Tag: organization of life

Quizzes (19) Questions (81)

Questions Related to organization of life

Multiple choice biology organization of life comparison of prokaryotic vs eukaryotic cells prokaryotic cell and eukaryotic cell types of cell

Which of the following features is common to prokaryotes and many eukaryotes?

  1. Chromatin material present

  2. Cell wall present

  3. Nuclear membrane present

  4. Membrane-bound subcellular organelles present
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Cell wall is found in bacteria (prokaryotes), fungi, algae and plants (eukaryotes). Bacterial cell walls are made up of peptidoglycan (murein). Algal cell walls are made up of gylcoproteins and polysaccharides. The cell walls of fungi are composed of chitin. Plant cell walls consists of a variety of polysaccharides, lipids, proteins etc. Prokaryotes lack nuclear membrane, and membrane bound subcellular organelles. Genetic material is naked and is called nucleoid.

So, the correct answer is 'Cell wall'.

Multiple choice biology organization of life comparison of prokaryotic vs eukaryotic cells prokaryotic cell and eukaryotic cell types of cell

The cell organelles are found in

  1. Bacterial cells

  2. Cyanobacterial cells

  3. Prokaryotic cells

  4. Eukaryotic cells
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Eukaryotic cells have a 'eu' or advanced nucleus having a well developed nuclear membrane, nucleolus and histone proteins for packaging of chromatin material. Eukaryotic cell also possesses several membrane bound organelles like plastids and mitochondria.

Multiple choice biology organization of life comparison of prokaryotic vs eukaryotic cells prokaryotic cell and eukaryotic cell types of cell

Plant cell differ from animal cell because of

  1. The presence of cell wall and absence of chlorophyll in plant cell.

  2. The presence of cell wall and chlorophyll in plant cell.

  3. The absence of cell wall and presence of chloroplast in animal cell.

  4. The absence of cell wall and presence of chlorophyll in plant cell.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Presence of a cellulosic cell wall is a characteristic feature of plant cell. The cell wall present in a plant cell is dead at maturity. Animal cells lack cellulosic cell wall. Plant cells have chlorophyll present inside cell organelles called plastids. Chlorophyll captures light energy which is used by plants in photosynthesis. Thus, plants are autotrophic. An animal cell lacks chlorophyll. Hence, animals are heterotrophic.

Multiple choice biology organization of life comparison of prokaryotic vs eukaryotic cells prokaryotic cell and eukaryotic cell types of cell

Transcription and translation occur in the cytoplasm in a/an

  1. Prokaryotic cell

  2. Eukaryotic cell

  3. Unicellular organism only

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Transcription is the process of formation of RNA from DNA. Transcription takes place inside the nucleus, where the DNA of a cell is stored. Since eukaryotes have a defined membrane bound nucleus, therefore transcription always takes place inside the nucleus in eukaryotic cells.
Translation, on the other hand is the process of production of proteins from messenger RNA. Production of proteins require ribosomes and ribosomes are found in cytoplasm. Thus, translation always occurs inside cytoplasm, whether it is a prokaryotic or eukaryotic cell.
In prokaryotes, however there is no define membrane bound nucleus. The DNA or the genetic material of prokaryotes lie inside cytoplasm only. Therefore, prokaryotic cells are the only cells where transcription and translation both occurs inside cytoplasm.
Hence, the correct option 'Prokaryotic cell'.

Multiple choice biology organization of life comparison of prokaryotic vs eukaryotic cells prokaryotic cell and eukaryotic cell types of cell

Which of these best distinguishes a prokaryotic cell from a eukaryotic cell?

  1. Prokaryotic cells have a cell wall, but eukaryotic cells never do

  2. Prokaryotic cells have flagella, but eukaryotic cells do not

  3. Prokaryotic cells do not have a membrane-bounded nucleus, but eukaryotic cells do have such nucleus

  4. Prokaryotic cells have ribosomes but eukaryotic cells do not have ribosomes
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The basic difference between eukaryotes and prokaryotes is the presence and absence of a nuclear membrane. The eukaryotic cells are considered true cells because they possess a nuclear membrane and prokaryotes are considered false cells as they lack it.

