BSC 2010C Chapter Notes - Chapter 6: Nuclear Lamina, Nuclear Membrane, Cell Membrane

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taupemoose940

1 Oct 2016

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Similarities: bounded by plasma membrane contain cytosol (cytoplasm) inside cell contain chromosome; carry genes ribosomes; make proteins. Dna is in double membrane nucleus generally much larger cells contain many other organelles. Dna in non membrane enclosed nucleoid general smaller cells. Plasma membrane: formed by phospholipid bilayer hydrophilic heads hydrophobic tails. Plant vs animal cell animal cell surrounded by plasma membrane only. Plant cell surrounded by plasma membrane and cell wall contain vacuoles and chloroplast also. Ribosomes made up of ribosomal rna and protein that carry out protein synthesis not considered organelles because they are not membrane bound hight rates of protein synthesis = large numbers of ribosomes. Two types of ribosomes (same function to make protein) Bound: attached to the outside of the er. Endomembrane system composed of nuclear envelope , er, golgi apparatus, lysosomes. Variety of tasks synthesis of proteins transport of proteins: metabolism and movement detoxi cation.

Related Questions

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

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»¿

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

BSC 2010C Chapter Notes - Chapter 6: Nuclear Lamina, Nuclear Membrane, Cell Membrane

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