Chapter 4 & 5: Cells and membrane

Question 1

Which of the following factors would tend to increase membrane fluidity?

Accepted Answer

a greater proportion of unsaturated phospholipids

Question 2

carrier proteins bind to specific substances for invagination

Accepted Answer

endocytosis

Question 3

Which of the following organelles translates the DNA code into proteins?

Accepted Answer

ribosome

Question 4

letter I represents

Accepted Answer

cholesterol

Question 5

works against the concentration gradient (LOW TO HIGH)

Accepted Answer

active transport

Question 6

Which structure is NOT part of the endomembrane system?

Accepted Answer

chloroplast

Question 7

found in all prokaryotes and eukaryotes?

Accepted Answer

ribosomes

Question 8

Which cell would be best for studying lysosomes?

Accepted Answer

phagocyte white blood cell

Question 9

All of the following are important characteristics of water in biology EXCEPT which?

Accepted Answer

it is a nonpolar chemical

Question 10

In what way do the membranes of a eukaryotic cell vary?

Accepted Answer

certain proteins are unique to each kind of membrane

Question 11

Which of the following is a typical component of the plasma membrane of a eukaryotic cell?

Accepted Answer

Cholesterol

Question 12

In an isotonic solution the concentration of water is higher outside of the cell

Accepted Answer

false

Question 13

which of the following does not require energy?

Accepted Answer

facilitated diffusion

Question 14

What is the pathway taken by the newly synthesized protein that will be secreted by the cell?

Accepted Answer

ER->golgi->vesicles that fuse w/plasma membrane

Question 15

In a hypertonic solution

Accepted Answer

there is a higher concentration of water inside the cell

Question 16

Only found in all eukaryotes?

Accepted Answer

nucleus

Question 17

Crenation occurs when a cell is placed in a hypotonic solution

Accepted Answer

false

Question 18

prokaryotic and eukaryotic cells share which of the following features?

Accepted Answer

a plasma membrane

Question 19

The head of a phospholipid is a non-polar region

Accepted Answer

false

Question 20

Starch and glycogen molecules are similar in that both are

Accepted Answer

polymers of glucose

Question 21

Organic compounds, unlike inorganic compounds, contain

Accepted Answer

carbon

Question 22

In a hypotonic solution

Accepted Answer

there is a higher concentration of water outside the cell

Question 23

Which of cells would most likely have the greatest concentration of densely packed mitochondria

Accepted Answer

a smooth muscle cell in the diaphragm

Question 24

A mature plant cell can be distinguished from other eukaryotic cells because it has

Accepted Answer

a large central vacuole

Question 25

found in plants and not in animal cells?

Accepted Answer

ribosomes, cell wall

Question 26

letter C represents

Accepted Answer

a sugar molecule

Question 27

letter D represents

Accepted Answer

the polar head

Question 28

plasmids (circular genetic elements present in bacteria) can

Accepted Answer

act as transposons

Question 29

The tails of a phospholipid are lipophilic

Accepted Answer

true

Question 30

Which of the following helps in the fluidity of the cell?

Accepted Answer

cholesterol

Question 31

Which structure is common to plant and animal cells?

Accepted Answer

mitochondrion

Question 32

Which of the following is present in a prokaryotic cell?

Accepted Answer

ribosome

Question 33

which of the following has a cell wall?

Accepted Answer

plant cell and some bacteria

Question 34

water moves from low concentrations to high concentrations

Accepted Answer

false

Question 35

Which of the following processes includes all others?

Accepted Answer

passive transport

Question 36

Which structure-function part is mismatched?

Accepted Answer

microtubule: muscle contraction

Question 37

If a cell is exposed to cyanide, most of the cyanide will be found within the...

Accepted Answer

mitochondria

Question 38

the bonding of two amino acid molecules to form a portion of a protein chain involves

Accepted Answer

the release of a water molecule

Chapter 4 & 5: Cells and membrane

Questions 38

Chapter 4 & 5: Cells and membrane

Questions 38