Human Physiology Chapter 3

Front 1

Which of the following is true of the nuclear envelope?

Back 1

the outer portion of the membrane is continuous with the endoplasmic reticulum

Front 2

The cellular organelle responsible for packaging secretions into vesicles is called:

Back 2

golgi complex

Front 3

Cell products that are to be secreted are processed and packaged into vesicles by the:

Back 3

golgi complex

Front 4

The plasma membrane is composed of a _____layer of phospholipids

Back 4

double

Front 5

the ___ends of the phospholipids face the core of the membrane

Back 5

polar

Front 6

the_____ends of the phospholipids face the interior of the cell (towards the cytoplasm)

Back 6

nonpolar

Front 7

The inner part of the membrane is

Back 7

hydrophobic

Front 8

The polar regions of the phospholipids are

Back 8

hydrophilic

Front 9

The proteins and phospholipids ____move laterally through the membrane

Back 9

can

Front 10

Phagocytosis Transport characteristics

Back 10

bulk transport, amoeboid movement, pseudopods, performed by neurtophils and macrophages

Front 11

Endocytosis Transport characteristics

Back 11

bulk transport
pinocytosis
receptor mediated
cholesterol enters a cell

Front 12

Exocytosis Transport Characteristics

Back 12

Involved in neurotransmitter release
increases the surface area of the cell membrane
releases proteins produced in golgi complex

Front 13

Phagocytes are attracted by which of the following?

Back 13

chemical products of microorganisms

Front 14

In phagocytosis the digested contents are eliminated by

Back 14

exocytosis

Front 15

A lysosome

Back 15

contains lysozyme and proteases which digest bacteria.

Front 16

Complement factor C3b coats a bacterium and binds to C3b receptors on phagocytes, making the bacterium more susceptible to being phagocytized.
true or false

Back 16

true

Front 17

A phagosome containing the engulfed bacteria combines with a lysosome containing enzymes to produce a phagolysosome.

true or false

Back 17

true

Front 18

Toxins, such as cholera toxin, process through the Golgi complex and endoplasmic reticulum through a process called:

Back 18

Retrograde Transport

Front 19

Which of the following is a function of the smooth endoplasmic reticulum?

Back 19

Both steroid hormone production and calcium ion storage.

Front 20

How does phagocytosis differ from endocytosis?

Back 20

phagocytosis uses pseudopods to surround and engulf material.

Front 21

The plasma membrane contains both carbohydrates and proteins.
true or false

Back 21

true

Front 22

The process by which cellular products are secreted into the external environment is ________.

Back 22

exocytosis

Front 23

A secondary lysosome:

Back 23

contains partially digested remnants from other organelles and ingested organic material

Front 24

Which characteristic describes the plasma membrane of a cell?

Back 24

The cellular proteins can serve as antigens

Front 25

Which of the following would most easily pass through the plasma membrane of a cell?

Back 25

steroid hormones

Front 26

what produces energy for the cell

Back 26

mitochondria

Front 27

proteins are produced in what?

Back 27

the ribosomes

Front 28

the lattice-work of mircofilaments and microtubules comprise the

Back 28

cytoskeleton

Front 29

is the cytoskeleton flexible or rigid?

Back 29

flexible

Front 30

Chromatin is threadlike material which:

Back 30

makes up chromosomes

Front 31

cell such as macrophages form___ to pull through the extracellular matrix

Back 31

pseudopods

Front 32

the process of ______involves engulfing organic matter

Back 32

phagocytosis

Front 33

after phagocytic cells engulf matter, the ingested particle fuses with a ____ to be broken down by enzymes

Back 33

lysosome

Front 34

immune cells such as neutrophils attack ____ to protect the body

Back 34

bacteria