Chapter 4

Question 1

The fluid mosaic model does includes:

Answer 1

lipids
proteins
membrane flexibility

Question 2

Selectively permeable membranes allow

Answer 2

only certain molecules to pass through

Question 3

Who is known for grinding his own lenses to view tiny organisms?

Answer 3

Leeuwenhoek

Question 4

The diffusion of water through a membrane is

Answer 4

osmosis

Question 5

Active transport requires a cell to use

Answer 5

its own energy

Question 6

a _______________ is not found in all cells

Answer 6

cell wall

Question 7

The compound light microscope is called compound because

Answer 7

it uses two sets of lenses

Question 8

A student views a specimen through a microscope using a 10x eyepiece and a 44x objective. The image of the specimen is enlarged by how much?

Answer 8

440 times

Question 9

Which plant organelle regularly appears green?

Answer 9

chloroplasts

Question 10

Which of the following does not belong with the other three?
nucleus
chromosomes
DNA
cilia

Answer 10

cilia

Question 11

The parts of a cell that carry on many of the functions necessary to keep the cell alive

Answer 11

cytoplasmic organelles

Question 12

the powerhouses of the cell

Answer 12

mitochondria

Question 13

a series of folded membranes found in the cytoplasm of cells that allows substances to move from one part of the cell to another

Answer 13

endoplasmic reticulum

Question 14

an organelle responsible for packaging substances that are then released from the cell

Answer 14

Golgi apparatus

Question 15

a structure in cells that stores various types of materials

Answer 15

vacuole

Question 16

an organelle that contains substances and structures needed to carry on photosynthesis

Answer 16

chloroplast

Question 17

long whiplike structures used in cellular movement

Answer 17

flagella

Question 18

an organelle that contains enzymes to digest substances that are no longer needed

Answer 18

lysosome

Question 19

the cellular structure that contains the chromosomes

Answer 19

nucleus

Question 20

structure made of DNA and other molecules

Answer 20

chromosomes

Question 21

True or False

Cell membranes have one basic design, but there are many variations of that design in different types of cells.

Answer 21

True

Question 22

True or False

Mitochondria have two layers of membranes, and the inner membrane is folded into ridges.

Answer 22

True

Question 23

True or False

Flagella are generally shorter and found in greater numbers on a cell than are cilia

Answer 23

False

Question 24

True or False

The inner membranes of chloroplasts contain chlorophyll

Answer 24

True

Question 25

True or False
A medical doctor who examines human tissues, blood, and other body fluids to diagnose diseases and disorders is a podiatrist.

Answer 25

False

Question 26

Be able to label the following structures of a cell:
vacuole
nucleus
mitochondrion
endoplasmic reticulum
cilia

Answer 26

study the animal cell on page 56

Question 27

Two types of passive transport are:

Answer 27

diffusion and osmosis

Question 28

The movement of molecules from a region of high concentration to a region of low concentration is called?

Answer 28

diffusion

Question 29

The thick fluid inside a cell membrane is the

Answer 29

cytoplasm

Question 30

____________ are tiny organelles that direct the assembling of proteins.

Answer 30

ribosomes

Question 31

Chlorophyll is to chloroplast as DNA is to __________

Answer 31

nucleus