Histology Quiz 1

Tay-sachs disease happens because of:

Accumulation of glucose

Accumulation of ganglioside

Accumulation of glucocerebroside

Accumulation of sphibgomyelin.

which degrade unneeded or damaged proteins by proteolysis are protein complexes:

cytoplasmic

proteasome

nucleus

granulae

The magnification of EM is 120000 times ?

True

False

RNA is found within:

Nucleolus.

Ribosomes.

Mitochondria.

Only the nucleolus and ribosomes.

All of the listed.

- People who acquire hepatitis, get their liver cells injured, what will they take to initiate regeneration?

Calcitonin

interferons

Lepirudin

sermorelin

Regarding the peroxisomes, which of the following sentences is correct:

they are smaller than lysosomes and reach up to 1 micrometer

Under microscope, Peroxisomes are less homogenous in color than lysosomes.

they are involved in bile and cholesterol synthesis

they have the same function to lysosomes

Which of these enzymes helps in function of proteasome to complete proteolysis being?

E1 ubiquitin –activating enzyme

CDK

Pepsin

E2 ubiquitin – conjugating protein

Telophase in cell cycle in normal dividing cell is followed by

Interphase

Prophase

G1 phase

G2 phase

Cytokinesis

Which of the following is characteristics of Lysosome:

Acid phophatase enzyme.

Catalase.

Hydrolytic enzymes.

Respiratory enzymes.

All of the listed.

Regarding poly ribosomes, which of the following sentences is correct?

they are freely embedded in the cytoplasms

they are attached to the outer surface of RER

These synthesize proteins that are destined for local use by the cell itself.

they don’t synthesize any protein.

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