The Cell (PPT based) Part II

Question 1

7.5 nm thick and composed of a lipid bilayer and associated proteins

Answer 1

PLASMA MEMBRANE

Question 2

envelopes the cell

Answer 2

PLASMA MEMBRANE

Question 3

aids in maintaining its structural and functional integrity

Answer 3

PLASMA MEMBRANE

Question 4

functions as a semi-permeable membrane between the cytoplasm and the external environment

Answer 4

PLASMA MEMBRANE

Question 5

sensory device

Answer 5

PLASMA MEMBRANE

Question 6

recognize other cells and macromolecules

Answer 6

PLASMA MEMBRANE

Question 7

composed of an inner leaflet (facing the cytoplasm) and an outer leaflet (facing the extracellular environment)

Answer 7

PLASMA MEMBRANE

Question 8

exhibits a trilaminar structure (called the unit membrane)

Answer 8

PLASMA MEMBRANE

Question 9

performs special processes like: phagocytosis, pinocytosis, exocytosis

Answer 9

PLASMA MEMBRANE

Question 10

composed of phospholipids, glycolipids and cholesterol

Answer 10

Lipid bilayer

Question 11

12 nm wide and 25 nm long

Answer 11

RIBOSOMES/ Palade granules

Question 12

consist of a small and large subunit composed of several types of RNA

Answer 12

RIBOSOMES/ Palade granules

Question 13

may be:
free in the cytosol

Answer 13

RIBOSOMES/ Palade granules

Question 14

may be:
bound to membranes of the
*rough endoplasmic reticulum
*outer nuclear membrane

Answer 14

RIBOSOMES/ Palade granules

Question 15

may be:
actual sites of protein synthesis

Answer 15

RIBOSOMES/ Palade granules

Question 16

may be:
responsible for the basophilic staining of the cytoplasm

Answer 16

RIBOSOMES/ Palade granules

Question 17

site where non-cytosolic proteins are synthesized

Answer 17

ROUGH ENDOPLASMIC RETICULUM (RER)

Question 18

ROUGH ENDOPLASMIC RETICULUM (RER):
site where non-cytosolic proteins are synthesized are:

Answer 18

Secretory
Plasma membrane
Lysosomal

Question 19

provide an area of storage and transport of proteins

Answer 19

ROUGH ENDOPLASMIC RETICULUM (RER)

Question 20

irregular network of membrane bounded channels that lack ribosomes on its surface appearing smooth

Answer 20

SMOOTH ENDOPLASMIC RETICULUM/Agranular endoplasmic reticulum

Question 21

appears as branching anastomosing tubules or vesicles membranes

Answer 21

SMOOTH ENDOPLASMIC RETICULUM/Agranular endoplasmic reticulum

Question 22

less common than RER

Answer 22

SMOOTH ENDOPLASMIC RETICULUM/Agranular endoplasmic reticulum

Question 23

predominates in cells synthesizing steroids, triglycerides and cholesterol

Answer 23

SMOOTH ENDOPLASMIC RETICULUM/Agranular endoplasmic reticulum

Question 24

SMOOTH ENDOPLASMIC RETICULUM serves different functions in different cell types:

Answer 24

steroid hormones and lipid synthesis
drug detoxification (liver)
muscle contraction and relaxation

Question 25

parallel stacks of membranes (6-10) located near the nucleus

Answer 25

ANNULATE LAMELLAE

Question 26

resemble the nuclear envelope, including its pore complexes

Answer 26

ANNULATE LAMELLAE

Question 27

are continuous with the RER

Answer 27

ANNULATE LAMELLAE

Question 28

are found in rapidly growing cells (germ cells, embroyonic cells, tumor cells)

Answer 28

ANNULATE LAMELLAE

Question 29

are found in rapidly growing cells (germ cells, embroyonic cells, tumor cells)

Answer 29

ANNULATE LAMELLAE

Question 30

rod-shaped organelles [0.2 µm (W) – 7 µm (L)] double layered sac

Answer 30

MITOCHONDRIA

Question 31

possess an outer smooth membrane and an inner membrane, which invaginates to form cristae

Answer 31

MITOCHONDRIA

Question 32

important in energy metabolism

Answer 32

MITOCHONDRIA

Question 33

as major source of adenosine triphosphate (ATP)

Answer 33

MITOCHONDRIA

Question 34

site of many metabolic reaction

Answer 34

MITOCHONDRIA

Question 35

subdivided into an intermembrane compartment and an inner matrix compartment

Answer 35

MITOCHONDRIA

Question 36

contain granules within the matrix that bind the divalent cations Mg+2 and Ca+2

Answer 36

MITOCHONDRIA

Question 37

contain all of the enzymes of the krebs (TCA) cycle

Answer 37

MITOCHONDRIA

Question 38

consists of disk-shaped cisternae (saccules) arranged in a stack

Answer 38

GOLGI COMPLEX (apparatus)

Question 39

pale area near the nucleus

Answer 39

GOLGI COMPLEX (apparatus)

Question 40

processing of non-cytosolic proteins synthesized in the RER

Answer 40

GOLGI COMPLEX (apparatus)

Question 41

membrane retrieval, recycling and redistribution(renewal of cell membrane)

Answer 41

GOLGI COMPLEX (apparatus)

Question 42

characterized by a visible cytoplasmic surface coat

Answer 42

COATED VESICLES

Question 43

2 varieties of Coated Vesicles:

Answer 43

clathrin-coated vesicles clathrin

Question 44

3 large and 3 small polypeptide chains that form a triskelion (3 legged structure)

Answer 44

formed during endocytosis associated with signal-directed transport non-clathrin-coated vesicles involved in the transport of proteins from RER to golgi, one golgi cisterna to another golgi complex to plasma membrane associated with constitutive protein transport

Question 45

dark staining body containing hydrolytic enzymes

Answer 45

LYSOSOMES

Question 46

essential for intracellular digestion

Answer 46

LYSOSOMES

Question 47

Types of lysosomes:

Answer 47

Multivesicular bodies/endosomes Phagolysosomes/phagosomes + lysosomes Auto-phagolysosomes Residual bodies

Question 48

also known as microbodies

Answer 48

PEROXISOMES

Question 49

membrane-bound, ovoid

Answer 49

PEROXISOMES

Question 50

has oxidative enzyme for the breakdown of hydrogen peroxide and alcohol

Answer 50

PEROXISOMES