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91.

Plasmalemma in animal cell is;

A.	Impermeabale	B.	Permeabe
C.	Semipermeable	D.	All of these qualities

92.

Plasma membrane is:

A.	Impermeable	B.	Made of cellulose
C.	Selective barrier	D.	None-selective barrier

93.

Ribosomes are several thusands to millions in a cell and have diameter of:

A.	1.0nm	B.	2.0nm
C.	23.0nm	D.	50.0nm

94.

Ribosomes were first observed by:

A.	Palade	B.	de Duve
C.	Rhodin	D.	None of these

95.

Chemically ribosomes are made up of:

A.	DNA + RNA	B.	DNA + Proteins
C.	RNA + proteins	D.	None of these

96.

Ribosomes in the animal cell are:

A.	Sites of protein synthesis	B.	Sites of oxidation
C.	Sites of phosphorylation	D.	None of these

97.

Which of the following is the best explanation for earlier discovery of nucleus that the cell theory:

A.	Nucleus is a more important structure than cytoplasm	B.	Robert Brown had a better magnification device
C.	Nuclei take darker stain than other parts of the cell	D.	Nucleus is visible body while cell is an abstract generalization

98.

Study of nucleus is termed:

A.	Karyology	B.	Histology
C.	Cytology	D.	Nucleology

99.

Present of an envelope over the nucleus or nuclear membrane was first demonstrated by:

A.	O. Hertwig	B.	Theodor Schwann
C.	Robert Brown	D.	None of these

100.

Nuclear membrane has pores a regular intervals for communication which have a diameter of:

A.	100 Angstrom	B.	200 Angstrom
C.	50 Angstrom	D.	10 Angstrom