What is the best description of a protozoan? multi-cellular prokaryote multi-cel

Question

What is the best description of a protozoan? multi-cellular prokaryote multi-cellular eukaryote single-celled prokaryote single-celled eukaryote none of these T/F. All prokaryotes arc single-celled. True False Which of the following is NOT a characteristic of prokaryotes? much smaller than eukaryotes lack membrane-bound organelles lack a cell wall lack a nucleus reproduce asexually T/F. All of life is now classified into three Domains: Bacteria. Archaea. and Eukarya; the five-kingdom system. Animalia. Fungi. Plantae. Protista and Monera is now obsolete. True False T/F. Bacteria are prokaryotes. True False T/F. Prokaryotes lack organelles. True False Algae, fungi, protozoa, animals and plants are all examples of archaeans. prokaryotes, parasites. eukaryotes. none of these T/F. Prokaryotes and eukaryotes both have flagella. True False A capsule and slime layer arc two types of fimbriae, glycocalyx. pili. plasma membrane. A characteristic shared by both the capsule and the

Explanation / Answer

1. ANS: D. A single cell eukaryote

Explanation: Protozoans are single-celled microscopic animal group comes under of the kingdom Protista.

Ex: Amoeba, flagellate and ciliate.

2. ANS: True.

Explanation: All prokaryotes are single-celled organisms.

3. ANS: B. Lack membrane-bound organelles

Explanation: Prokaryotic cells lack membrane-bound organelles, and eukaryotic cells only contain membrane-bound organelles.

4. ANS: False

Explanation: All of the life is now classified into five kingdom classification. Monera group is now included with Eubacteria and Archeobacteria.

5. ANS: True.

Explanation: Bacteria are unicellular organisms with very simple cell structure lacking proper nucleus and membrane bound organelles, so they are called prokaryotic.

6. ANS: True.

Explanation: prokaryotes lack proper nucleus and membrane bound organelles,

7. ANS: D. eukaryotes

Explanation: Among these the genetic material is DNA, contained within a distinct nucleus. Eukaryotes include all living organisms other than the eubacteria and archaea.

8. ANS: True.

Explanation: eukaryote and prokaryote both have flagella. In prokaryote it is small and single standard. In eukaryotes it is present in large size and contains 11 standards.

9. ANS: B. Gylcocalx

Explanation: a capsule and slime layers are 2 types of Gylcocalx

10. ANS:

Slime layers:

It is a glycocalyx made with a glycol protein, and it loosely associated with the cell wall. It bacteria protected from dehydration and loss of nutrients.

Capsule:

It is a glycocalyx made by polysaccharides are more firmly attached to the cell wall. It have a gummy, sticky consistency and provide protection against phagocytic white blood cells

Ex: Plaque on teeth protect bacteria

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