Biology Chapter 4 And 5 Test

Front 1

All living things are composed of many cells.

Back 1

False

Front 2

A cell is the smallest unit that can carry on all the processes of life.

Back 2

True

Front 3

As a cell gets larger, its volume increases at a faster rate than its surface area

Back 3

True

Front 4

The long extension on nerve cells enable them to form a rigid scaffolding that gives brain tissue its structure

Back 4

False

Front 5

Membranes are selectively permeable if they allow only certain substances to diffuse across them.

Back 5

True

Front 6

Lysosomes carry on cellular respiration

Back 6

False

Front 7

Micotubules and microfilaments form the cytoskeleton of cells

Back 7

True

Front 8

The only difference between a plant cell and an animal cell is that plant cells have chloroplasts

Back 8

False

Front 9

Facilitated diffusion meves molecules and ions in one direction only, while active transport moves them in two directions

Back 9

False

Front 10

During the Process of exocytosis, the cell membrane extends to engulf substances that are too big to pass through the cell membrane.

Back 10

False

Front 11

Hooke's discovery of cells was made observing

Back 11

dead plant cells

Front 12

Surface area is an important factor in limiting cell growth because

Back 12

the cell maybecome too large to take in enough food and to remove enough waste.

Front 13

The size of which a cell can grow is limited by its

Back 13

surface area

Front 14

A cell that can change its shape would be well suited for

Back 14

moving to different tissues through narrow openings

Front 15

Which of the following is a characteristic of prokaryotes?
a.) they have a nucleus
b.) they were found on Earth before eukaryotes
c.) the organelles in their cytoplam are surrounded by membranes.
d.) none of the above

Back 15

They were found on earth before eukaryotes.

Front 16

Which of the following is an example of a prokaryotic cell? A.)amoeba B.) virus C.) bacterium D.) liver cell

Back 16

Bacterium

Front 17

Studying a picture of a cell taken with an electron microscope, you find that the cell has no nucleus and no mitochondria, but it does have a cell membrane and a cell wall. You conclude that the cell is probably from a

Back 17

prokaryote

Front 18

Cell membranes
A. are only found on a small number of cells
B. contain genes
C. are made of DNA
D. are thin covering that surround cells.

Back 18

are thin coverings that surround cells

Front 19

A protein that fits into the cell membrane
a. has two polar end sections that bond with water
b. floats in the cell membrane
c. has a nonpolar middle section.
d. all of the above

Back 19

all of the above

Front 20

the cell membrane
a. encloses the contents of a cell.
b. allows material to enter and leave the cell.
c. is selectively permeable
d. all of the above

Back 20

all of the above

Front 21

a particularly active cell might contain large number of

Back 21

mitochondria

Front 22

in which of the following organelles is a cell's ATP produced?
a. mitochondrion
b. endoplasmic reticulum
c. Golgi apparatus
d. lysosome

Back 22

mitochondrion

Front 23

Numerous threadlike organelles that protrude from the surface of a cell and are packages in tight rows are called

Back 23

cilia

Front 24

Proteins are made in cells on the

Back 24

Nucleus

Front 25

The double membrane surrounding the nucleus is called the

Back 25

nuclear envelope

Front 26

All cells have

Back 26

a membrane, internal fluid that gives shape to the cell and supports the other things within it.

Front 27

The cell uses the mitochondria to

Back 27

produce energy

Front 28

Animal cells do not have a

Back 28

cell wall

Front 29

the organelles in plant cells that contain a green pigment are the

Back 29

chloroplasts

Front 30

Which of the following is not a speacialized activity found in cells of Volox colonies

Back 30

transmission of messages

Front 31

As a result of diffusion, the concentration of many types of substances

Back 31

eventually becomes balanced on both sides of a membrane

Front 32

Diffusion takes place

Back 32

from an area of high concentration to an area of low concentration

Front 33

Channels utilizing facilitated diffusion

Back 33

work in two directions.

Front 34

Which of the following does not expend energy

Back 34

diffusion

Front 35

The process by which water passes into or out of a cell is called

Back 35

osmosis

Front 36

Molecules that are too large to be moved across the cell membrane can be removed from the cell by

Back 36

exocytosis

Front 37

Molecules that are to large to be moved through the membrane can be trasported into th cell by

Back 37

endocytosis

Front 38

The statement that "cells are produced only from existing cells" is part of the

Back 38

Cell Theory

Front 39

The ration of surface are to volume puts limitation on a cell's

Back 39

Size