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Arlecino [84]
3 years ago
15

You are given an unknown organism to identify. It is unicellular and heterotrophic. It is motile, using many short extensions of

the cytoplasm, each featuring the 9+2 filament pattern. It has well-developed organelles and two nuclei, one large and one small. This organism is most likely to be a member of which group
A) radiolarians
B) slime molds
C) ciliates
D) kinetoplastids
E) foraminiferans
Biology
2 answers:
Lilit [14]3 years ago
3 0

Answer: C) ciliates.

Explanation: Ciliates possess two different nuclei a diploid micronucleus which carry the germline of the cell. It also has a large, polyploid macronucleus which can be termed the vegetative nucleus, it takes care of general cell regulation, it expresses the phenotype of the organism. The macronucleus is generated from the micronucleus. The micronucleus passes the genetic material to offspring, but it does not express its genes. The macronucleus provides the small nuclear RNA for vegetative growth.

Alchen [17]3 years ago
3 0

Answer:

C-Ciliates

Explanation:

These are motile protozoan, with short, large number of  organs of locomotion called  Cilia. These cilia move up and down in various pattern in their  aquatic in habitat.

The two nuclei  are  the generative nucleus which is concerned with the  transmission of hereditary materials, and the larger Vegetative nucleus  that  coordinate    expression of the phenotype  traits and regulation of cell activities.

<u>The 9+2 filament pattern of the cilia  refers to the arrangement of the microtubules that  made up the cilia. Figure 9 refer to the cylindrical arrangement   of  9 fused miroctubles found at  the outer layer of Cilia, while the other 2 microtubules which are not fused ,  occupy  the center of the fused mircrotubules </u>. This represent fig 2. Therefore  outer 9 plus inner 2, gives 9+2 filament pattern. This arrangement makes cilia  to have different undulation.

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