all dr.shehab Q&A histo nmu

which of the Following organelles is not enclosed with a membrane?

(ribosomes-mitochondria-lysosomes-golgi apparatus)

Ribosomes

Cell membrane with E.M. appears as …

Trilaminar

The most abundant molecules in the Cell membrane are ...

Phospholipids

What is the largest molecule in the Cell membrane?

Transmembrane Protein

which of the following Component of the Cell membrane acts as a Chamel?

Transmembrane Protein

Cell Cost (glyco Calyx) is formed of -

glycolipids & glycoproteins

which of the following enzymes is a marker of mitochondria?

Succinic dehydrogenase

Initial glycosylation of Proteins occurs in

rough endoplasmic reticulum (RER)

Final glycosylstion of Proteins occurs in

golgi apparatus

with H&E, the unstsined Area near the nucleus in a basophilic Cytoplasm

Golgi apparatus (negative gelgi image)

which of the following is a marker of lysosomes

acid Phosphatase enzyme

All of the following filament are 10 nm except

Actin filaments

which of the dna filaments Can Perform Contraction

Actin filaments

shaft of Cillia

how many microtubules?

20 microtubules

Flagella

how many microtubules?

20 microtubules

Centriole

how many microtubules?

27 microtubules

Basal body

how many microtubules?

27 microtubules

glycogen inclusions are specially stained by

Best's Carmine

lipid inclusions are specially Stained by

Sudan Black

Osmic acid

All of the following are Call inclusions except?

melanin

hemoglobin

lipofuscin

glycogen

action

actin

which of the following is a part of Cytoskeleton?

melanin

hemoglobin

lipofuscin

glycogen

actin

actin

Compare between the vesicular and the condensed nucleus

mention Components of nuclens with E.M.

1- nuclear membrane 2- nucleolus

3-nuclear Sap 4- Chromatin

Compare between the Euchromatin and the Heterochromatin

when the activity of the nucleus increases what happens to its components ?

Chromatin becomes invisible

Nuclear Pores increase

nuclear Sap increases

name 2 membranous organelles ?

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lysosomes and mitochondria

name 2 non membranous organelles

ribosomes and centrioles

mention the sites of actin filaments

skeletal muscle

microvilli

cell cortex

contractile rings

mention 3 types of cell inclusions

glycogen lipids and pigments

list 4 intermediate filaments

keratin vimentin desmin neuro

mention the components of the nucleus with em

nucleolus chromatin nuclear membrane and nuclear sap

The Chromosomes are ideal for Karyotyping in what phase

Metaphase

Chromosomal Content in G1 stage of interphase

46 S-chromosomes

Chromosomal Content in S stage of interphase

92 s-chromosome

Chromosomal Content in G2 stage of interphase

46 d-chromosome

Duplication of Centrioles occurs in

G2 stage of interphase

check Point of Prophase is

nucleolus disappears

The Karyotyle of Klinefelter's Syndrome

47,XXY

The Karyotyle of turner's Syndrome

45,XO

The Karyotyle of triple X Syndrome (Superfemale)

47,XXX

The Karyotyle of Down's syndrome in male

47,XY+21

The Karyotyle of Down's syndrome in female

47, XX +21

Partial deletion of short arm of the 4th Chromosome leads to ...

Wolf syndrome

Partial deletion of short arm of the 5th Chromosome leads to ....

Cri-Du-chat syndrome

Translocation of a piece of chromosome no. 22 to Chromosome no. will lead to ---

Philadelphia Chromosome

name 2 numerical chromosomal abnormalities

klienfilter and turner syndrome

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name 2 structural chromosomal abnormality

cri-du-chat and wolf syndromes

write the karyotype of

1-normal female

2-female down

3-klinefelter

4-turner

1-46,XX

2-47,XX+21

3-47,XXY

4-45,X0

epithelial tissue is charactrized by the following except

A closely aggregated cells

B little intercellular subs

C have basement membrane

D richly vascularized

it will be D

richly vascularized

what is the site of simple squamous epithelium

in blood vessels (aorta)

lung alveoli

single layer of flat cells with bulging nuclei is found in

blood vessels (aorta)

lung alveoli

simple cubiodal epithelium is found in

thyroid follicles

renal tubules

cube like cell with central and rounded nuclei is found in……

thyroid follicels

renal tubules

what is the site of simple columnar secrotory epithelium

stomach

what is the site of columnar absorptive

small intestine

what is the site of simple columnar ciliated

fallopian tube

pseudo stratified columnar ciliated epithelium found in

trachea & bronchi

pseudo stratified columnar non ciliated epithelium found in ……

large ducts of glands

stratified squamous non-keratinized epithelium found in ?

mouth cavity

esophagus

stratified squamous kratinized epithelium is found in ….

epidermis of the skin

large top umbrella cells are found in …..

stratified transitional epithelium

enumerate types of simple epithelium

1-simple squamous epithelium

2-simple cuboidal epithelium

3- simple columnar epithelium

4-pseudo stratified columnar epithelium

with cells secrete pure mucus

goblet cells

witch cells secrete a pure serous

parotid gland

which gland secret both mucus & serus

submandibular gland

when the apical part of the cell is damaged during the process of secretion , the cell is termed

apocrine gland

when the whole cell is damaged during the process of secretion the cell is termed

holocrine gland

which junctions is concerned with communications between cells

gap junction

a junction witch have a space of about 2 nm in diameter

gap junction

classify glands according to the mode of secretion

1- merocrine gland

2- apocrine gland

3- holocrine gland

enumerate cells of neuroepithelium

1- sensory cells

2- supporting cells

3- basal cells

What's the most common connective tissue cell

Fibroblast

Which cell synthesis collagen and elastin

Fibroblast

Signet ring shaped cells is character for…………

Unilocular Adipocyte (white)

Unilocular Adipocyte C.T it's special stain is ……

Sudan black

Which cell contain small sized lipid droplet and numerous mitochondria

Multilocular Adipocyte (brown)

Which cell arise from monocytes

Macrophage (Histiocytes)

Which cell contain numerous lysosomes

Macrophage (histiocytes)

Which cell stained by vital stain

Macrophage

Mast cell special stain is

Toluidine blue

What colour mast cell give by toluidine blue

Red or purple

Which cell synthesis heparin and histamine

Mast cell

Clock face appearance of the nucleus is character of

Plasma cell

Which cell synthesis the Antibodies

Plasma cell

Collagen fibers are specially stained by

Mallory trichrome stain

Type 1 collagen is found in

Tendon

Dermis of the skin

Which type of collagen is found in cartilage

Type 2

Which type of C.T. fibers forms stroma of parenchmatus organ

Reticular fiber

Reticular fibers Staind by

Silver stain

Elastic fibers stained by

Ver hoef’s stain

Which of the following is not a C.T Proper type

Loose

Dense

cartilage

Reticular

Adipose

Catilage

What is the most common C.T. Proper type

Loose C.T

Jelly like ground substance rich in hyaluronic acid

Mucoid C.T

mucoid C.T. is found in?

umbilical cord

Dense irregular collagenous example

Dermis of the skin

Mucoid present in

Umbilical cord

Dense regular collagenous in

Tendon

Dense regular elastic in

Aorta

Unilocular Adipose tissue is present in

Subcutaneous adipose tissue

name 2 free connective tissue cells

mast cells,plasma cells

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