ABIO 121 1 List three of the rules for handling and using mi

ABIO 121

1) List three of the rules for handling and using microscopes from your lab manual.

a.

b.

c.

2) You can’t visually focus things that are close and far from you at the same time.

This effect also occurs in the microscope, but at a much smaller scale. What is the term that describes this phenomenon?

3) List three major differences between Prokaryotes and Eukaryotes?

a)

b)

c)

4) To make homemade yogurt, you add a small amount of yogurt to milk and then incubate it at a warm temperature. What is in the small amount of yogurt that can turn the rest of the milk into yogurt?

5) What is the relationship between photosynthetic bacteria and chloroplast?

6) Is a protozoan a prokaryote or eukaryote?

Solution

Answer:

3).

Prokaryotes

Eukaryotes

Do not have true nucleus

Possess ture nucleus

Lack of membrane bound cell organelles

Membrane boun organelles are present

70s ribosomes are present

80s ribosomes are present

DNA is circular, called nucleoid

DNA is linear, called chromosome

5). Chloroplast is an important organelle of plants by which plants can synthesize their own food material. The chloroplasts originated from a free-living bacterium, probably a cyanobacterium (photosynthetic bacteria), entering a eukaryotic cell. Hence, prokaryotes don\'t have them because the chloroplast endosymbiosis event was one way in which plants diverged from their non-plant ancestors.

6). Protozoa are eukaryote due presence of membrane bound organelles, like the nucleus, mitochondria, etc. in their cells. The prokaryotes do not have the membrane bound organelles