So, the correct answer is 'Prokaryotic cells do not have a membrane-bounded nucleus, but eukaryotic cells do have such nucleus'.

Multiple choice biology organization of life comparison of prokaryotic vs eukaryotic cells prokaryotic cell and eukaryotic cell types of cell

Give one key difference between eukaryotic cell and prokaryotic cell.

  1. <font color="#222222">Eukaryotes cells have a membrane-bound nucleus and prokaryote cell lacks a membrane-bound nucleus. </font>

  2. Eukaryotes cells do not have a membrane-bound nucleus and prokaryote cell have a membrane-bound nucleus.

  3. Both eukaryotes and prokaryotes cell have membrane bound nucleus.

  4. Both eukaryotes and prokaryotes cell do not have membrane bound nucleus.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Eukaryotes are organisms whose cells have a nucleus enclosed within membranes. A prokaryote is a unicellular organism that lacks a membrane-bound nucleus, mitochondria, or any other membrane-bound organelle.

So, the correct answer is ' Eukaryotes cells have a membrane-bound nucleus and prokaryote cell lacks a membrane-bound nucleus'.

Multiple choice biology organization of life comparison of prokaryotic vs eukaryotic cells prokaryotic cell and eukaryotic cell types of cell

Prokaryotes can be distinguished from eukaryotes as they lack

  1. RNA

  2. Ribosomes

  3. Gene discontinuity

  4. Unique DNA sequences
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Prokaryotic cells are the cells which lack organelles and other membrane-bound structure. They do not have a well-defined nucleus due to which gene discontinuity can be observed in the prokaryotic cell.
So the correct option is 'Gene discontinuity'.
Multiple choice biology organization of life comparison of prokaryotic vs eukaryotic cells prokaryotic cell and eukaryotic cell types of cell

Which of the following statement is incorrect about cell organelles ?

  1. Endoplasmic reticulum provides membranes to nuclear envelope after telophase

  2. Golgi apparatus present in both Prokaryotes as well as Eukaryotes

  3. Lysosomes acts as an intracellular scavenger by removing old or useless organelles in long-lived cells.

  4. Mitochondria have their own DNA which can replicate independently
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

  • Golgi apparatus is not present in Prokaryotes, because prokaryotic cells lack a nucleus and membrane-bound structures such as mitochondria, lysosomes, Golgi apparatus. while eukaryotic cells have a nucleus and membrane-bound structures.
So, the correct answer is 'Golgi apparatus is present in both prokaryotes as well as eukaryotes'

Multiple choice biology organization of life comparison of prokaryotic vs eukaryotic cells prokaryotic cell and eukaryotic cell types of cell

Differentiate between prokaryotic and eukaryotic cells.

  1. Prokaryotic- have no membrane bound organelles, eukaryotic- have no membrane bound organelles

  2. Prokaryotic- have no membrane bound organelles, eukaryotic- have membrane bound organelles

  3. Prokaryotic- have nucleoid, eukaryotic- have nucleus

  4. Both B and C
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Prokaryotes do not possess membrane-bound organelles and well-defined nucleus. Nucleoid is a region in a prokaryotic cell, where most of the genetic material resides. It is not a well-defined membrane-bound region. 
Eukaryotes possess a well-defined nucleus and membrane-bound organelles as mitochondria, Golgi complex, etc. Nucleus is bound with double membrane in eukaryotic cells in which most of the genetic material is present. 

Multiple choice biology organization of life comparison of prokaryotic vs eukaryotic cells prokaryotic cell and eukaryotic cell types of cell

Eukaryotic chromosome different from prokaryotic as these are made up of

  1. RNA

  2. DNA

  3. DNA and lipid

  4. DNA and histone
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Eukaryotic chromosomes are made of chromatin, a nucleoprotein - DNA coiled around histone proteins while prokaryotic chromosomes are circular chromosome attached to the inside of the cell membrane. They are single chromosome plus plasmids