Understanding the concepts of cell biology.

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Reference no: EM1312474

1) The _____ packages and stores the hormone molecules.

A) ribosomes

B) Golgi apparatus

C) lysosome

D) Rough endoplasmic reticulum

E) Smooth endoplasmic reticulum

2) Out of the following which membrane transport process will continue on even though the cell may be alive or dead?

A) Sodium potassium pump

B) pinocytosis

C) phagocytosis

D) Diffusion

E) exocytosis

3) The fact that lipids move easily through cell membranes is because of

A) Their size.

B) Their chemical composition.

C) Osmosis.

D) Active transport.

4) Carrier molecules are needed for

A) Diffusion.

B) Osmosis.

C) Facilitated diffusion.

D) Active transport.

E) Both A and B are true.

5) When water enters the plant cell

A) It bursts.

B) The vacuole becomes enlarged.

C) The organelles are forced against the cell wall.

D) It undergoes plasmolysis.

E) Both B and C are true.

6) Red blood cells are isotonic to 0.9% NaCl solution.  A red blood cell will swell to bursting in which of following solutions?

A) 1.8% NaCl

B) 9.00% NaCl

C) 0.9% NaCl

D) 0.09% NaCl

7) Which type of pressure is responsible to maintain the erect position of a plant?

A) turgor pressure

B) Osmotic pressure

C) Diffusion pressure

D) Facilitated diffusion pressure

E) Negative pressure

8) Number of the mitochondria in a cell would be a general indicator of extent of

A) exocytosis.

B) Diffusion.

C) Osmosis.

D) Active transport.

E) Facilitated transport.

9) Cell replication comprises of:

A) DNA synthesis and DNA degradation.

B) endocytosis and exocytosis.

C) Mitosis and cytokinesis.

D) Cell growth and cell death.

E) Apoptosis and cytophagy.

10) At the time of interphase:

A) The cell is dead.

B) entromeres divide.

C) Two nuclei split.

D) Hereditary material duplicates itself.

E) The cell is at total rest.

 

Reference no: EM1312474

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