Boliogy 1107 Chapter 4

Front 1

The smallest living unit is a _____.

Back 1

Cell

Front 2

All cells come from preexisting cells.

Back 2

true

Front 3

All living organisms are multicellular.

Back 3

false

Front 4

A large cell has more surface area to volume than a small cell.

Back 4

false

Front 5

The surface area of a cell _____.

Back 5

must be large enough to allow adequate nutrients to enter
B) may be increased by modifications of the plasma membrane
C) must be of adequate size to allow for waste disposal
D) all of the above

Front 6

The smallest cells are _____.

Back 6

bacterial

Front 7

The magnification capability of a transmission electron microscope is much greater than that of a light microscope.

Back 7

True

Front 8

Bacterial cells are easily seen without a microscope.

Back 8

False

Front 9

Which of the following is NOT a feature of bacterial cells?

Back 9

Ribosomes

Front 10

Photosynthetic bacteria (cyanobacteria) contain ______.

Back 10

Thylakoids

Front 11

Bacteria are prokaryotic cells, which means that they lack a nucleus.

Back 11

True

Front 12

Bacterial cells do not contain DNA.

Back 12

False

Front 13

Protein synthesis in a bacterial cell is done by _____.

Back 13

Ribosomes

Front 14

Motile bacteria move by means of ______.

Back 14

Flagella

Front 15

The DNA of a bacteria is located in the _____.

Back 15

Nucleoid

Front 16

Bacterial cells may have accessory rings of DNA called plasmids.

Back 16

True

Front 17

The regulation of molecule movement in and out of the cell is done by the _____.

Back 17

Plasma membrane

Front 18

In photosynthetic bacteria (cyanobacteria) the light-sensitive pigments are found in chloroplasts

Back 18

False

Front 19

The outermost boundary of prokaryotic cells is their _____.

Back 19

Cell Wall

Front 20

The simple structure of bacteria limits where they can live and what material they can use for energy.

Back 20

False