Chapter 4 Organization Of The Cell

Front 1

These scientists concluded that all plant and animals consist of cells?

Back 1

Matthias Schleiden

Theodore Schwann

Front 2

It is advantageous for cells to be small because:

Back 2

it allows them to maintain an appropriate internal environment necessary for their biochemical system to function

Front 3

The scientist who gave cells their name base on his observations of cork cells was _________

Back 3

Robert Hooke

Front 4

The scientist who was first to observe organisms, blood, sperm, and protists was ___________

Back 4

Antonie van Leeuwenhoek

Front 5

The surface area of plasma membrantes can be increase for absorption of material by fingerlike extensions known as:

Back 5

Microvilli

Front 6

What is the resolving power of an electron microscope?

Back 6

Just less than 1nm

Front 7

Explain the difference between a transmission and a scanning electron microscope.

Back 7

The SEM provides infrmation about the shape and external features of the speciman that cannot be obtaine with the TEM

Front 8

The two features of a microscope which determine how clearly a small object can be viewed

Back 8

Magnification

Resolving power

Front 9

The ration of the size of the image to the size of the specimen is:

Back 9

Magnification

Front 10

The minimum distance between two points at which they can be distinguished as separate adn distinct, as opposed to a single blurred point describes:

Back 10

Resolving power or resolution

Front 11

The magnification ability of a light microspe is about_____________.

Back 11

1500-2000

Front 12

This type of microscopy directs light reatys from teh side an only allows scattered ligth to enter the lenses?

Back 12

Dark-field microscopy

Front 13

How many wavelengths do fluorescent stains absorb?

Back 13

1

Front 14

All organisms can be classified into two basic groups, based on their cells, they are:

Back 14

Prokaryotic cells

Eukaryotic cells

Front 15

An organism whose cells lack membranous bound organelles is clasified as:

Back 15

Prokaryotic cells

Front 16

Does a eukaryotic cell have plasma membrane?

Back 16

Yes

Front 17

List there characteristics of cell membranes:

Back 17

*Membranes divide the eukaryotic cell into compartments, allowing it to conduct specialized activities within small area of the cytoplasm, concentrate reactants, and organize metobolic reactions

*energy storage an conversion

*serve as work surfaces for certain chemical reactions

Front 18

Teh waery, jelly-like fluid material outside thenucleus of a cell is call

Back 18

cytoplasm (protoplasm)

Front 19

The nucleus is separated from the surrounding organelles within the cell by:

Back 19

Nuclear envelope

Front 20

The endoplasmic reticulum produces what?

Back 20

*Lipid synthesis

*Calcium ion storage

*Detoxifying enzymes

*Polypeptides

*Proteins

Front 21

What organelle possesses enzymes that digest some proteins, carbohydrates, fats, and nucleic acids and destroys bacteria and otehr foreign material that enters a cell?

Back 21

Lysosomes

Front 22

Cellular respration occurs within which organelle:

Back 22

Mitochondria

Front 23

What organelles are associated with photosynthesis?

Back 23

Chloroplasts

Front 24

Microtubles and microfilaments are all associate with the _____

Back 24

Cytoskeleton

Front 25

Cellulose is the primary component of which part of a cell:

Back 25

Cell walls

Front 26

Leucoplasts are pastids which are unpigmented (true or fals)

Back 26

true; leucoplasts are plastids which are unpigmented

Front 27

Many plant cells have a large central___________

Back 27

Vacuole

Front 28

If a toxin, such as a bacterial toxin, destroys ribosomes, what cellular activity will be affected first? (what do ribosomes do?)

Back 28

*the peptides bonds would be affected first

*They contain the enzyme activities necessary to form peptide bonds, which join amino acids to produce proteins.

Front 29

Proteins made on ribosomes may be further modified within what organelle:

Back 29

Endoplasmic reticulum

Front 30

The smooth endoplasmic reticulum produces what products:

Back 30

Lipid synthesis

Calcium ion storage

detoxifying enzymes

Front 31

Which one is larger, chloroplast or mitochondria?

Back 31

Chloroplasts tend to be somewhat larger than mitochondria

Front 32

The mitochondria is the powerhouse of the cell. True or false

Back 32

true; mitochondria is knowns as the powerhouse of the cell

Front 33

Which organelle plays an important rolein destroying worn out material of the cell?

Back 33

Lysosomes

Front 34

The mitochondrial ______Greatly increase the surface area of teh inner mitochondiral membrane.

Back 34

Cristae

Front 35

In photosynthesis, energy is produced in the:

Back 35

chloroplasts

Front 36

A cellular structure found in plant but NOT animal cells is the:

Back 36

vacuoles

Front 37

A singel cell in a smokers lunds has become cancerous. It doubles its DNA and divides much faster than a normal lung cell. The organelle that would be defected is:

Back 37

mitochondria (apoptosis)