2019

Type a three-page minimum double spaced paper coveringthe following topics:

Compare and contrast gram-positive and gram-negative cellwalls. Discuss clinical implications of these differences(15 points).
Compare and contrast prokaryotic and eukaryotic cells. Touch onspecifically the differences in their nucleus, membrane-enclosedorganelles, cell wall, plasma membranes, chromosomes, ribosomes,and cell division. Discuss clinical implications of thesedifferences (15 points).
Describe the functions of the following organelles: flagella,cilia, cell wall, plasma membrane, cytoplasm, ribosome, nucleus,smooth endoplasmic reticulum, rough endoplasmic reticulum, golgicomplex, lysosomes, vacuoles, mitochondria, chloroplasts,peroxisomes (25 points).

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ZOOL 115 Lecture Notes - Lecture 4: Nucleolus, Osmosis, Phagocytosis

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