1.A sample of very active tissue was examined and found to contain a large numbe

Question

1.A sample of very active tissue was examined and found to contain a large number of a particular organelle. These organelles were probably:_______

              a. Mitochondria

              b. Ribosomes

              c. Golgi bodies

              d. Lysosome

2.Which of the following membrane proteins is responsible for binding hormones that can switch on a cell?

              a. recognition proteins

              b. receptor proteins

              c. transport proteins

              d. adhesion proteins

3.In certain plant cells, a secondary wall is deposited __________.

              a. Inside the surface of the primary wall

              b. Outside the of the primary wall

              c. Both sides of the primary wall

4.Bacterial reproduce is through the mechanism of prokaryotic fission, which includes the steps of ____________________.

              a. The bacterial chromosome is attached to the plasma membrane

              b. DNA replication

              c. The DNA copy is attached at the plasma membrane near the attachment site of the parent DNA

              d. The two DNA molecules are moved apart by membrane growth

              e.New membrane and new wall material are added transversely

              f. all of above

5.Plasmids

              a. are self-reproducing circular molecules of DNA

              b. are sites for inserting genes for amplification

              c. may be transferred between different species of bacteria

              d. all of these

6.If a cell had its ribosome removed it would immediately be unable to:

              a. Synthesize proteins

              b. Undergo cell division

              c. Excrete its waste

              d. Metabolize food molecules

7.The smaller a cell:______

              a. the greater likelihood it is prokaryotic

              b. the more its mass will concentrate in the center

              c. the higher its surface to volume ration

              d. the greater likelihood it is an animal cell

8.Spherical bacteria are called

              a. bacillus

              b. spirillum

              c. coccus

              d. bacteriophages

              e. all of these

9.What bellow cell structure is found in plant cells but NOT in animal cells?

              a. nucleoplasm

              b. cell wall

              c. plasma membrane

              d. Golgi body

              e. microtubules

10.Mitochondria are noted for _______

              a. Containing digestive enzyme

              b. Producing ATP

              c. Photosynthesis

              d. Protein synthesis

Explanation / Answer

5. Plasmids are self-reproducing circular molecules of DNA.

8. Spherical bacteria are called coccus.

9. Cell wall is found in the plant cell but not in the animal cells.

10. Mitochondria are noted for producing ATP.

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