Shared Flashcard Set

Details

Bio Test 2: Cells, Ch. 4
Biology
50
Biology
Undergraduate 1
10/15/2012

Additional Biology Flashcards

 


 

Cards

Term
What are cells?
Definition

Cells are units of life.

Organisms can be single cells, colonies, or multicellular.

Term
What are the two basic types of cells?
Definition
Prokaryote and Eukaryote
Term
What do Prokaryotes consist of?
Definition
Bactera and Archaea
Term
What do Eukaryotes consist of?
Definition

Protista, Fungi, Animalia, Plantae

(Peter Flies Air Planes)

Term
Which parts of the microscope enlarge images formed by the objective lens?
Definition
The Eyepiece and the Ocular Lens.
Term
Which parts of the microscope magnify specimen, forming primary images?
Definition
Objective Lens
Term
Which parts of the microscope focus light through specimen?
Definition
Condenser Lens
Term
Where is the Condenser Lens located?
Definition
Above the light source towards the bottom of the microscope.
Term
Where is the Ocular Lens located?
Definition
The Ocular lens is located at the top of the microscope by the Eyepiece.
Term
Where is the Objective Lens located?
Definition
The objective lens is located in the middle of the microscope, near the specimen.
Term

1 meter = ? millimeters

(1 m = ? mm)

Definition

 1 meter = 103 millimeters

(1 m = 103 mm)

Term

1 meter = ? micrometers

(1 m = ? μm)

Definition

1 meter = 106 micrometers

(1 m = 106 μm)

Term

1 meter = ? nanometers

(1 m = ? nm)

Definition

1 meter = 109 nanometers

(1 m = 109 nm)

Term
What is the average size (in microns) of Prokaryote cells?
Definition

mostly 1-10 microns

 

Prokaryotes can be as small as 0.2 microns or as large as 750 microns

 

*Prokaryotes are much smaller than Eukaryotes

Term
What is the average size (in microns) of Eukaryote cells?
Definition

mostly 10-100 microns

 

Eukaryotes can be meters long

Term
Surface area is proportional to __.
Definition
Surface area is proportional to L2.
Term
Volume is proportional to __.
Definition
Volume is proportional to L3.
Term
The ratio of surface area to volume ______ as size increases.
Definition
The ratio of surface area to volume decreases as size increases.
Term
The ratio of surface area to volume decreases as size ______.
Definition
The ratio of surface area to volume decreases as size increases.
Term

The ratio of surface area to volume _____ as size _____.

Definition
The ratio of surface area to volume decreases as size increases.
Term
What are three characteristics of Prokaryotes?
Definition

1.) No internal membranes

2.) 70s ribosomes

3.) circular DNA and plasmids

Term
What are four characteristics of Eukaryotes?
Definition

1.) extensive internal membrane systems

2.) membrane-bound nucleus

3.) 80s ribosomes

4.) linear DNA, histones, chromosomes

Term

Prokaryote or Eukaryote:

circular DNA and plasmids

Definition
Prokaryote
Term

Prokaryote or Eukaryote:

linear DNA, histones, chromosomes

Definition
Eukaryote
Term

Prokaryote or Eukaryote:

extensive internal membrane systems, including membrane-bound nucleus

Definition
Eukaryote
Term

Prokaryote or Eukaryote:

70s ribosomes

Definition
Prokaryote
Term

Prokaryote or Eukaryote:

no internal membranes

Definition
Prokaryote
Term

Prokaryote or Eukaryote:

80s ribosomes

Definition
Eukaryote
Term
What are two organells that phosphorylate ATP?
Definition
Mitochondria and Chloroplast
Term
What powers the mitochondria?
Definition
The mitochondria is powered by oxidation of food molecules.
Term
What powers the chloroplast?
Definition
The chloroplasts are powered by light.
Term
What are five characteristics of mitochondria and chloroplasts?
Definition

1.) similar size to prokaryote cells

2.) bounded by double membrane

3.) have their own circular DNA

4.) have their own ribosomes (70s)

5.) Reproduce by dividing

Term
Which cell structures are involved in cell manufacturing?
Definition

Nucleus, Ribosomes, Rough ER, Smooth ER, and Golgi apparatus

 

(Nick Rents REally SExy GAls)

haha.... :)

Term
Which cell structures are involved in breakdown?
Definition

Lysosomes, Vacuoles, and Peroxisomes

(Love Vulgar Pancakes)

????

I'm running out of great acronyms...

Term
Which cell structures are involved in energy processing?
Definition
Mitochondria and Chloroplasts
Term
Which cell structures are involved in support, movement, and communication between cells?
Definition
Cytoskeleton, Extracellular Matrix, Cell junctions, and Cell Walls
Term
What is the function of the nucleus?
Definition

- DNA synthesis

- RNA synthesis

- assembly of ribosomal subunits (in nucleoli)

Term
What is the function of ribosomes?
Definition
Polypeptide (protein) synthesis
Term
What is the function of the Rough ER?
Definition

- Synthesis of membrane lipids and proteins, secretory proteins, and hydrolytic enzymes

- Formation of transport vesicles

Term
What is the function of the Smooth ER?
Definition

- Lipid synthesis

- Detoxification in liver cells

- Calcium ion storage

Term
What is the function of the Golgi apparatus?
Definition

- Modification and transport of macromolecules

- Formation of lysosomes and transport vesicles

Term
What is the function of Lysosomes?
Definition

- Only found in animal cells and some protists

- Digestion of ingested food, bacteria, and a cell's damaged organells and macromolecules for recyling

Term
What is the function of vacuoles?
Definition

- Digestion (like lysosomes)

- Storage of chemicals

- cell enlargement

- water balance

Term
What is the function of peroxisomes?
Definition

- Peroxisomes are not part of the endomembrane system

- Diverse metabolic processes with breakdown of H2O2 by-product

Term
What is the function of mitochondria?
Definition
Conversaion of chemical energy of food to chemical energy of ATP
Term
What is the function of chloroplasts?
Definition

- only in plants and some protists

- conversion of light energy to chemical energy of sugars

Term
What is the function of the cytoskeleton?
Definition

- this includes cillia, flagella, and centrioles in animal cells

- maintenance of cell shape

- anchorage for organelles

- cell movement

- mechanical transmission of signals from exterior of cell to interior

Term
What is the function of the extracellular matrix?
Definition

- Only in animals

- binding of cells in tissures

- surface protection

- regulation of cellular activities

Term
What is the function of cell junctions?
Definition

- Communication between cells

- Binding of cells in tissues

Term
What is the function of cell walls?
Definition

- Only in plants, fungi, and some protists

- maintenance of cell shape and skeletal support

- surface protection

- binding of cells in tissues

Supporting users have an ad free experience!