Cell

Question 1

Kartagener syndrome is a hereditary syndrome; it is characterized by recurrent upper and lower respiratory tract infections. Dysfunction of which organelle is responsible for this syndrome?

Answer 1

Cilium

Kartagener s. - immotile cilia syndrome

Question 2

Organelle which is only present in spermatozoa

Answer 2

Flagella

Question 3

The inactive X chromosome in a female cell is called the ______ which is an example of ______.

Answer 3

Barr body, heterochromatin

Question 4

Barr body is also found in the cells of males with?

Answer 4

Klienfelter syndrome (XXY)

Question 5

Highly condensed and transcriptionally inactive form of DNA.

Answer 5

Heterochromatin

Question 6

Euchromatin is?

Answer 6

Extended and transcriptionally active form of DNA

Question 7

Function of golgi app.

Answer 7

Modification of lipids and proteins
Storage and packaging of materials that will be exported from the cell

Question 8

In which cellular component are glycoproteins assembled for extracellular use?

Answer 8

Golgi app

Question 9

Located between the nucleus and secretory surface of a cell. They package, store and modify products that are secreted from the cell.

Answer 9

Cisternae

Question 10

Cytoplasmic membrane-bound vesicles that contain a wide variety of glycoprotein hydrolytic enzymes that serve to digest and destroy exogenous material, such as bacteria.

Answer 10

Lysosomes

Question 11

Which of the following is the distinctive array of microtubules in the core of cilia and flagella composed of a central pair surrounded by a sheath of 9 doublet microtubules (9+2 pattern)?

Answer 11

Axoneme

Question 12

Cell organelle that constitute the centrosome and thus aid in formation of the mitotic spindle.

Answer 12

Centrioles

Question 13

Houses axoneme and is important in regulating the motion of the axoneme

Answer 13

Radial spoke

Question 14

A cell’s digestive system

Answer 14

Lysosomes

Question 15

Double-membraned organelles

Answer 15

Mitochondria
Nucleus

Question 16

Nonmembranous organelles

Answer 16

Ribosomes
Cytoskeleton
Nucleolus

Question 17

Site for protein synthesis “protein factories”

Answer 17

Ribosomes

Question 18

Plays an important role in the formation of ribosomes

Answer 18

Nucleolus ( also a site for protein synthesis)

Question 19

Mediators of inflammation

Answer 19

Mast cells

Question 20

Form myelin sheath around axons of the PNS

Answer 20

Schwann cells

Question 21

Produces testicular fluid

Answer 21

Sertoli

Question 22

Produces testosterone

Answer 22

Leydig cells

Question 23

Forms Dentin

Answer 23

Odontoblasts

Question 24

Produces glucagon

Answer 24

Alpha cells ( pancreatic)

Question 25

Produces insulin

Answer 25

Beta cells (pancreatic)

Question 26

Macrophage of the liver

Answer 26

Kupffer cells

Question 27

Macrophage of the nervous system

Answer 27

Microglial cells

Question 28

Which cell lines the lumen of the seminiferous tubules and secretes hormones, androgen binding proteins (ABPs) and other proteins that facilitates spermatogenesis?

Answer 28

Sertoli cells

Question 29

A dynamic, selectively permeable membrane enclosing the cytoplasm

Answer 29

Plasma membrane

Question 30

Protects the cell from changes in osmotic pressure

Answer 30

Cell wall

Question 31

What type of cell in dental papilla adjacent to the inner enamel epithelium differentiates into odontoblasts?

Answer 31

Mesenchymal cell

Question 32

Releases histamine, bradykinin and serotonin

Answer 32

Mast cells

Question 33

A chromosome is maximally condensed chromatin wrapped around a protein base of primarily:

Answer 33

Histones - positively charged basic proteins that carries high positively N-terminus

Question 34

Basic amino acids

Answer 34

Arginine Lysine Histidine

Question 35

Plasma cells are immediate derivations of which cell type?

Answer 35

B lymphocyte

Question 36

Produce cell-mediated immunity. Account 70-80% of circulating lymphocytes

Answer 36

T cells

Question 37

Produce antibody- mediated immunity. Account for 20-30%

Answer 37

B cells -mature once develop into PLASMA CELLS or become memory B cells.

Question 38

Responsible for the process translation, or taking the information from the DNA, encoding on RNA and using it to create the proteins needed by the cell

Answer 38

Ribosomes

Question 39

The cytoplasm of osteoblasts appears to be basophilic via normal H and E stain due to?

Answer 39

Presence of large amounts of rough endoplastic reticulum

Question 40

RNA and DNA can be distinguished from one another by the

Answer 40

Fuelgen reaction

Question 41

Chromosome condense and become visible, nuclear membrane breaks down, and the mitotic spindle apparatus forms at opposite poles of the cell

Answer 41

Prophase

Question 42

Chromosome align at the equatorial plate

Answer 42

Metaphase

Question 43

Centromeres divide. Sister chromatids separate and move toward the corresponding poles.

Answer 43

Anaphase

Question 44

Non- secretory cells that are known to have contractile properties in sweat glands and mammary glands. Located between secretory cells and their basement membrane.

Answer 44

Myoepithelial cells - derived from ectoderm