Prokaryotic And Eukaryotic Cells

2.

Which type of cell does not contain membrane-bound organelles?

Prokaryote
Eukaryote
Virus
None of them

Correct Answer

A. Prokaryote

Explanation

Prokaryotic cells, such as bacteria and archaea, do not have membrane-bound organelles. Their cellular structures, including the DNA, exist freely within the cytoplasm, and they lack a nucleus or other organelles like mitochondria and the endoplasmic reticulum. In contrast, eukaryotes (such as plants, animals, and fungi) have membrane-bound organelles, including a nucleus. Viruses are not considered cells; they are non-living entities that rely on host cells for reproduction and do not possess the cellular structure or organelles themselves. Therefore, the correct answer is prokaryote.

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3.

In a prokaryotic cell, the DNA is ___________.

Wrapped around histone proteins
Contained in the nucleus
Circular
Found in the nucleoid region
"free floating"

Correct Answer(s)

A. Circular
A. Found in the nucleoid region
A. "free floating"

Explanation

In a prokaryotic cell, the DNA is circular and found in the nucleoid region. Additionally, the DNA is "free floating" in the cytoplasm, meaning it is not contained within a membrane-bound nucleus like in eukaryotic cells. The circular shape of the DNA allows it to fit within the small size of prokaryotic cells. The nucleoid region is a concentrated area within the cytoplasm where the DNA is located, but it is not enclosed within a nucleus.

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27

4.

Which type of cell is likely the most recently evolved?

Eukaryote
Prokaryote
Both evolved at the same time
None of the above

Correct Answer

A. Eukaryote

Explanation

Eukaryotes are likely the most recently evolved type of cell because they are more complex and have a nucleus, which prokaryotes do not have. The evolution of eukaryotes is thought to have occurred through a process called endosymbiosis, where a prokaryotic cell engulfed another prokaryotic cell, leading to the development of organelles such as mitochondria and chloroplasts. This suggests that eukaryotes evolved after prokaryotes.

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20

5.

Which type of cell has ribosomes?

Prokaryote
Eukaryote
Both prokaryotes & eukaryotes
None of them

Correct Answer

A. Both prokaryotes & eukaryotes

Explanation

Both prokaryotes and eukaryotes have ribosomes. Ribosomes are responsible for protein synthesis, and they can be found in the cytoplasm of both types of cells. In prokaryotes, ribosomes are smaller and free-floating in the cytoplasm, while in eukaryotes, they can be found both free-floating and attached to the endoplasmic reticulum. This is why the correct answer is both prokaryotes and eukaryotes.

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11

6.

Which type of cell is considered to be the largest and most complex cell type?

Prokaryote
Eukaryote
Both are the same size and complexity

Correct Answer

A. Eukaryote

Explanation

Eukaryote is the correct answer because eukaryotic cells are generally larger and more complex than prokaryotic cells. Eukaryotic cells have a true nucleus and membrane-bound organelles, which allow for compartmentalization and specialization of cellular functions. Prokaryotic cells, on the other hand, lack a true nucleus and membrane-bound organelles, making them generally smaller and less complex. Therefore, eukaryotic cells are considered to be the largest and most complex cell type.

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14

7.

Which type of cell is always a single celled organism?

Prokaryote
Eukaryotes
Neither cell is single celled
None of the above
All of them

Correct Answer

A. Prokaryote

Explanation

Prokaryotes are always single-celled organisms because they lack a nucleus and other membrane-bound organelles. They are simple in structure and do not have the ability to form multicellular organisms. Eukaryotes, on the other hand, can be single-celled or multicellular organisms as they have a nucleus and other membrane-bound organelles. Therefore, the correct answer is prokaryote.

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21

8.

The DNA of a eukaryotic cell can be found in the _________.

Nucleoid region
Mitochondria
Nucleus
Cell membrane

Correct Answer

A. Nucleus

Explanation

The DNA of a eukaryotic cell can be found in the nucleus. The nucleus is a membrane-bound organelle that houses the cell's genetic material, including the DNA. It is responsible for controlling the cell's activities and is involved in processes such as gene expression and replication. The DNA in the nucleus is organized into chromosomes and contains the instructions for building and maintaining the cell and carrying out its functions.

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16

9.

Which type of cell contains a cell membrane?

Prokaryote
Eukaryote
Both cell types contain a cell membrane
None of the above

Correct Answer

A. Both cell types contain a cell membrane

Explanation

Both prokaryote and eukaryote cells contain a cell membrane. The cell membrane is a thin, flexible barrier that surrounds the cell and separates its internal environment from the external environment. It controls the movement of substances in and out of the cell, maintaining homeostasis and protecting the cell's internal components. Prokaryote cells, such as bacteria, have a simple cell structure and lack a nucleus, while eukaryote cells, found in plants, animals, fungi, and protists, have a more complex structure with a nucleus. However, regardless of their differences, both types of cells have a cell membrane.

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10.

Check all of the following statements that would be considered similarities between prokaryotic and eukaryotic cells.

Both have a nucleus
Both are large and complex
Both have cell membranes
Both have DNA
Both have Ribosomes
Both have many membrane-bound organelles inside of them
Both have a need for producing/using energy

Correct Answer(s)

A. Both have cell membranes
A. Both have DNA
A. Both have Ribosomes
A. Both have a need for producing/using energy

Explanation

The given correct answer suggests that the similarities between prokaryotic and eukaryotic cells include having cell membranes, DNA, ribosomes, and a need for producing/using energy. This means that both types of cells have a protective barrier surrounding them, genetic material for carrying instructions, structures responsible for protein synthesis, and a requirement for energy production and utilization.

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15

11.

Which of the following cells would classify as eukaryotic?

Animal cells
Plant cells
Bacteria
Fungi
Protists

Correct Answer(s)

A. Animal cells
A. Plant cells
A. Fungi
A. Protists

Explanation

Eukaryotic cells are characterized by having a true nucleus and membrane-bound organelles. Animal cells, plant cells, fungi, and protists all possess these features, making them eukaryotic. Bacteria, on the other hand, are prokaryotic cells that lack a nucleus and membrane-bound organelles. Therefore, the correct answer is animal cells, plant cells, fungi, and protists.

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38

12.

Which cell types have/can have cell walls?

Prokaryotes
Eukaryotes
Both prokaryotes and eukaryotes
None of the above

Correct Answer

A. Both prokaryotes and eukaryotes

Explanation

Both prokaryotes and eukaryotes can have cell walls. Prokaryotes, such as bacteria, have a cell wall made of peptidoglycan, which provides structural support and protection. On the other hand, eukaryotes, including plants, fungi, and some protists, also have cell walls. In plants, the cell wall is primarily composed of cellulose, while in fungi it is made of chitin. The cell wall in eukaryotes serves similar functions, providing rigidity, protection, and support to the cell. Therefore, both prokaryotes and eukaryotes can have cell walls.

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Prokaryotic And Eukaryotic Cells

Which type of cell has a nucleus?

Quiz Preview

Which type of cell does not contain membrane-bound organelles?

In a prokaryotic cell, the DNA is ___________.

Which type of cell is likely the most recently evolved?

Which type of cell has ribosomes?

Which type of cell is considered to be the largest and most complex cell type?

Which type of cell is always a single celled organism?

The DNA of a eukaryotic cell can be found in the _________.

Which type of cell contains a cell membrane?

Check all of the following statements that would be considered similarities between prokaryotic and eukaryotic cells.

Which of the following cells would classify as eukaryotic?

Which cell types have/can have cell walls?