The primary function of intermediate filaments is to
provide mechanical stability
generate movement
produce the structural core of microvilli
produce the axoneme of flagella
be involved in the movement of chromosomes
10
48
Из 106
Which of the following structures are involved in the catabolism of hydrogen peroxide (H202)
Peroxisomes
Smooth endoplasmic reticulum
Rough endoplasmic reticulum
Ribosomes
Lysosomes
10
49
Из 106
Which of the following statements BEST describes immotile cilia (Kartagener`s) syndrome?
Lack of dynein arms
Degeneration of actin microfilament
Lack of centrioles
Absence of microtubules
Lack of nexin proteins
10
50
Из 106
Which of the following structures is responsible for lack of movement of cilia?
Dynein arms lacking the enzyme ATPase
Lack of the nexin proteins
The microtubule of cilia lack the triplet formation
Lack of the myosin microfilaments
Lack of the actin microfilaments
10
51
Из 106
Which organelle in the liver is involved in the detoxification of drugs?
Smooth endoplasmic reticulum
Peroxisomes
Rough endoplasmic reticulum
Ribosomes
Lysosomes
10
52
Из 106
Which of the following proteins binds to membrane proteins and serves as a scaffold to support the nuclear envelope?
Lamins
Actin
Microtubules
Spectrin
Integrin
10
53
Из 106
Which of the following statements BEST describe basal folds?
They are involved in active transport
They process cilia
They function in exocytosis
They are involved in lipid transport
They make up part of Golgi complex
10
54
Из 106
Which one of the following cellular junctions prevents the free diffusion of materials across the cell layer?
Hemidesmosome
Gap junction
Adherence junction
Tight junction
Nexus
10
55
Из 106
At which of the following site is the characteristic triple helical structure of the collagen initially formed?
Golgi apparatus
Exracellular space
Nucleus
Rough endoplasmic reticulum
Smooth endoplasmic reticulum
10
56
Из 106
Which of the following statement concerning the smooth endoplasmic reticulum is CORRECT?
Is involved in the synthesis of phospholipids for membrane formation
Stains with basic dyes
Is not involved in glycogen metabolism
It is abundant in cells that are producing proteins for export
Initial glycosylation of proteins occur here
|
|
|
10
57
Из 106
Which of the following components of the cell enhances acidophilia?
Smooth endoplasmic reticulum
Plasma membrane
Rough endoplasmic reticulum
Golgi complex
Ribosomes
10
58
Из 106
Which of the following concerning the structure of plasma membrane is CORRECT?
Carbohydrates attached to some proteins and lipids form the glycocalyx on the external side of the plasmalemma
The glycocalyx is present on the cytosolic side of the plasma membrane
Carbohydrates are located within the lipid bilayer
All integral proteins lack carbohydrate on external side of plasma membrane
Intermediate filaments attach to the carbohydrate portion of the glycoproteins
10
59
Из 106
Which one of the following statements concerning the nuclear structure is INCORRECT?
The nucleolus is composed of three parts: a granular component, a fibrous component, and the nuclear envelope.
The fibrous lamina is composed of intermediate filament proteins
Each nucleus of every human cell contains the same DNA
The double membranes of the nuclear envelope are continuous with the rough endoplasmic reticulum
10
60
Из 106
Which one of the following statements concerning the nuclear envelope is INCORRECT?
It is the site of synthesis of proteins that form elements of the nuclear matrix
It is continuous with the membranes of the rough endoplasmic reticulum
It serves as the boundary between the cytoplasmic and nuclear compartments
It is stabilized on its inner aspect by filaments of the nuclear lamina
It contains pores that regulate passage of materials in both directions between nucleus and cytoplasm
10
61
Из 106
Microvilli are structures that
are made of actin microfilaments
are composed of intermediate filaments
allow flagella of spermatozoa to move
have basal
bodies at their bases
10
62
Из 106
Дата добавления: 2023-01-08; просмотров: 23; Мы поможем в написании вашей работы! |
Мы поможем в написании ваших работ!